稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2015年
1期
93-101
,共9页
张凡%马爱斌%宋丹%江静华%卢富敏%张留艳%杨东辉%陈建清
張凡%馬愛斌%宋丹%江靜華%盧富敏%張留豔%楊東輝%陳建清
장범%마애빈%송단%강정화%로부민%장류염%양동휘%진건청
biomedical Mg alloy%rare earth alloying%in-vitro degradation%corrosion resistance%rare earths
Two kinds of Mg-Zn-Mn-Ca alloys with and without cerium were designed and fabricated. In-vitro degradation tests and electrochemical evaluations were carried out to compare their biocorrosion behavior in Hank’s solution at 37 oC. After adding cerium, the continuous network distributed Ca2Mg6Zn3 phases in Mg-2Zn-0.5Mn-1Ca alloy (Alloy I) were separated due to the emerging non-continuously distributed Mg2Ca phase and Mg12CeZn phase. This change led to corrosion acceleration of Mg ma-trix at the initial stage but also sped up the formation of compact corrosion products for Mg-2Zn-0.5Mn-1Ca-1.5Ce alloy (Alloy II), and therefore enhanced its biocorrosion resistance. Cerium containing Alloy II has the potential to be used as future biomate-rials.
