Three-stage degradation behavior and dealloying assisted galvanic corrosion mechanism of 300 MPa grade Zn-2Cu-xLi (x=0.2-0.8) alloys in simulated body fluid

被引：10

作者：

Cao, Meng ^{[1
]}

Shi, Zhang-Zhi ^{[1
,2
]}

Sun, Jin-Ling ^{[1
]}

Li, Zhen ^{[3
]}

Wang, Lu-Ning ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, 30 Xueyuan Rd,Haidian Dist, Beijing 100083, Peoples R China

[2] Liaoning Acad Mat, Inst Mat Intelligent Technol, Shenyang 110004, Peoples R China

[3] Luoyang Ship Mat Res Inst LSMRI, State Key Lab Marine Corros & Protect, Qingdao 266237, Peoples R China

来源：

CORROSION SCIENCE | 2024年 / 228卷

基金：

中国国家自然科学基金;

关键词：

Biodegradable Zn alloys; Zn-Cu-Li ternary phase; Corrosion behavior; ZN-AG ALLOYS; EXFOLIATION CORROSION; BONE REGENERATION; MG ALLOYS; IN-VITRO; MICROSTRUCTURE; LI; STRENGTH; PERFORMANCE; EVOLUTION;

D O I：

10.1016/j.corsci.2024.111818

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion behaviors of biodegradable Zn alloys with ternary phases are rarely studied. This paper reveals threestage corrosion behavior of high -strength Zn-2Cu-(0.2-0.8)Li alloys immersed in simulated body fluid for 30 days. At stage I, Zn phase is preferentially corroded due to cathodic Zn-Cu-Li ternary phases recently identified. At stage II, corrosion is suppressed due to formation of protective layer containing LiOH and Li2CO3 with appropriate Pilling -Bedworth ratios. At stage III, dealloying of Zn-Cu-Li phases rises their Cu contents, accelerating galvanic corrosion and resulting in large pits beyond 200 mu m.

引用

页数：18

共 63 条

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