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1. (WO2007004671) HOT-DIP Sn-Zn SYSTEM COATED STEEL SHEET HAVING GOOD CORROSION RESISTANCE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/004671 International Application No.: PCT/JP2006/313394
Publication Date: 11.01.2007 International Filing Date: 05.07.2006
IPC:
C23C 2/08 (2006.01) ,C22C 18/00 (2006.01) ,C22C 38/00 (2006.01) ,C22C 38/14 (2006.01) ,C23C 2/02 (2006.01) ,G01N 25/20 (2006.01)
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
04
characterised by the coating material
08
Tin or alloys based thereon
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
18
Alloys based on zinc
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
14
containing titanium or zirconium
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2
Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
02
Pretreatment of the material to be coated, e.g. for coating on selected surface areas
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
25
Investigating or analysing materials by the use of thermal means
20
by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Applicants:
新日本製鐵株式会社 NIPPON STEEL CORPORATION [JP/JP]; 〒1008071 東京都千代田区大手町二丁目6番3号 Tokyo 6-3, Otemachi 2-chome, Chiyoda-ku, Tokyo 1008071, JP (AllExceptUS)
後藤 靖人 GOTO, Yasuto [JP/JP]; JP (UsOnly)
黒崎 将夫 KUROSAKI, Masao [JP/JP]; JP (UsOnly)
水口 俊則 MIZUGUCHI, Toshinori [JP/JP]; JP (UsOnly)
Inventors:
後藤 靖人 GOTO, Yasuto; JP
黒崎 将夫 KUROSAKI, Masao; JP
水口 俊則 MIZUGUCHI, Toshinori; JP
Agent:
志賀 正武 SHIGA, Masatake; 〒1048453 東京都中央区八重洲2丁目3番1号 Tokyo 2-3-1, Yaesu, Chuo-ku, Tokyo 1048453, JP
Priority Data:
2005-19619205.07.2005JP
Title (EN) HOT-DIP Sn-Zn SYSTEM COATED STEEL SHEET HAVING GOOD CORROSION RESISTANCE
(FR) FEUILLE D'ACIER REVETUE A SYSTEME SN-ZN D'IMMERSION A CHAUD PRESENTANT UNE BONNE RESISTANCE A LA CORROSION
(JA) 良好な耐食性を有する溶融Sn-Zn系めっき鋼板
Abstract:
(EN) A hot-dip Sn-Zn system coated steel sheet comprising a steel sheet and a hot-dip coating layer which is formed on the surface of the steel sheet and comprises 1 to 8.8% by mass of Zn and a remainder composed of 91.2 to 99.0% by mass of Sn and impurities, the ratio of the endothermic value produced by the Sn-Zn eutectic crystal melting and the endothermic value produced by the Sn primary crystal melting in the hot-dip coating layer satisfying the following formula: (endothermic value produced by Sn primary crystal melting)/[(endothermic value produced by Sn primary crystal melting)+(endothermic value produced by Sn-Zn eutectic crystal melting)] ≥ 0.3; and the temperature of endothermic peak produced by the Sn primary crystal melting being not lower than 200°C and not higher than 230°C or lower and that produced by the Sn-Zn eutectic crystal melting being not lower than 198°C and lower than 200°C.
(FR) La présente invention a trait à une feuille d'acier revêtue à système Sn-Zn d'immersion à chaud comportant une feuille d'acier et une couche de revêtement d'immersion à chaud qui est formée sur la feuille d'acier et comporte 1 à 8,8 % en poids de Zn et le reste constitué de 91,2 à 99.0 % en poids de Sn et des impuretés, le rapport de la valeur endothermique produite par la fusion cristalline eutectique de Sn-Zn et la valeur endothermique produite par la fusion cristalline primaire de Sn dans la couche de revêtement d'immersion à chaud correspondant à la formule suivante: (valeur endothermique produite par la fusion cristalline primaire de Sn)/[ (valeur endothermique produite par la fusion cristalline primaire de Sn)+( valeur endothermique produite par la fusion cristalline eutectique de Sn-Zn)] $m(G) 0,3; et la température du pic endothermique produit par la fusion cristalline primaire de Sn étant égale ou supérieure à 200 °C et égale ou inférieure à 230 °C et celle produite par la fusion cristalline eutectique de Sn-Zn étant égale ou supérieure à 190 °C et inférieure à 200 °C.
(JA)  この溶融Sn-Zn系めっき鋼板は、鋼板と、前記鋼板の表面に形成され、1~8.8質量%のZnと残部がSn:91.2~99.0質量%および不可避的不純物からなる溶融めっき層を有し、前記溶融めっき層のSn-Zn共晶の融解熱とSn初晶の融解熱のそれぞれの吸熱量比が以下の関係式を満たし、  (Sn初晶の融解に伴う吸熱量)/{(Sn初晶の融解に伴う吸熱量)+(Sn-Zn共晶の融解に伴う吸熱量)}≧0.3  Sn初晶の融解に伴う吸熱ピーク温度が200°C以上230°C以下であって、Sn-Zn共晶の融解に伴う吸熱ピーク温度が198°C以上200°C未満である。
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
MXMX/a/2007/015836KR1020080019265EP1905859BRPI0612003-2JPWO2007004671RU02387735
US20090047542US20100151117JP2012001818CN101208448CA2611439KR1020100123781
IN9374/DELNP/2007