The corrosion behavior of Ti6Al4V fabricated by selective laser melting in the artificial saliva with different fluoride concentrations and pH values

被引：68
作者：
Zhang, Hongwei [1 ]
Man, Cheng [1 ]
Dong, Chaofang [3 ]
Wang, Liwei [2 ]
Li, Wen [1 ]
Kong, Decheng [3 ]
Wang, Li [3 ]
Wang, Xin [1 ]
机构：
[1] Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China
[2] Qingdao Univ, Coll Elect Engn, Qingdao 266071, Peoples R China
[3] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Key Lab Corros & Protect MOE, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 179卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Titanium; EIS; XPS; Polarization; Passive film; DUPLEX STAINLESS-STEEL; PURE TITANIUM; TI-6AL-4V ALLOY; MECHANICAL-PROPERTIES; PASSIVATION BEHAVIOR; ELECTROCHEMICAL-BEHAVIOR; HYDROFLUORIC-ACID; DISSOLVED-OXYGEN; DENTAL MATERIALS; ELECTRON-BEAM;
D O I：
10.1016/j.corsci.2020.109097
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of the SLM and wrought Ti6Al4V are comparatively investigated. The critical NaF concentrations of SLM Ti6Al4V in the three cases of pH = 2, 4 and 6 are 0.0020 M, 0.080 M and 0.10 M, respectively, which are similar to those of the wrought sample. The repassivation process occurs when NaF concentrations are much larger than the critical values. The crystallinity and the Al and F contents decrease when the NaF concentration and pH value rise. As compared to the wrought Ti6Al4V, the SLM sample exhibits significantly worse corrosion resistance in almost all the test solutions.
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页数：19
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