作　　者： ; ; ; (李赤）;

机构地区： 暨南大学理工学院材料科学与工程系

出　　处： 《特种铸造及有色合金》 2009年第10期905-908,共4页

摘　　要： 采用恒压模式微弧氧化在纯锆表面制备出含Ca和P的ZrO2复合膜层,研究了当阳极电压为300V、350V、400V时微弧氧化膜层的厚度、表面形貌、相组成、表面Ca和P含量及分布的状况。结果表明,膜层呈多孔状,主要由含Ca和P的四方相氧化锆(t-ZrO2)和少量单斜相氧化锆(m-ZrO2)构成,膜层微孔内的Ca、P含量低于膜层表面基体和微孔边缘的Ca、P含量。随着阳极电压的升高,膜层厚度增加,微孔孔径增大,膜层中的t-ZrO2的含量增多,m-ZrO2的含量稍有减少,膜层表面Ca和P的含量逐渐升高,且Ca含量的增长速度高于P含量的增长速度,Ca和P的质量比增大。 ZrO2-based composite film containing Ca and P was prepared on the surface of pure Zr by micro-arc oxidation (MAO) under constant anode voltages. The thickness, morphology, phase constituent and Ca, P contents in surface of the film investigated with anode voltages of 300 V, 350V and 400V. The results reveal that MAO zirconia films exhibiting porous structure is mainly composed of tetragonal zirconia (t-ZrO2) and monoclinal zirconia (m-ZrO2) containing Ca and P, in which contents of P and Ca in the pore are lower than those on the film surface and along the pore edge. With increasing in anode voltage, the thickness of film, the aperture of pore and the t-ZrO2 content are increased, while the m-ZrO2 phase is slightly decreased. In addition, on the surface of film, the Ca and P contents are increased, and the increase of Ca content is obviously faster than that of P content, resulting in the increase of Ca via P ratio.

关 键 词： 微弧氧化 膜层 阳极电压

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]