Global Patent Index - EP 0438971 A1

EP 0438971 A1 19910731 - Coated metallic substrate.

Title (en)

Coated metallic substrate.

Title (de)

Beschichtetes metallisches Substrat.

Title (fr)

Substrat métallique revêtu.

Publication

EP 0438971 A1 19910731 (DE)

Application

EP 90810867 A 19901112

Priority

CH 18190 A 19900122

Abstract (en)

[origin: US5230755A] A protective layer for a metal substrate is metallurgically bonded to the substrate and contains (as a percentage by mass) 35 to 50% chromium, up to 10% of which can be replaced by molybdenium, and at least iron, the proportion of iron being at least 25%. The minimum hardness is 800 HVO.1, obtained by a structure having a minimum content of 5% by volume as sigma phase. The sigma phase is obtained by heat-treatment of the coated substrate. The protective layer is particularly resistant to corrosion and also has good resistance to erosion and wear.

Abstract (de)

Eine Schutzschicht für ein metallisches Substrat, die metallurgisch mit dem Substrat verbunden ist, enthält (in Masse-%) 35 bis 50 % Chrom, das bis zu 10 % durch Molybdän ersetzt sein kann, und mindestens Eisen, wobei der Eisenanteil mindestens 25 % betragen muss. Die Mindesthärte beträgt 800 HV0.1, was durch einen Mindestanteil von 5 Vol.-% des Gefüges als Sigma-Phase erreicht wird. Die Sigma-Phase wird durch eine Wärmebehandlung des beschichteten Substrats erhalten. Die Schutzschicht ist besonders widerstandsfähig gegen Korrosion, besitzt jedoch auch gute Erosions- und Verschleissfestigkeit.

IPC 1-7

C23C 4/08; C23C 4/18; C23C 26/02; C23C 30/00

IPC 8 full level

C21D 9/00 (2006.01); C22C 27/06 (2006.01); C22C 30/00 (2006.01); C22C 38/00 (2006.01); C22C 38/22 (2006.01); C22F 1/00 (2006.01); C23C 4/08 (2006.01); C23C 4/18 (2006.01); C23C 26/00 (2006.01); C23C 26/02 (2006.01); C23C 30/00 (2006.01)

CPC (source: EP US)

C23C 4/08 (2013.01 - EP US); C23C 4/18 (2013.01 - EP US); C23C 26/02 (2013.01 - EP US); C23C 30/00 (2013.01 - EP US)

Citation (search report)

  • [A] DE 3821896 A1 19891228 - CASTOLIN SA [CH]
  • [A] WO 8901534 A1 19890223 - WHITFORD PLASTICS [GB]
  • [A] EP 0290052 A1 19881109 - CASTOLIN SA [CH]
  • [A] FR 2166360 A1 19730817 - SCHMIDT GMBH KARL
  • [A] WO 8910433 A1 19891102 - GLYCO METALL WERKE [DE]
  • [A] US 3187717 A 19650608 - PEARSALL HOWARD W
  • [A] PATENT ABSTRACTS OF JAPAN, Band 11, Nr. 18 (C-398)[2465], 17. Januar 1987; & JP-A-61 194 152 (TOYOTA MOTOR CORP.) 28-08-1986
  • [A] PATENT ABSTRACTS OF JAPAN, Band 11, Nr. 43 (C-402)[2490], 7. Februar 1987; & JP-A-61 207 565 (NIPPON STEEL CORP.) 13-09-1986
  • [A] PATENT ABSTRACTS OF JAPAN, Band 11, Nr. 259 (C-441)[2706], 21. August 1987; & JP-A-62 60 855 (TOYOTA MOTOR CORP.) 17-03-1987
  • [A] PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 78 (C-102)[956], 15. Mai 1982; & JP-A-57 13 166 (HITACHI ZOSEN) 23-01-1982
  • [A] PATENT ABSTRACTS OF JAPAN, Band 11, Nr. 106 (C-414)[2553], 3. April 1987; & JP-A-61 253 357 (YOSHIKAWA KOGYO) 11-11-1986

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL

DOCDB simple family (publication)

EP 0438971 A1 19910731; EP 0438971 B1 19940511; AT E105594 T1 19940515; DE 59005683 D1 19940616; ES 2053163 T3 19940716; JP 3065674 B2 20000717; JP H04214879 A 19920805; US 5230755 A 19930727

DOCDB simple family (application)

EP 90810867 A 19901112; AT 90810867 T 19901112; DE 59005683 T 19901112; ES 90810867 T 19901112; JP 510691 A 19910121; US 64160391 A 19910115