能量参数对黑色微弧氧化陶瓷膜结合力的影响  

Influence of Energy Parameters on Adhesion of Black Micro-Arc-Oxidation Ceramic Film

作　　者：钟涛生[1] 蒋百灵[2] 易茂中[3] 

机构地区：[1]江西理工大学应用科学学院,江西赣州341000 [2]西安理工大学材料学院,陕西西安710048 [3]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《材料保护》2008年第4期18-20,30,共4页Materials Protection

基　　金：国家"863"基金资助(2002AA331120)

摘　　要：以ADC12铝合金为基材,采用MAO 240/750微弧氧化设备制备了黑色微弧氧化陶瓷膜,采用胶带粘扯法和金相残余应力撕裂法检测陶瓷膜结合力,研究了温度、占空比和电压等能量参数对陶瓷膜结合力的影响。结果表明,温度越高,陶瓷膜与基体之间的结合情况越好,温度对结合力的影响是通过电介质的电离程度来实现的;结合力随着占空比和电压的升高而增强,电压过高,将产生烧蚀现象;陶瓷膜的结合力与致密层的厚度有关,致密层厚度越大,附着情况越好;满足工程应用的能量参数值分别为温度45℃、占空比18%和电压600V左右。An MAO-240/750 micro-arc-oxidation e-quipment was performed to prepare black micro-arc-oxidation(MAO)ceramic film on ADC12 aluminum alloy substrate.The adhesion of the ceramic film to the Al alloy substrate was evaluated using adhering-tearing test of adhesive tape and metallor-graphic residue stress test,while the effects of energy parameters including temperature,duty cycle and voltage on the adhesion of the black MAO ceramic film were investigated.It was found that the higher the temperature,the better the adhesion between the ceramic film and substrate,which could be related to the temperature-dependent ionization degree of the electrolyte.Moreover,the adhesive strength of the ceramic film increased with duty cycle and voltage,but the film would experience ablation at an excessively high voltage.Besides,the adhesion of the ceramic film was also correlated with the thickness of the dense layer,and the film with a thicker dense layer had better adhesive strength.In general,it could be suitable for engineering application if the energy parameters such as temperature,duty cycle and voltage were adjusted as 45 ℃,18% and 600 V.

关 键 词：能量参数 微弧氧化 结合力 温度 电压 占空比 

分 类 号：TG174.451[金属学及工艺—金属表面处理]