材料研究与应用
材料研究與應用
재료연구여응용
MATERIALS RESEARCH AND APPLICATION
2013年
3期
178-182
,共5页
超音速火焰喷涂%WC-12Co涂层%耐熔融锌腐蚀
超音速火燄噴塗%WC-12Co塗層%耐鎔融鋅腐蝕
초음속화염분도%WC-12Co도층%내용융자부식
HVOF%WC-12Co coating%corrosion resistance to molten zinc
采用超音速火焰喷涂在316L基体上制备了WC-12Co涂层，并对熔融锌液对涂层的腐蚀机理进行了分析．研究结果表明：所制备的 WC-12Co 涂层均匀致密、孔隙率低于1％，平均硬度超过1300 HV0．3；WC-12Co涂层具有良好的耐熔融锌液腐蚀性能；在残余应力及热应力作用下，涂层会产生裂纹，熔融锌液沿着涂层裂纹渗透并腐蚀基体，导致涂层从基体剥离失效．
採用超音速火燄噴塗在316L基體上製備瞭WC-12Co塗層，併對鎔融鋅液對塗層的腐蝕機理進行瞭分析．研究結果錶明：所製備的 WC-12Co 塗層均勻緻密、孔隙率低于1％，平均硬度超過1300 HV0．3；WC-12Co塗層具有良好的耐鎔融鋅液腐蝕性能；在殘餘應力及熱應力作用下，塗層會產生裂紋，鎔融鋅液沿著塗層裂紋滲透併腐蝕基體，導緻塗層從基體剝離失效．
채용초음속화염분도재316L기체상제비료WC-12Co도층，병대용융자액대도층적부식궤리진행료분석．연구결과표명：소제비적 WC-12Co 도층균균치밀、공극솔저우1％，평균경도초과1300 HV0．3；WC-12Co도층구유량호적내용융자액부식성능；재잔여응력급열응력작용하，도층회산생렬문，용융자액연착도층렬문삼투병부식기체，도치도층종기체박리실효．
WC-12Co coating was prepared by HVOF on 316L substrate and its corrosion mechanism in mol-ten zinc was investigated .The results showed that the WC-12Co coating was uniform and dense with the porosity less than 1% ,and the coating has good corrosion resistance to molten zinc with the average micro hardness exceeded 1300 HV0 .3 .The crack occured due to the residual stress and thermal stress in the coat-ings ,the molten zinc corroded the substrate by penetrating the crack ,resulting in the coating peeling off from the substrate .
