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发明公开
CN109183127A 一种镁合金表面羟基磷灰石复合涂层的制备方法 无效 - 撤回

一种镁合金表面羟基磷灰石复合涂层的制备方法
摘要：
本发明公开了一种镁合金表面羟基磷灰石复合涂层的制备方法，包括步骤：对镁合金表面依次进行打磨、抛光和微弧氧化处理，然后浸入聚多巴胺改性的羟基磷灰石分散液中，在100～120℃保温0.5～1h，然后取出，用蒸馏水洗净表面并干燥，再次浸入上述聚多巴胺改性的羟基磷灰石分散液中，如此重复3～5次，在镁合金表面形成羟基磷灰石复合涂层。通过对去除氧化层的镁合金表面进行微弧氧化处理，然后用多巴胺改性的羟基磷灰石在外表面形成具有良好界面粘接性能的羟基磷灰石涂层复合涂层，改善镁合金的耐蚀性和组织相容性。
摘要（英）：

The invention discloses a preparation method of a magnesium alloy surface hydroxyapatite composite coating. The preparation method comprises the steps that the magnesium alloy surface is subjected togrinding, polishing and micro-arc oxidation treatment in sequence, soaked in polydopamine-modified hydroxyapatite dispersion liquid, subjected to heat preservation at 100-120 DEG C for 0.5-1h and taken out, the surface is cleaned with distilled water, dried and soaked in the polydopamine-modified hydroxyapatite dispersion liquid again, the operation is repeated for 3-5 times, and the hydroxyapatite composite coating is formed on the magnesium alloy surface. Since micro-arc oxidation treatment is carried out on the magnesium alloy surface with no oxidation layer, the hydroxyapatite composite coating with the good interface binding performance is formed on the outer surface of the polydopamine-modified hydroxyapatite, and the corrosion resistance and tissue compatibility of magnesium alloy are improved.

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