摘要
采用大气等离子喷涂法在Q235钢基体上制备了NiCrAl/Al_(2)O_(3)-20wt%TiO_(2)复合涂层,采用扫描电镜、X射线衍射仪和能谱仪等对涂层微观形貌、相组织结构进行表征。测定了涂层截面显微硬度。分析了涂层在30°、60°、90°冲蚀角下涂层冲蚀率。结果表明:冲蚀角为60°时,冲蚀率最大,为0.4326 mg·mm^(-2);在30°时冲蚀率最小,为0.3225 mg·mm^(-2);90°冲蚀角的为0.3742 mg·mm^(-2)。在30°冲蚀角下涂层具有较好的抗塑性冲蚀能力,在90°冲蚀角下涂层具有较好的抗脆性冲蚀能力。
NiCrAl/Al_(2)O_(3)-20wt%TiO_(2) compoud coating were prepared on Q235 steel by atmospheric plasma spraying.The micro-morphology and phase structure of the coating were characterized by scanning electron microscopy,X-ray diffraction and energy dispersive spectrometer.The microhardness of the coating was measured.The erosion rates of the coating at 30°,60°and 90°erosion angles were analyzed.The results show that the maximum erosion rate is 0.4326 mg·mm^(-2)at 60°,the smallest is 0.3225 mg·mm^(-2)at 30°,and that of 90°erosion angle is 0.3742 mg·mm^(-2).The coating has good plastic erosion resistance at 30°erosion angle.The coating has good brittle erosion resistance at 90°erosion angle.
作者
张景
李新梅
刘莲
罗芳贵
ZHANG Jing;LI Xinmei;LIU Lian;LUO Fanggui(School of Mechanical Engineering,Xinjiang University,Urumqi 830047,China)
出处
《热加工工艺》
北大核心
2023年第18期90-93,共4页
Hot Working Technology
