摘要
金属材料的腐蚀性能与其表面润湿特性有着密切的关系。采用亚音速火焰喷涂技术制备了玻璃-Cr2O3陶瓷涂层,设计了一套运行在高温环境中且密封的专用试验平台,研究经过不同保温时间后,重金属在45钢与喷有玻璃-Cr2O3陶瓷涂层的45钢表面的润湿角及相关现象的变化。结果表明:相同质量的重金属液滴在45钢表面的润湿角为18°,在玻璃-Cr2O3陶瓷涂层表面的润湿角为114°,玻璃-Cr2O3陶瓷涂层抗液态重金属润湿性能较好。固化后重金属颗粒与试样之间的接触面积及剪切强度均有所不同,304不锈钢与颗粒剪切强度为1.42MPa,而涂层与颗粒剪切强度为0.21MPa。
The corrosion resistance of metal materials is closely associated with the surface wetting property. A glass-Cr2O3 ceramic coating was prepared by subsonic flame spraying technology. Running in the high ternperature environment, a sealed and specialized experimental platform was designed. The wetting behaviors of liquid heavy metal on 45 steel and glass-Cr2O3 ceramic coating surface were evaluated after different time of heat preservation. The results show that the wetting angle is 114~ on the glass-Cr2O3 ceramic coating surface in contrast to 18~ on the 45 steel surface for the same heavy metal droplet. The contact area and the shear strength between the solidified heavy metal particle and the specimens are different. The shear strength is 1.42 MPa and 0.21 MPa for the 304 stainless steel and the glass-Cr303 ceramic coatings surface between solidified heavy metal particles, respectively.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2013年第3期69-74,共6页
China Surface Engineering
基金
湖南省研究生科技创新项目(2012SCX06)
湖南省高校科技创新团队支持计划
湖南省重点学科建设项目(机械工程)
