Acoustic Emission Investigation of Rolling/Sliding Contact Fatigue Failure of NiCr–Cr3C2 Coating
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- 作者：Li Guolu ; Xu Zhonglin ; Dong Tianshun ; Wang Haidou…
- 关键词：AE ; NiCr–Cr3C2 coating ; rolling/sliding contact fatigue ; SPS
- 刊名：Journal of Thermal Spray Technology
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：25
- 期：7
- 页码：1365-1372
- 全文大小：3,307 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Surfaces and Interfaces and Thin Films
Tribology, Corrosion and Coatings
Materials Science
Characterization and Evaluation Materials
Operating Procedures and Materials Treatment
Analytical Chemistry - 出版者：Springer Boston
- ISSN：1544-1016
- 卷排序：25
文摘
NiCr–Cr3C2 coating was fabricated using supersonic plasma spraying technology. Subsequently, rolling/sliding contact fatigue (R/SCF) testing was carried out, using acoustic emission (AE) technology to monitor the failure process. The results showed that R/SCF consists of three failure modes, namely abrasion, spalling, and delamination. Abrasion is the main failure mode, but delamination is the most severe. The AE monitoring results indicated that the R/SCF failure process is composed of normal contact, crack initiation, crack propagation, and material removal stages. The frequency of each stage was analyzed by fast Fourier transform, revealing a peak frequency for each stage mainly distributed from 200 to 250 kHz.