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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Structural analysis of hydroxyapatite/bioactive glass composite coatings obtained by plasma spray processing
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Structural analysis of hydroxyapatite/bioactive glass composite coatings obtained by plasma spray processing

机译：等离子喷涂获得的羟基磷灰石/生物活性玻璃复合涂层的结构分析

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摘要

Bioactive materials such as hydroxyapatite (HA) are used as coatings on metallic implants, producing a conjugate with better performance. The coatings are in general obtained by a plasma spray process. In this work the structural properties of composite coatings hydroxyapatite/bioactive glass (HA/BG) as well as coatings of the pure materials are measured. The coatings were obtained by plasma spraying mixtures of the powders Bioglass and HA, in different proportions. The process parameters, arc current and primary/secondary gas ratios, were also varied. X-ray diffraction (XRD), infrared spectroscopy and scanning electron microscopy (SEM) measurements were made of the coatings. The in vitro bioactivity of the different coatings was also evaluated. The results showed that Bioglass addition to the coating powders increased the dissolution rates and rate of formation of a HA film on the surface of the coatings, thus increasing its in vitro bioactivity compared to pure HA coatings.
机译：生物活性材料，例如羟基磷灰石（HA）被用作金属植入物上的涂层，从而产生性能更好的结合物。通常通过等离子喷涂工艺获得涂层。在这项工作中，测量了羟基磷灰石/生物活性玻璃（HA / BG）复合涂层以及纯材料涂层的结构性能。通过等离子喷涂不同比例的Bioglass和HA粉末混合物获得涂层。工艺参数，电弧电流和一次/二次气体比也有所变化。对涂层进行X射线衍射（XRD），红外光谱和扫描电子显微镜（SEM）测量。还评估了不同涂层的体外生物活性。结果表明，向涂料粉末中添加生物玻璃可提高涂料表面的溶出度和HA膜形成速度，从而与纯HA涂料相比，可提高其体外生物活性。

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