Material Development for Cold Spray Valve Seat
コールドスプレーバルブシートの材料開発
- Delivery
- Available on the other site
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- Publication code
- 20264396
- Paper/Info type
- JSAE Transaction
Vol.57 No.3
- Pages
- 556-563(Total 8 p)
- Date of publication
- May 2026
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 伊澤 佳典 |
| Author(E) | 1) Yoshinori Izawa |
| Affiliation(J) | 1) 日産自動車(株) |
| Abstract(J) | エンジン熱効率向上に重要な強いタンブル流を可能とする吸気ポート形成のため，コールドスプレーバルブシートを開発した．材料の軟質さが有利な成膜性と硬質さが有利な耐摩耗性の両要件を満たすため，基地材料と硬質粒子の複合化を材料開発の指針とし，被膜の強度およびその強化機構を追求することで耐摩耗被膜を実現した． Translation |
| Abstract(E) | The material for the cold spray valve seat was developed to form a straight port which was effective for strong tumble flow. Hardness is necessary to ensure wear resistance, but if the material is hard, plastic deformation during particle impact becomes difficult, and the adhesion between particles and between the coating layer and the substrate decreases. In order to solve this trade-off, it was realized in the composite layer of Corson alloy which is an age-hardening copper alloy and Cobalt base hard particle. In this development, it was found that the fracture strength was improved by the addition of hard particles, and the phenomenon of Ni silicide which seemed to be effective for the fracture strength improvement was discovered. |
