304不锈钢表面冷喷涂TC4钛合金涂层性能研究  

Research on Cold Sprayed TC4 Titanium Alloy Coating on 304 Stainless Steel

作　　者：王治中[1,2] 黄国胜 邢路阔[2] 李相波[2] 马力[2] Wang Zhizhong;Huang Guosheng;Xing Lukuo;Li Xiangbo;Ma Li(China University of Petroleum(East China),Qingdao 266580,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266101,China)

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中国船舶重工集团公司第七二五研究所青岛分部海洋腐蚀与防护国防科技重点实验室,山东青岛266101

出　　处：《钛工业进展》2020年第2期7-13,共7页Titanium Industry Progress

基　　金：海洋腐蚀与防护重点实验室基金资助项目(JS1802,JK190401)。

摘　　要：采用冷喷涂技术在304不锈钢表面制备了TC4钛合金涂层,通过扫描电子显微镜观察了涂层的形貌、组织结构,并利用电化学方法研究了涂层的腐蚀电化学特征。研究结果表明,冷喷涂制备的TC4钛合金涂层致密性存在较为明显的梯度现象,靠近基体的涂层密度明显高于表面;涂层喷涂过程没有出现明显氧化现象,与基体的结合强度可达20 MPa左右;涂层的耐腐蚀性能优于304不锈钢,可大大提升不锈钢材料在海洋环境中的耐点蚀性能。The TC4 titanium alloy coating was prepared on the surface of 304 stainless steel by cold spray technology.The morphology and structure of the coating were observed by scanning electron microscope.The electrochemical characteristics of the coating were studied by electrochemical methods.The results show that the density of TC4 alloy coating prepared by cold spray has obvious gradient,the density of the coating near the substrate is significantly higher than the surface;the coating spraying process does not produce significant oxidation,and the bonding strength with the substrate can reach about 20 MPa;the corrosion resistance of the coating is better than 304 stainless steel,which can greatly improve the corrosion resistance of stainless steel materials in the marine environment.

关 键 词：冷喷涂 钛合金涂层 海洋环境 腐蚀 结合强度 

分 类 号：TG146.23[一般工业技术—材料科学与工程]