Discussion Session

Program of the 148th ISIJ Meeting (September 28-30, 2004)
Discussion Session Only

Current Advance in Materials and Process, Vol.17, No.4

High Temperature Processes

September 28. Room5
Pysical property data of molten slags and fluxes

09:10∼9:35
1	Viscosity of CaO-SiO2-Al₂O₃-(R2O,RO) slags N.Saito	… 542
9:35∼10:00
2	Evaluation of viscosity of molten slag based on Adam-Gibbs model T.Miki	… 545
10:00∼10:25
3	Discussion on the surface tension of molten ionic mixtures and molten slag T.Tanaka	… 549
10:25∼10:50
4	Application of square wave pulse heating method to thermal properties measurement of CaO-SiO₂ system fluxes K.Nishioka	… 553
10:50∼11:15 (ISIJ Research Promotion Grant)
5	Prediction equation for refractive indices of molten silicate slags M.Susa	… 557
11:15∼11:40
6	Measurement of thermal conductivity for molten silicates at high temperatures by means of a novel laser flash technique H.Shibata	… 561

September 28. Room6
Fundamental research and technological development for the sintering process with high productivity and suitable properties using iron ores having low quality(Final report of the research project on "porous meso-mosaic texture sinter")

9:20∼9:50 (Invited Lecture)
7	Evaluation of mineralogical properties of Marra mamba ore J.Okazaki	… 562
10:00∼10:25
8	Effect of moisture content and wettability on granulation property of iron ore T.Maeda	… 566
10:25∼10:50
9	Simulation for granulation of iron ores by using DEM J.Kano	… 570
11:10∼11:35
10	Effect of Al2O3 and MgO addition on melting behavior of sintering F.Tsukihashi	… 574
11:35∼12:00
11	Properties of core ore required for sinter mixture under using a large amount of limonitic ores T.Otomo	… 578
13:00∼13:30
12	Formation process of void structure in sintering bed and approach to its control E.Kasai	… 582
13:30∼14:00
13	The sintering behavior of raw material bed placed large particles C.Kamijo	… 586
14:10∼14:35
14	Influence of slag components and pore blockade accompanied with melt formation on reducibility of iron oxide including CaO-SiO₂-FexO slag H.O.Nakazato	… 590
14:35∼15:00
15	Structure of the calcium ferrite phase(SFCAM) K.Sugiyama	… 594
15:20∼15:45
16	Strength and stiffness analysis of sinter ore with consideration of its textures T.Aizawa	… 598
15:45∼16:10
17	Evaluation of local strain distribution in iron oxides by EBSP T.Miki	… 602
16:10∼16:40
18	Discussion of mesomosaic enbedding process for iron ore sintering T.Kawaguchi	… 606

September 29. Room3
Cokemaking technology to support low RAR, high productivity blast furnace operation

10:00∼10:35 (Keynote Lecture)
19	Desirable coke properties for blast furnace in future T.Ariyama	… 610
10:35∼11:10
20	Mechanical strength of coke for ironmaking M.Sakai	… 614
11:10∼11:45
21	Evaluation of coke strength by hardness measurement K.Uebo	… 618
13:00∼13:35
22	Breakage behavior of coke during drum test and effect of coke pore structure on coke strength and CSR K.Matsudaira	… 622
13:35∼14:10
23	Effect of coke pore structure on coke reactivity and strength before/after CO₂ reaction T.Yamamoto	… 626
14:10∼14:45
24	Textures and distribution of ash on the reactivity of coke aiming at the low reducing agent rate Y.Kashiwaya	… 630
15:00∼15:35
25	Gasification reactivity of coke, wood charcoal and graphite and their pore structure M.Kawakami	… 634
15:35∼16:10
26	Production technology of high strength and high reactivity coke S.Nomura	… 638

September 29. Room6
Innovative development of refining processes in steelmaking by heterogeneous fluxes

9:10∼9:50
27	Improvement of pre-treatment process of pig iron and efficiency for dephosphorization in Nippon Steel K.Miyamoto	… 642
9:50∼10:30
28	The reaction of solid phase with molten slag in hot-metal dephosphorization K.Fujita	… 646
10:40∼11:20
29	Effects of temperature and flux composition on rate of hot metal dephosphorization N.Kikuchi	… 649
11:20∼12:00
30	Novel refining process using capillary phenomena of solid CaO Joonho Lee	… 653
13:00∼13:40
31	Hot metal dephosphorization behavior by sintered dephosphorization agent containing Al₂O₃ M.Ishikawa	… 655
13:40∼14:20
32	Solid-state reaction kinetics of the system CaO-FeO H.Fukuyama	… 658
14:30∼15:10
33	Mechanism of hot metal dephosphorization in torpedo car by BOF slag T.Mimura	… 662
15:10∼15:50
34	Reduction of steelmaking slag volume with heterogeneous fluxes M.Iwase	… 666

Current Advance in Materials and Process, Vol.17, No.5

Instrumentation,Contorol and System Engineering

September 30. Room8
Recent researches and developments for internal and sub-surface defect inspection

10:00∼10:30

35 High-speed 3D ultrasound inspection
Y.Tamura … 930

10:30∼11:00

36 Signal processing techniques for high-precision ultrasonic flaw detection
K.Nishi … 934

11:00∼11:30

37 Ultrasonic propagation analysis in consideration of grain boundary scattering by the explicit finite element method
T.Ito … 938

11:30∼12:00

38 Scattering analysis for quantitative evaluation of ultrasonic noise
S.Hirose … 942

13:00∼13:30

39 Responses of Dahle-type probe to flaws in the conductive material
I.Sasada … 945

13:30∼14:00

40 Lock-in magneto-optic imaging and analysis for detecting surface and internal flaws of steel
S.Ando … 948

14:00∼14:30

41 Modeling of detecting signal and magnetic noise on magnetized eddy current testing of rolling thin steel plat
M.Hashimoto … 952

Creating New Products and Qualities

September 28. Room9
Structure and property controlled by casting process and/or forging process

13:05∼13:35

42 Microstructure control and utilization of forging for grain refinement in steel
K.Tsuzaki … 972

13:35∼14:05

43 Metallurgical technology in microalloyed forgings for automotive parts
I.Nomura … 976

14:05∼14:35 (Invited Lecture)

44 Hardening technology of steel by die quenching and application to body parts
K.Nakashima … 980

14:35∼15:05 (Invited Lecture)

45 Micro structure and characteristic on the cast iron parts of the car
S.Mizuno … 984

15:05∼15:35 (Invited Lecture)

46 Examples on microstructure and characteristic of cast steel pipes by centrifugal casting process
T.Kimura … 988

15:35∼16:05

47 Characteristics and control of structure obtained by semi-solid processing
H.Nomura … 992

September 29. Room9
Current temper rolling technologies for mild steel sheet

13:05∼13:30

48 Analysis of Luders bands in temper rolling by the continuum theory of dislocations
K.Komori … 996

13:30∼13:55

49 Finite element simulation of temper rolling of steel strips(Effect of yield-point phenomena on non-uniform plastic deformation)
F.Yoshida … 997

13:55∼14:20

50 Stress and strain analysis in temper rolling for mild steel sheet by elastic-plastic finite element method
I.Yarita … 1001

14:20∼14:45

51 Effect of rolling condition on skin-pass rolling characteristics
T.Shiraishi … 1005

14:55∼15:20

52 Elasto-Plastic FE analysis of temper rolling approximated by multiple punch indentation
H.Ike … 1009

15:20∼15:45

53 Effect of roughness of roll surface on the strip surface
M.Ataka … 1011

15:45∼16:10

54 Effect of the skinpass rolling lubricant on friction and roll surface transcription
N.Nagase … 1015

16:10∼16:35

55 Cross buckle and longitudinal buckle in temper rolling of ultra thin strips
H.Kijima … 1019

Current Advance in Materials and Process, Vol.17, No.6

Microstructure and Properties of Materials

September 28. Room14
Recent progress and further study of antimicrobial metal materials for biohazard or bio-corrosion

09:35∼10:15 (Invited Lecture)

56 For the understanding of biofilms
H.Morisaki … 1088

10:15∼10:55 (Invited Lecture)

57 Sterilization of bacteria in the biofilm and resuscitation of damaged cell
Y.Tanji … 1092

10:55∼11:15 (Invited Lecture)

58 Microbial consortia analysis to elucidate biocorrosion mechanism
K.Ito … 1095

11:15∼11:35 (Invited Lecture)

59 Adhesion of saccharomyces cerevisiae to solid surfaces and its removal by cleaning
S.Fukuzaki … 1097

11:35∼11:55

60 Effect of the factor of inducing biocorrosion in the laboratory simulation test
Y.Miyano … 1101

13:00∼13:40 (Invited Lecture)

61 Antimicrobial material
H.Kourai … 1105

13:40∼14:00 (Invited Lecture)

62 Antimicrobiability of composite sinter materials containing photocatalyst and non-photocatalyst
T.Satoh … 1109

14:00∼14:20

63 Antimicrobiability of press formed or mechanical polished products of stainless steel containing Cu
S.Suzuki … 1113

14:20∼14:40

64 Antibacterial property of silver dispersed stainless steel
M.Okihashi … 1117

14:40∼15:00 (Invited Lecture)

65 Food preservation in the materials containing silver
Y.Imada … 1120

15:20∼15:40

66 Antibacterial evaluation of silver or copper contained stainless steels in the equal environment
S.Asano … 1123

15:40∼16:00

67 Antibacterial effect of the plating metals to some bacteria
H.Kanematsu … 1125

16:00∼16:20

68 Antifungal effect of some plating metals
H.Kanematsu … 1127

16:20∼16:40

69 Antimicrobial treatment of aluminum by anodic oxidation
M.Yuguchi … 1129

September 28. Room17
Trend and development of new galvanized steels

13:05∼13:55 (Invited Lecture)

70 Anti-corrosion specification of automobiles
H.Itoh … 1132

13:55∼14:45 (Invited Lecture)

71 "Housing quality assurance law" and durability evaluation of steel material
N.Ikeda … 1133

14:45∼15:35 (Invited Lecture)

72 Corrosion aspect of electric appliances and the development of a new accelerated corrosion test
K.Fujii … 1136

15:45∼16:10

73 Corrosion monitoring of galvanized steel under simulated marine atmospheric environment and the degradation mechanism
A.Nishikata … 1140

16:10∼16:35

74 Atmospheric corrosion behavior of Zn and Zn-Al coated steel
H.Katayama … 1142

16:35∼17:00

75 Effects of environment factors on atmospheric corrosion behavior of zinc
T.Shinohara … 1143

September 29. Room17
Trend and development of new galvanized steels

10:00∼10:25 (Keynote Lecture)

76 Corrosion of Zn-5mass%Al alloy coated steel sheets in aqueous solutions
H.Hagi … 1147

10:25∼10:50

77 Initial stage of localized corrosion on zinc alloy coated steels by photon rupture method
M.Sakairi … 1148

10:50∼11:15

78 Corrosion pruducts of zinc coating layer in the presence of NaCl precipitates under atmospheric environments
T.Ohtsuka … 1149

11:15∼11:40

79 Electrochemical behaviour of corrosion products on alloyed Zn plating
S.Fujimoto … 1153

13:00∼13:25

80 Corrosion resistance and electrochemical properties of ZnO thin films formed by ion-beam-sputter deposition
N.Hara … 1155

13:25∼13:50

81 Influence of alloying metals on the formation of artificial zinc rusts
T.Ishikawa … 1156

13:50∼14:15

82 Stability of corrosion products from galvanized steels in the presence of atmospheric carbon dioxide
H.Tamura … 1160

14:15∼14:40

83 Corrosion inhibition of galvanized steels by simulated corrosion products of zinc alloys
T.Tsuru … 1162

14:50∼15:15

84 Development of new prepainted galvannealed steel sheet for automotive industry
H.Shige … 1165

15:15∼15:40

85 Extraordinary corrosion near shear cut edge of Al-Zn alloy coated steel sheet in salt spray test
M.Matsumoto … 1169

15:40∼16:05

86 Atmospheric corrosion behavior of hot-dip Zn-6%Al-3%Mg alloy coated steel sheets
T.Shimizu … 1172

September 29. Room18
Availability of nitrogen on improvement in steel properties

09:25-09:50

87 Properties of iron nitrides in Fe-N alloys
M.Sakamoto … 1176

09:50-10:15

88 Martensitic transformation of high nitrogen austenite induced by external magnetic field
T.Koyano … 1179

10:15-10:40

89 Effect of nitrogen alloying on improvement in corrosion resistance of stainless steels in seawater
N.Washizu … 1182

10:45-11:10

90 Evaluation of corrosion resistance for the high nitrogen steel specimens distributed from EU by ESCA
K.Ichii … 1184

11:10-11:35

91 Formability of high strength-, high corrosion resistant high nitrogen steels
Y.Katada … 1187

11:35-12:00

92 Grain size control of high nitrogen austenitic steel fabricated by nitrogen absorption into solid solution
T.Tsuchiyama … 1191

13:00-13:25

93 Discussion on deformation properties in high nitrogen austenitic steels by using neutron scattering
K.Ikeda … 1194

13:25-13:50

94 Surface modification of steel by radical nitriding
H.Takeda … 1198

13:50-14:15

95 Heat affected zone fracture toughness and microstructure in high nitrogen stainless steel
M.Irie … 1201

14:15-14:40

96 Microstructure of a friction stir weld of 0.5% nitrogen stainless steel
Seung Hwan C.Park … 1203

Process Evaluation and Material Characterization

September 28. Room19
Surface and interface properties and characterizations of materials

13:00∼13:30 (Invited Lecture)

97 Studies on the generation process of galvannealed coatings
M.Sakurai … 1430

13:30∼14:00 (Invited Lecture)

98 Analysis of surfaces and interfaces using transmission electron microscopy
H.Saka … 1434

14:00∼14:30

99 In-situ analysis of galvannealing process of GA steel sheet by synchrotron radiation
A.Taniyama … 1438

14:30∼15:00

100 Microstructural characterization of surface modified P-added steel for galvannealing
K.Sato … 1442

15:10∼15:40 (Invited Lecture)

101 Observation of reactions at surfaces/interfaces using synchrotron radiation
M.Kimura … 1446

15:40∼16:10

102 International standardization of glow discharge optical emission spectrometry for surface analysis
K.Kakita … 1450

16:10∼16:40 (ISIJ Research Promotion Grant)

103 Improvement in information resolution for depth profiling by using pulsed discharge mode in DC/RF glow discharge optical emission spectrometry
K.Wagatsuma … 1454

September 30. Room19
Development of new on-site analytical techneques for steel-making

10:00-10:30 (Invited Lecture)

104 Future subject on steelmaking technology and chemical analysis
Y.Kishimoto … 1458

10:30-11:00 (Invited Lecture)

105 Recycling of steel and removal of tramp elements
F.Tsukihashi … 1460

11:00-11:30

106 Abstract and development of iron and steel rapid analysis
K.Mizukami … 1464

11:30-12:00

107 Development of pre-treatment procedure for the determination of trace amounts of oxygen in steel
H.Yasuhara … 1466

13:00∼13:30

108 Determination of zinc in steel samples by ETV-ICP-AES
Y.Okamoto … 1470

13:30∼14:00

109 Direct determination of trace levels of lead in iron and steel samples by graphite furnace atomic absorption spectrometry using a solid sampling technique
E.Yamagishi … 1474

14:00∼14:30

110 Application of the bias-current controlled R.F. glow discharge optical emission spectrometry
N.Yamashita … 1475

14:30∼15:00

111 Excitation mechanism for emission lines excited by radio frequency glow discharge plasma associated with bias current introduction
K.Kodama … 1477

15:00∼15:30

112 Development of helium glow-discharge optical emission spectrometry aiming at rapid analysis of trace gas components in iron and steel
H.Matsuta … 1480

10:00∼10:30
35	High-speed 3D ultrasound inspection Y.Tamura	… 930
10:30∼11:00
36	Signal processing techniques for high-precision ultrasonic flaw detection K.Nishi	… 934
11:00∼11:30
37	Ultrasonic propagation analysis in consideration of grain boundary scattering by the explicit finite element method T.Ito	… 938
11:30∼12:00
38	Scattering analysis for quantitative evaluation of ultrasonic noise S.Hirose	… 942
13:00∼13:30
39	Responses of Dahle-type probe to flaws in the conductive material I.Sasada	… 945
13:30∼14:00
40	Lock-in magneto-optic imaging and analysis for detecting surface and internal flaws of steel S.Ando	… 948
14:00∼14:30
41	Modeling of detecting signal and magnetic noise on magnetized eddy current testing of rolling thin steel plat M.Hashimoto	… 952

13:05∼13:35
42	Microstructure control and utilization of forging for grain refinement in steel K.Tsuzaki	… 972
13:35∼14:05
43	Metallurgical technology in microalloyed forgings for automotive parts I.Nomura	… 976
14:05∼14:35 (Invited Lecture)
44	Hardening technology of steel by die quenching and application to body parts K.Nakashima	… 980
14:35∼15:05 (Invited Lecture)
45	Micro structure and characteristic on the cast iron parts of the car S.Mizuno	… 984
15:05∼15:35 (Invited Lecture)
46	Examples on microstructure and characteristic of cast steel pipes by centrifugal casting process T.Kimura	… 988
15:35∼16:05
47	Characteristics and control of structure obtained by semi-solid processing H.Nomura	… 992

13:05∼13:30
48	Analysis of Luders bands in temper rolling by the continuum theory of dislocations K.Komori	… 996
13:30∼13:55
49	Finite element simulation of temper rolling of steel strips(Effect of yield-point phenomena on non-uniform plastic deformation) F.Yoshida	… 997
13:55∼14:20
50	Stress and strain analysis in temper rolling for mild steel sheet by elastic-plastic finite element method I.Yarita	… 1001
14:20∼14:45
51	Effect of rolling condition on skin-pass rolling characteristics T.Shiraishi	… 1005
14:55∼15:20
52	Elasto-Plastic FE analysis of temper rolling approximated by multiple punch indentation H.Ike	… 1009
15:20∼15:45
53	Effect of roughness of roll surface on the strip surface M.Ataka	… 1011
15:45∼16:10
54	Effect of the skinpass rolling lubricant on friction and roll surface transcription N.Nagase	… 1015
16:10∼16:35
55	Cross buckle and longitudinal buckle in temper rolling of ultra thin strips H.Kijima	… 1019

09:35∼10:15 (Invited Lecture)
56	For the understanding of biofilms H.Morisaki	… 1088
10:15∼10:55 (Invited Lecture)
57	Sterilization of bacteria in the biofilm and resuscitation of damaged cell Y.Tanji	… 1092
10:55∼11:15 (Invited Lecture)
58	Microbial consortia analysis to elucidate biocorrosion mechanism K.Ito	… 1095
11:15∼11:35 (Invited Lecture)
59	Adhesion of saccharomyces cerevisiae to solid surfaces and its removal by cleaning S.Fukuzaki	… 1097
11:35∼11:55
60	Effect of the factor of inducing biocorrosion in the laboratory simulation test Y.Miyano	… 1101
13:00∼13:40 (Invited Lecture)
61	Antimicrobial material H.Kourai	… 1105
13:40∼14:00 (Invited Lecture)
62	Antimicrobiability of composite sinter materials containing photocatalyst and non-photocatalyst T.Satoh	… 1109
14:00∼14:20
63	Antimicrobiability of press formed or mechanical polished products of stainless steel containing Cu S.Suzuki	… 1113
14:20∼14:40
64	Antibacterial property of silver dispersed stainless steel M.Okihashi	… 1117
14:40∼15:00 (Invited Lecture)
65	Food preservation in the materials containing silver Y.Imada	… 1120
15:20∼15:40
66	Antibacterial evaluation of silver or copper contained stainless steels in the equal environment S.Asano	… 1123
15:40∼16:00
67	Antibacterial effect of the plating metals to some bacteria H.Kanematsu	… 1125
16:00∼16:20
68	Antifungal effect of some plating metals H.Kanematsu	… 1127
16:20∼16:40
69	Antimicrobial treatment of aluminum by anodic oxidation M.Yuguchi	… 1129

13:05∼13:55 (Invited Lecture)
70	Anti-corrosion specification of automobiles H.Itoh	… 1132
13:55∼14:45 (Invited Lecture)
71	"Housing quality assurance law" and durability evaluation of steel material N.Ikeda	… 1133
14:45∼15:35 (Invited Lecture)
72	Corrosion aspect of electric appliances and the development of a new accelerated corrosion test K.Fujii	… 1136
15:45∼16:10
73	Corrosion monitoring of galvanized steel under simulated marine atmospheric environment and the degradation mechanism A.Nishikata	… 1140
16:10∼16:35
74	Atmospheric corrosion behavior of Zn and Zn-Al coated steel H.Katayama	… 1142
16:35∼17:00
75	Effects of environment factors on atmospheric corrosion behavior of zinc T.Shinohara	… 1143

10:00∼10:25 (Keynote Lecture)
76	Corrosion of Zn-5mass%Al alloy coated steel sheets in aqueous solutions H.Hagi	… 1147
10:25∼10:50
77	Initial stage of localized corrosion on zinc alloy coated steels by photon rupture method M.Sakairi	… 1148
10:50∼11:15
78	Corrosion pruducts of zinc coating layer in the presence of NaCl precipitates under atmospheric environments T.Ohtsuka	… 1149
11:15∼11:40
79	Electrochemical behaviour of corrosion products on alloyed Zn plating S.Fujimoto	… 1153
13:00∼13:25
80	Corrosion resistance and electrochemical properties of ZnO thin films formed by ion-beam-sputter deposition N.Hara	… 1155
13:25∼13:50
81	Influence of alloying metals on the formation of artificial zinc rusts T.Ishikawa	… 1156
13:50∼14:15
82	Stability of corrosion products from galvanized steels in the presence of atmospheric carbon dioxide H.Tamura	… 1160
14:15∼14:40
83	Corrosion inhibition of galvanized steels by simulated corrosion products of zinc alloys T.Tsuru	… 1162
14:50∼15:15
84	Development of new prepainted galvannealed steel sheet for automotive industry H.Shige	… 1165
15:15∼15:40
85	Extraordinary corrosion near shear cut edge of Al-Zn alloy coated steel sheet in salt spray test M.Matsumoto	… 1169
15:40∼16:05
86	Atmospheric corrosion behavior of hot-dip Zn-6%Al-3%Mg alloy coated steel sheets T.Shimizu	… 1172

09:25-09:50
87	Properties of iron nitrides in Fe-N alloys M.Sakamoto	… 1176
09:50-10:15
88	Martensitic transformation of high nitrogen austenite induced by external magnetic field T.Koyano	… 1179
10:15-10:40
89	Effect of nitrogen alloying on improvement in corrosion resistance of stainless steels in seawater N.Washizu	… 1182
10:45-11:10
90	Evaluation of corrosion resistance for the high nitrogen steel specimens distributed from EU by ESCA K.Ichii	… 1184
11:10-11:35
91	Formability of high strength-, high corrosion resistant high nitrogen steels Y.Katada	… 1187
11:35-12:00
92	Grain size control of high nitrogen austenitic steel fabricated by nitrogen absorption into solid solution T.Tsuchiyama	… 1191
13:00-13:25
93	Discussion on deformation properties in high nitrogen austenitic steels by using neutron scattering K.Ikeda	… 1194
13:25-13:50
94	Surface modification of steel by radical nitriding H.Takeda	… 1198
13:50-14:15
95	Heat affected zone fracture toughness and microstructure in high nitrogen stainless steel M.Irie	… 1201
14:15-14:40
96	Microstructure of a friction stir weld of 0.5% nitrogen stainless steel Seung Hwan C.Park	… 1203

13:00∼13:30 (Invited Lecture)
97	Studies on the generation process of galvannealed coatings M.Sakurai	… 1430
13:30∼14:00 (Invited Lecture)
98	Analysis of surfaces and interfaces using transmission electron microscopy H.Saka	… 1434
14:00∼14:30
99	In-situ analysis of galvannealing process of GA steel sheet by synchrotron radiation A.Taniyama	… 1438
14:30∼15:00
100	Microstructural characterization of surface modified P-added steel for galvannealing K.Sato	… 1442
15:10∼15:40 (Invited Lecture)
101	Observation of reactions at surfaces/interfaces using synchrotron radiation M.Kimura	… 1446
15:40∼16:10
102	International standardization of glow discharge optical emission spectrometry for surface analysis K.Kakita	… 1450
16:10∼16:40 (ISIJ Research Promotion Grant)
103	Improvement in information resolution for depth profiling by using pulsed discharge mode in DC/RF glow discharge optical emission spectrometry K.Wagatsuma	… 1454

10:00-10:30 (Invited Lecture)
104	Future subject on steelmaking technology and chemical analysis Y.Kishimoto	… 1458
10:30-11:00 (Invited Lecture)
105	Recycling of steel and removal of tramp elements F.Tsukihashi	… 1460
11:00-11:30
106	Abstract and development of iron and steel rapid analysis K.Mizukami	… 1464
11:30-12:00
107	Development of pre-treatment procedure for the determination of trace amounts of oxygen in steel H.Yasuhara	… 1466
13:00∼13:30
108	Determination of zinc in steel samples by ETV-ICP-AES Y.Okamoto	… 1470
13:30∼14:00
109	Direct determination of trace levels of lead in iron and steel samples by graphite furnace atomic absorption spectrometry using a solid sampling technique E.Yamagishi	… 1474
14:00∼14:30
110	Application of the bias-current controlled R.F. glow discharge optical emission spectrometry N.Yamashita	… 1475
14:30∼15:00
111	Excitation mechanism for emission lines excited by radio frequency glow discharge plasma associated with bias current introduction K.Kodama	… 1477
15:00∼15:30
112	Development of helium glow-discharge optical emission spectrometry aiming at rapid analysis of trace gas components in iron and steel H.Matsuta	… 1480