表面技术2017，Vol.46Issue(9)：7-12,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.09.002
等离子喷涂WC-12Co涂层抗冲刷磨损行为
Erosion Wear Behavior of WC-12Co Coatings Prepared by APS
摘要
Abstract
To study the erosion wear resistance of WC-12Co composite coatings. in this paper,WC-12Co composite coat-ings was prepared on Q235 steel substrate by atmospheric plasma spraying (APS) method. The microstructure, phase composi-tion and erosion wear behavior of the obtained coatings were studied by using a variety of analytical techniques, such as XRD, SEM, EDS and self-made dry sand erosion wear tester. The mechanical properties of the coating were characterized by the Viv-torinox microhardness tester. showed that the coatings was mainly composed of WC, and a small amount of W2C, Co3W3C and Co6W6C phase. The coatings was about 300 μm thick,the bonding coatings was about 50 μm thick, and the cross-sectional mi-crohardness was 1169HV0.05at a load of 0.5 N. The maximum mass loss of the coating is 0.4788 mg/g at 60 degrees, and the minimum mass loss of the coating is about 0.3696 mg/g at 30 degrees. the wear loss firstly increase then decrease with the growth of the erosion angle, and amounted to the maximum value when the erosion angle was 60°. The coatings mainly sub-jected to plastic wear at the small angle (30°) while it subjected to brittle one at the large angle (90°).关键词
等离子喷涂/WC-12Co涂层/冲刷磨损/显微硬度/脱碳/截面形貌Key words
atmospheric plasma spraying/WC-12Co composite coating/erosion wear/micro-hardness/decarbonization/cross-sectional images分类
矿业与冶金引用本文复制引用
梁存光,李新梅,张鹏飞..等离子喷涂WC-12Co涂层抗冲刷磨损行为[J].表面技术,2017,46(9):7-12,6.基金项目
国家自然科学基金项目(51561029) Supported by the National Natural Science Foundation of China (51561029) （51561029）
