第35卷第2期 2014年4月
热处理技术与装备
RECHULI JISHUYUZHUANGBEI
Vol.35,No.2 Apr,2014
·材料研究·
电源占空比对TC4合金微弧氧化生物膜层性能影响
蒋成勇，王凤彪2，葛研军1
（大连交通大学机械工程学院，辽宁大连116028；2.大连理工大学，辽宁大连116024）
摘要：为了利用微弧氧化工艺在钛合金表面制备钙磷生物膜层，并确定该工艺电源占空比对膜层性能影响。研究了在恒电流和恒电压下，电源占空比对于膜层厚度、表面粗糙度和钙磷摩尔含量的影响规律。并利用SEM分析了不同占空比对于膜层表面形貌的影响。结果表明，恒压下随占空比增加，膜层厚度和表面粗糙度同时增加，膜层中钙磷含量增加；而恒流模式下，膜层厚度和表面粗糙度增长缓慢且呈先增加后减小趋势，膜层表面形貌、粗糙程度变化不大。故希望获得厚膜层应选择
恒压模式，而恒流模式适于表面光滑膜层制备。关键词：微弧氧化；占空比；膜层厚度；表面粗糙度
中图分类号：TG174.444文献标志码：A文章编号：1673-4971(2014)02-0015-04
Affectof PowerDutyCycleonPerformanceofBiocoatingObtainedby
Microarc Oxidation on the TC4 Alloy Surfaces JIANG Cheng-yong', WANG Feng-biao’, GE Yan-jun
(1. School of Mechanical Engineering,Dalian Jiaotong University, Dalian Liaoning 116028, China;
2. Dalian University of Technology,Dalian Liaoning 116024, China)
Abstract: To take advantage of microarc oxidation technique in preparation of calcium phosphorus biocoat ing on titanium alloy surface and to determine the impadt of power duty cycle in the process on the perform-ance of coating, the effect of power duty cycle on coating thickness, surface roughness, mole contents of calcium and phosphorus were studied under the constant current and constant voltage. And the effects of different duty cycle on surface morphology of coating were analyzed by SEM. The results indicated that with increasing the duty cycle under constant pressure, coating thickness and surface roughness increased at the same time, mole contents of calcium and phosphorus in coating increased too. Under constant cur-rent mode, coating thickness and surface roughness slow growth, and appeared a tend of first increase and then decrease, and surface morphology and surface roughness of coating a little changed. Therefore to want to get thick coating, the constant pressure mode should be selected, while constant curent mode fited for the preparation of smooth surface coating-
Key words: microarc oxidation;duty cycle;coating thickness;roughness
钙磷陶瓷是一种典型的生物活性材料，具有与人体硬组织相似的化学成分和结构，是人骨和牙齿收璃日期：2013-11-01
作者介：蒋成勇（1979-），男，博士，主要从事机电控制研究工作
联系电话：041181158632;E-mail:jiangcyong@163.com
基全项目：2013年辽宁省教育厅科学研究项目（项目号L2013514）万方数据
的主要无机成分。当其植人人体时不仅能引导成骨，还能与新骨形成骨性结合。在肌肉、韧带或皮下