CAJ | 학술논문

对铸态(F)Mg-3.08Nd-0.27Zn-0.43Zr(质量分数,%)镁合金进行了固溶处理(T4)及固溶+人工时效(T6).采用光学显微镜研究了 F、T4、T6状态下 Mg-3.08Nd-0.27Zn-0.43Zr 合金的显微组织,采用析氢和失重实验测试合金在模拟体液中的生物腐蚀性能,并且利用扫描电子显微镜观察了腐蚀后合金的表面腐蚀形貌,采用电化学法测试了合金在模拟体液中的循环极化曲线.结果表明:固溶处理及固溶+人工时效处理均有助于提高合金在模拟体液中的生物腐蚀性能,且 Mg-3.08Nd-0.27Zn-0.43Zr 合金在模拟体液中的腐蚀方式为均匀腐蚀.
대주태(F)Mg-3.08Nd-0.27Zn-0.43Zr(질량분수,%)미합금진행료고용처리(T4)급고용+인공시효(T6).채용광학현미경연구료 F、T4、T6상태하 Mg-3.08Nd-0.27Zn-0.43Zr 합금적현미조직,채용석경화실중실험측시합금재모의체액중적생물부식성능,병차이용소묘전자현미경관찰료부식후합금적표면부식형모,채용전화학법측시료합금재모의체액중적순배겁화곡선.결과표명:고용처리급고용+인공시효처리균유조우제고합금재모의체액중적생물부식성능,차 Mg-3.08Nd-0.27Zn-0.43Zr 합금재모의체액중적부식방식위균균부식.
@@@@The as-cast Mg-3.08Nd-0.27Zn-0.43Zr (mass fraction, %) magnesium alloy (F) was solution treated (T4) and solution treated+aged (T6). The microstructures of the alloy under F, T4 and T6 conditions were observed by optical microscope. The biocorrosion properties of the alloy in simulated body fluid (SBF) were evaluated using hydrogen evolution and mass loss experiments. The corrosion morphologies of the alloy after corrosion were observed by scanning electron microscopy. The cyclic polarization curves of the alloy in SBF were conducted by electrochemical method. The results show that both solution treatment and solution treatment+aging treatment can improve biocorrosion properties of the alloy in SBF. Moreover, the corrosion mode of the Mg-3.08Nd-0.27Zn-0.43Zr alloy in SBF is uniform corrosion.