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Phase segregation and its effect on the adhesion of Cr-Al-N coatings on K38G alloy prepared by magnetron sputtering method |
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| Authors: | Tianpeng Li Meishuan Li |
| Affiliation: | a High Performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China b Graduate School of Chinese Academy of Sciences, Beijing, 100039, China |
| Abstract: | Cr1 − xAlxN (0 < x < 1) coatings were fabricated by a reactive magnetron sputtering method on a K38G alloy. The composition and microstructure of the coatings were investigated. Phase segregation of cubic AlN was considered in Cr0.65Al0.35N using X-ray diffraction analyses. This segregation of cubic AlN from CrAlN matrix might be induced by the high micro-stress. The critical failure load determined by scratch tests of the coating with c-AlN segregation was highest among all the coatings studied in the present work, which indicated that the coating has the best adhesion. |
| Keywords: | Cr1 &minus xAlxN coatings Cubic AlN segregation Residual stress Scratch test |
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