中国组织工程研究Issue(43)：6966-6970,5.DOI:10.3969/j.issn.2095-4344.2015.43.015
单因素实验法确定两种软磁合金镀铬的最佳工艺条件
Optimal chroming conditions of two soft magnetic alloys as determined by one-factor experimental method
摘要
Abstract
BACKGROUND:Chroming can improve the corrosion resistance of soft magnetic aloys. OBJECTIVE:To identify the optimal chroming conditions of two soft magnetic aloys, Fe-Cr-Mo and Fe-Ni, so as to improve their corrosion resistance. METHODS:Twelve pieces of square-shaped Fe-Cr-Mo and Fe-Ni soft magnetic aloys were casted in the size of 20 mm×20 mm×2 mm. After sanding and polishing, chrome plating was performed on these specimens and the coating thickness and hardness were measured. The selection factors included electroplate type (hexavalent chromium and trivalent chromium), current density (15, 20, 25, 35, 40, 45 A/dm2) and electroplating time (30, 40, 60 minutes). The optimal chroming conditions were determined by one-factor experimental method and the chrome plating was observed under a scanning electron microscope. RESULTS AND CONCLUSION:Cr6+ coating was significantly better than Cr3+ coating in the aspects of hardness, thickness and uniformity, indicating Cr6+ coating can significantly improve the corrosion resistance of Fe-Cr-Mo and Fe-Ni aloys. For Fe-Cr-Mo soft magnetic aloy, the optimal conditions of Cr6+ coating were as folows: current density of 45 A/dm2 and electroplating time of 60 minutes; the optimal conditions of Cr3+ coating were as folows: current density of 20 A/dm2 and electroplating time of 30 minutes. For Fe-Ni soft magnetic aloys, the optimal conditions of Cr6+ coating were as folows: current density of 35 A/dm2 and electroplating time of 60 minutes; the optimal conditions of Cr3+ coating were as folows: current density of 20 A/dm2 and electroplating time of 40 minutes.关键词
生物材料/口腔生物材料/铁铬钼/铁镍/电镀铬/单因素实验法/耐腐蚀/组织构建分类
医药卫生引用本文复制引用
姜瑞,聂二民,张春元,曾尽娣,谈济..单因素实验法确定两种软磁合金镀铬的最佳工艺条件[J].中国组织工程研究,2015,(43):6966-6970,5.基金项目
广东省科技厅社会发展项目(2011B080701010、2012B061700066) （2011B080701010、2012B061700066）
