Title:
金属基質上にクロムコーティングを製造する方法、及び、被覆物品
Document Type and Number:
Japanese Patent JP6576832
Kind Code:
B2
Abstract:
A method for producing a trivalent chromium based coating on a metal substrate, a layer of nickel phosphorus alloy is deposited on a metal substrate and a trivalent chromium layer is electroplated on the Ni—P layer. The coated metal substrate is subjected to one or more heat treatments to harden the coating and to produce multiphase layers including at least one layer containing crystalline Ni and crystalline Ni3P, and at least one layer containing crystalline Cr and crystalline CrNi. By using this method it is possible to produce coatings having a Vickers microhardness value higher than 2000 HV.
Inventors:
Miettinen, Juha
Lysa, Yussi
Lysa, Yussi
Application Number:
JP2015552117A
Publication Date:
September 18, 2019
Filing Date:
January 15, 2014
Export Citation:
Assignee:
Savrock Limited
International Classes:
C25D5/14; B32B15/01; C23C28/00; C23C28/02; C25D5/50
Domestic Patent References:
| JP63203792A | ||||
| JP60013094A | ||||
| JP54124831A | ||||
| JP9095793A | ||||
| JP2002285375A | ||||
| JP6248472A | ||||
| JP7031854U | ||||
| JP60196209A |
Foreign References:
| US5252360 | ||||
| US3164897 | ||||
| US5252360 | ||||
| US4461680 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki