In this study, cold spraying(CS) was used to deposit a mixture of nickel-coated graphite and 40 vol.% Al powder(Ni-Gr/Al) on a steel substrate aiming to effectively preserve a certain volume fraction of graphite in the deposited Ni-Gr/Al composite coating. The microstructure of the as-sprayed coating and the effect of post-spray heat-treatment(PSHT) temperatures on the in-situ formation of Ni-Al intermetallic phases in coating were studied. The tribological behaviors of the as-sprayed coating an...

【文章頁數(shù)】：9 頁

【文章目錄】：
1. Introduction
2. Experiments
    2.1. Material preparation
    2.2. Coating deposition
    2.3. Post-spray heat-treatment
    2.4. Powder and coating characterizations
    2.5. Sliding wear test
3. Results and discussion
    3.1. Microstructure characterization of as-sprayed coating
    3.2. High temperature oxidation behavior of coatings
    3.3. Wear performance of coatings
        3.3.1. Coefficient of friction (COF)
        3.3.2. Tribological mechanism
4. Conclusions



本文編號：3796324