Title:
耐摩耗および減摩の作用を有するメッキ層、その調製方法、およびピストンリング
Document Type and Number:
Japanese Patent JP7018988
Kind Code:
B2
Abstract:
Provided are a friction reduced and wear resistant coating, a preparation method thereof and a piston ring. The coating includes an adhesive layer, a transition layer, a gradient layer and a function layer in sequence. The gradient layer is a CrMoxN layer in which Mo content progressively increases. The function layer includes at least one cyclical layer. Each cyclical layer includes a first CrMoxN layer and a second CrMoxN layer in sequence from bottom to top. The Mo content of the first CrMoxN layer is lower than the Mo content of the second CrMoxN layer. The coating provided by the present invention has a friction coefficient of 0.3 to 0.45, 10% to 30% lower than a CrN coating, and has an overall hardness of up to 1400 HV to 2600 HV and a thickness of 80 µm, satisfying the required durability for the full lifecycle of the piston ring. The preparation process of the coating is simple and highly operable, and thus is convenient for industrialization.
Inventors:
▲劉▼ 千喜
▲張▼ 波
李 ▲開▼▲順▼
▲張▼ 波
李 ▲開▼▲順▼
Application Number:
JP2020088993A
Publication Date:
February 14, 2022
Filing Date:
May 21, 2020
Export Citation:
Assignee:
Yiqia New Department Shuanghuan Enclosure Co., Ltd.
International Classes:
C23C14/06; C23C14/32; F02F5/00; F16J9/26
Foreign References:
| US20150211635 | ||||
| CN104388899A |
Attorney, Agent or Firm:
Patent Business Corporation Tani / Abe Patent Office
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