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采用微弧氧化技术,以β-甘油磷酸钠和乙酸钙混合溶液为电解液,在固定正向电压(450 V)和氧化时间(5 min)等参数情况下,研究了负向电压对纯钛表面微弧氧化膜层的相组成和形貌的影响规律.结果表明:负向电压为100~200V时,微弧氧化膜层较均匀,膜层由二氧化钛和磷酸三钙组成;负向电压升至300V,膜层表面被严重烧蚀,其主要物相为钛酸钙.

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