中南大学学报（自然科学版）Issue(10)：3611-3618,8.DOI:10.11817/j.issn.1672-7207.2015.10.008
高分子涂层和氮化钛涂层对Mg-6%Zn-10%（β-TCP）耐腐蚀性能的影响
Effect of Mg-6%Zn-10%(β-TCP) using polymer coatings and titanium nitride coating on corrosion resistance
摘要
Abstract
The surfaces of Mg-6%Zn-10%(β-TCP) composite were coated with titanium nitride (TiN) coating through multiple-arc ion sputtering, sprayed with polycaprolactone (PCL) or chitosan (CS) coating, respectively. The effects of three coatings on the corrosion resistance were evaluated through immersion test in Ringer’s solution. The rate of hydrogen evolution, change of mass, change of surface morphology of different immersion time and variation of pH value of Ringer’s solution were recorded in immersion test. The results show that surface morphology differs with three coatings, but micro-pores are found in all of them. TiN coating is corrugated shape, and the surface of PCL coating is smooth, while the surface of CS coating is rough. Immersion test shows that the corrosion debris are found in TiN group after 84 h of immersion. However, samples of CS group and PCL group remain relatively complete with slight crack of edge. The pH value of immersion solution reaches 11.3 in TiN group after 92 h. Conversely, the pH values of Ringer’s solution of CS group and PCL group increase slowly, reaching 10.2 after 6 d. Moreover, both the rate of hydrogen evolution and change of mass of PCL group are less than those of CS group. Above all, TiN coating can accelerate the corrosion rate of the composite in the Ringer’s solution. PCL coating and CS coating can improve corrosion resistance of the composite in Ringer’s solution, and the corrosion resistance of PCL coating is superior to that of the CS coating.关键词
Mg-6%Zn-10%(β-TCP)/复合材料/氮化钛/聚己内酯/壳聚糖/涂层/耐腐蚀性Key words
Mg-6%Zn-10%(β-TCP)/composite/titanium nitride/polycaprolactone/chitosan/coating/corrosion resistance分类
矿业与冶金引用本文复制引用
陈畅,陈良建,余琨,戴翌龙,邵春生,赵俊,曹君,谢丽子,刘蓓蕾..高分子涂层和氮化钛涂层对Mg-6%Zn-10%（β-TCP）耐腐蚀性能的影响[J].中南大学学报（自然科学版）,2015,(10):3611-3618,8.基金项目
中南大学中央高校基本科研业务费专项资金资助(2013zzts306)；中南大学粉末冶金国家重点实验室资助项目(Project (2013zzts306) supported by the Fundamental Research Funds for the Central Universities of Central South University （2013zzts306）
Project supported by State Key Laboratory of Powder Metallurgy, Central South University) （）
