Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy
نویسندگان
چکیده
Herein, a NiCrAl coating was prepared on the AZ91D magnesium alloy by cold spraying technology. The microstructure, wear resistance, and corrosion resistance of sprayed were studied compared with two coatings plasma spraying. results showed that porosity two-plasma 3.21% 2.66%, respectively, while only 0.68%. hardness (650 HV0.1) higher than those (300 HV0.1, 400 HV0.1). In abrasion test, lower friction coefficient (0.346), less volume (3.026 mm3), superior accordingly coatings. Moreover, scanning electron microscopy (SEM) morphology at bottom trace compact mechanically mixed layers (MML) structure, its mechanism mainly abrasive wear, some fatigue wear. electrochemical current density (4.404 × 10?2 A·cm?2) much (25.96 A·cm?2, 26.98 A·cm?2), indicating had resistance. Therefore, preparing is feasible method to comprehensively improve alloy.
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ژورنال
عنوان ژورنال: Coatings
سال: 2021
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings11020193