CAJ | 학술논문

本研究采用微弧氧化与电化学沉积相结合的方法在镁合金（Mg-Zn-Zr）表面制备Ca-P生物陶瓷涂层.利用XRD、SEM、划痕仪、显微镜以及电化学工作站等测试手段来表征所得到的生物陶瓷的成分组成、表面形貌、涂层与机体的结合力、涂层厚度以及涂层材料的耐腐蚀性能.结果表明：在沉积溶液相同的情况下，沉积时间都为30 min，直流电沉积电流大小制备的Ca-P生物陶瓷涂层成分近似相同，主要成分为CaHPO4·2H2O和CaHPO4；在沉积电流为20 mA时，直流电沉积制备的Ca-P陶瓷涂层的腐蚀电位达到最大值-1.49 V，腐蚀电流密度达到最小值0.24×10-6 A·cm-2，其耐蚀性能也最强.
본연구채용미호양화여전화학침적상결합적방법재미합금（Mg-Zn-Zr）표면제비Ca-P생물도자도층.이용XRD、SEM、화흔의、현미경이급전화학공작참등측시수단래표정소득도적생물도자적성분조성、표면형모、도층여궤체적결합력、도층후도이급도층재료적내부식성능.결과표명：재침적용액상동적정황하，침적시간도위30 min，직류전침적전류대소제비적Ca-P생물도자도층성분근사상동，주요성분위CaHPO4·2H2O화CaHPO4；재침적전류위20 mA시，직류전침적제비적Ca-P도자도층적부식전위체도최대치-1.49 V，부식전류밀도체도최소치0.24×10-6 A·cm-2，기내식성능야최강.
Mg-Zn-Zr alloy was surface-treated to fabricate Ca-P biological ceramic coating by micro-arc oxidation and electro-chemical deposition method.The phase composition,surface morphology,adhesion of body with coating,coating thickness and corrosion resistence were characterized by XRD,SEM ,scratch tester,microscope and electrochemical workstation.The results show that the Ca-P biological ceramic coating composition is the approximately same whose main component are CaHPO4 ·2 H2O and CaHPO4 under the condition of same deposition solution, deposition time for 30 min.In the deposion current of 20 mA , the corrosion potential of Ca-P biological ceramic coating reaches the maximum of-1.49 V, the corrosion current density reaches the minimum of 0.24 × 10-6 A·cm-2 ,which is the most strong corrosion resistance.