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首页> 外文期刊>Materials and Manufacturing Processes >Development of Hydroxyapatite Coating by Microplasma Spraying
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Development of Hydroxyapatite Coating by Microplasma Spraying

机译：等离子体喷涂羟基磷灰石涂层的研制

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摘要

Bioactive hydroxyapatite (HAP) coating (Ca/P-1.67) was developed on surgical grade SS316L substrate using the microplasma spraying (MIPS) process with low (1.5 kW) plasmatron power. The MIPS-HAP coating showed both crystallinity and volume percent open porosity much higher than those usually reported for HAP coating deposited by the conventional macroplasma spraying (MAPS) process with high plasmatron power. The X-ray diffraction (XRD) data identified the coating to be nearly phase pure. The Fourier transformed infrared (FTIR) data suggested that a process of dehydroxylation and rehydroxylation might have occurred in the as-sprayed and post-heat treated coatings, respectively. The coating had a highly heterogeneous microstructure comprising of splats, completely and/or partially molten and unmelted splats retaining a nonfiattened core, micropres, macropres, inter-, and intrasplat cracks.
机译：生物活性羟基磷灰石（HAP）涂层（Ca / P-1.67）是在手术级SS316L基材上使用微等离子体喷涂（MIPS）工艺以低（1.5 kW）等离子加速器功率开发的。 MIPS-HAP涂层显示出的结晶度和体积开孔率均远高于通常采用等离子加速器功率的常规大等离子体喷涂（MAPS）工艺沉积的HAP涂层的结晶度和开孔孔隙率。 X射线衍射（XRD）数据表明涂层几乎是纯相的。傅里叶变换红外（FTIR）数据表明，喷涂后和热处理后的涂层可能分别发生了脱羟基和再羟基化的过程。该涂层具有高度不均匀的微观结构，该微观结构包括：小片，完全和/或部分熔融和未熔融的小片，其中保留了非纤维化的芯，微压片，大片，片间和片内裂纹。

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