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低压等离子喷涂316L等轴晶涂层及其性能研究
引用本文:杨德明,田博涵,高阳. 低压等离子喷涂316L等轴晶涂层及其性能研究[J]. 材料科学与工艺, 2011, 19(4): 24-27
作者姓名:杨德明  田博涵  高阳
作者单位:大连海事大学热喷涂中心;大连海事大学热喷涂中心;大连海事大学热喷涂中心
基金项目:国家自然科学基金资助项目(51172033)
摘    要:为研究低压等离子喷涂等轴晶涂层组织性能和形成机理,采用大气等离子喷涂(APS)和低压等离子喷涂(LPPS),分别制备了316L不锈钢涂层.利用金相显微镜,X射线衍射和显微硬度等方法,分析了2种涂层的金相组织、相结构、显微硬度和耐蚀性.结果表明:一定条件下制备的低压等离子喷涂SUS316L不锈钢涂层明显不同于传统大气等离...

关 键 词:低压等离子喷涂  涂层  316L  等轴晶

Microstructure and mechanical properties of the equiaxed 316L coating deposited by low pressure plasma spraying
YANG De-ming,TIAN Bo-han and GAO Yang. Microstructure and mechanical properties of the equiaxed 316L coating deposited by low pressure plasma spraying[J]. Materials Science and Technology, 2011, 19(4): 24-27
Authors:YANG De-ming  TIAN Bo-han  GAO Yang
Affiliation:Dalian Maritime University,Center of Thermal Spray,Dalian 116026,China;Dalian Maritime University,Center of Thermal Spray,Dalian 116026,China;Dalian Maritime University,Center of Thermal Spray,Dalian 116026,China
Abstract:To investigate the microstructure and properties of low pressure plasma sprayed equiaxed coatings, SUS 316L stainless coatings were prepared by air plasma spray(APS)and low pressure plasma spray(LPPS) processes.The microstructure,phase composition,microhardness and corrosion resistance of the coatings were investigated using optical micrograph(OM),X-ray diffraction(XRD)and so on.The results show that the microstructure of LPPS 316L coatings reveals the fine equiaxed microstructure similar to bulk stainless steel with nearly oxides-free,which is significantly different from that of APS coating with lamellar structure.Compared with APS coating,the coating prepared by LPPS also shows relatively high corrosion resistance.The lamellar structure of APS coating resulted in anisotropic character and high cooling rate during splat cooling leads to higher microhardness than that of LPPS equuiaxed coating.
Keywords:low pressure plasma spray  coatings  316L  equiaxed microstructure
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