The addition of bio‐inert ceramics such as alumina and zirconia can significantly improve the mechanical properties of hydroxyapatite bioactive coatings and increase their biocompatibility. In the present study, the surface of a titanium substrate was coated by the electrophoretic deposition method (EPD). Moreover, the reaction bonding process has been used to precipitate the nanocomposite containing the hydroxyapatite (HA), alumina, yitteria‐stabilized zirconia (YSZ). The coating process was performed by an electrical power supply and a suspension of hydroxyapatite, aluminum, and YSZ nanopowders. For preparing a suspension consisting of 50% isopropanol and 50% acetone, 0.6 g/L of iodine was used as a stabilizer. Green and sintered coatings were analyzed by FE‐SEM and XRD. In addition, the mechanical properties such as bonding strength, hardness, and toughness were measured. The hardness, bonding strength, and toughness of the HA coating were 107 ± 10.3 HV, 10.8 ± 3.2MPa, and 0.72MPa√m, respectively, while those of the HA‐Al₂O₃‐YSZ nanocomposite coating were 213 ± 1.8 HV, 35 ± 1.6MPa, and 1.6MPa√m, respectively.

中文翻译：

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电泳沉积法制备羟基磷灰石涂层的机械性能的增强

添加生物惰性陶瓷（例如氧化铝和氧化锆）可以显着改善羟基磷灰石生物活性涂层的机械性能并提高其生物相容性。在本研究中，钛基板的表面通过电泳沉积法（EPD）进行涂覆。此外，反应键合工艺已用于沉淀包含羟基磷灰石（HA），氧化铝，氧化钇稳定的氧化锆（YSZ）的纳米复合材料。涂覆过程通过电源和羟基磷灰石，铝和YSZ纳米粉的悬浮液进行。为了制备由50％异丙醇和50％丙酮组成的悬浮液，将0.6g / L的碘用作稳定剂。通过FE-SEM和XRD对生坯和烧结涂层进行了分析。另外，机械性能，如粘结强度，硬度，测定韧性。HA涂层的硬度，粘结强度和韧性分别为107±10.3 HV，10.8±3.2MPa和0.72MPa√m，而HA‐Al₂ O ₃ -YSZ纳米复合涂层分别为213±1.8 HV，35±1.6MPa和1.6MPa√m。