以Al(NO3)3乙醇溶液为电解液,利用阴极微弧电沉积技术在纯钛表面制备了较厚的氧化铝涂层.分析了涂层的形貌、成分和相组成,测试了涂层的抗高温氧化、电化学腐蚀及抗热震性能,并探讨了阴极微弧沉积氧化铝涂层的机理.涂层由γ-Al2O3和少量的α-Al2O3组成.涂层中含有少量的钛元素,表明涂层/钛界面附近的钛基体在微弧放电作用下也参与氧化铝涂层的沉积和烧结过程.涂层经过100次(700 ℃水淬)热循环后仍与钛基体结合良好.700 ℃恒温氧化结果表明,具有氧化铝涂层的钛氧化速率降低了4倍.
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