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常压化学气相沉积SiO2涂层的制备及其性能研究

, PP. 113-116

Keywords: 常压化学气相沉积法(APCVD),SiO2涂层,HP40钢,粘结强度

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Abstract:

以正硅酸乙酯(TEOS)为源物质,空气为载气和稀释气,采用常压化学气相沉积法(APCVD)在HP40钢表面制备了SiO2涂层.采用光学显微镜、扫描电子显微镜、能量色散能谱仪、D\MAX-C型X射线衍射仪、显微硬度仪等,研究了SiO2涂层的组织结构、表面形貌、物相组成和显微硬度;并用热震实验法和剥离实验法研究了涂层与HP40基体的结合强度.结果表明,所制备的SiO2涂层厚度约为1μm,由细小颗粒组成,颗粒比较均匀、大部分颗粒的粒径均在1μm以下;涂层无明显孔隙,与基体的结合强度较高;其显微硬度明显高于HP40基体.

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