2022 Fiscal Year Final Research Report
Development of high-performance nitrided layer and improvement of tribological properties by plasma nitriding of steel
| Project/Area Number |
20K14643
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 18040:Machine elements and tribology-related
|
|---|
| Research Institution | Daido University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2020-04-01 – 2023-03-31
|
| Keywords | 鋼 / 窒化層 / 化合物層 / 摩擦係数 / 表面テクスチャリング |
|---|
| Outline of Final Research Achievements |
In this study, develop of a new treatment method were performed that can be formed on the inner surface of the narrow gap between mechanical parts and have the self-repairing property of the texturing surface, and obtained the following results. (1) A new nitriding apparatus forming high-density plasma was constructed, and the state of the plasma and the sample surface after nitriding were clarified. (2) By analyzing the surface roughness after nitriding, the effect on sliding was clarified. (3) The state of the nitrided layer formed by the nitriding conditions were clarified, and found the conditions for forming fine irregularities on the surface. (4) The sliding characteristics of a specimen with a nitrided layer with fine irregularities was clarified.
|
| Free Research Field |
表面改質
|
| Academic Significance and Societal Importance of the Research Achievements |
窒化処理した際に形成する化合物層の摺動特性は様々な条件に依存するため複雑であり，使用条件によって著しく優れた結果や悪い結果が得られるなど不明点が多い．この処理法を新しく応用するためには，この化合物層の摺動特性を明らかにする必要がある．また，従来技術の問題点であったテクスチャリング表面の自己修復性や隙間内面の処理も期待される．クラックが発生せず，高い潤滑性を有した化合物層の形成条件やその特性を明らかにする本研究では，これまでにない新しい学術的知見を得ることができる．産業では高い潤滑技術が求められており，摩擦低減が1つのキーワードとなっているため社会的意義が大きい．
|
