Preparation of bio-ceramic composite coatings on Ti6Al4V titanium alloy by gas-detonation spraying

IF 0.3 Q4 PHYSICS, MULTIDISCIPLINARY

Bulletin of the University of Karaganda-Physics Pub Date : 2022-03-30 DOI:10.31489/2022ph1/89-98

D. Baizhan, B. Rakhadilov, L. Zhurerova, K. Torebek

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引用次数: 1

Abstract

The paper presents study of a new approach to manufacturing carrier implants with a combination of bioactivity, biocompatibility, and mechanical properties, composite powders of hydroxyapatite and titanium with a mass content of 50:50 % when sprayed by gas detonation spraying. Experimental studies of the surface morphology and cross-section microstructure, phase composition and mechanical properties of HATi composite coatings are obtained. The experimental results showed that the cross-section microstructures of HATi composite coatings are typical plate structures comprising curved strips formed by well-deformed and oxidized Ti plates and limited deformed HA plates. Composite coatings’ morphology and phase states were studied using scanning electron microscopy and X-ray diffractometry. It was found that the deprived coatings mainly consist of the phases HA, Ti and TiO. The elemental composition study results designated that the atomic ratio of calcium and phosphorus in the obtained coatings is Ca/P ~ 1.64, which is close to the value of the initial powder — Ca/P ~ 1.67. This indicates a limited change in the chemical composition during the coating formation.

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Ti6Al4V钛合金气爆喷涂制备生物陶瓷复合涂层

本文研究了一种制备生物活性、生物相容性和力学性能相结合的载体植入物的新方法，即采用气体爆轰喷射法制备质量含量为50:50 %的羟基磷灰石和钛复合粉末。对HATi复合涂层的表面形貌、断面组织、相组成和力学性能进行了实验研究。实验结果表明，HATi复合涂层的截面组织为典型的板状结构，由变形良好的氧化Ti板和变形有限的HA板组成的弯曲条状结构。利用扫描电子显微镜和x射线衍射仪研究了复合涂层的形貌和相态。结果表明，被剥夺的涂层主要由HA、Ti和TiO相组成。元素组成研究结果表明，制备的涂层中钙磷原子比为Ca/P ~ 1.64，接近初始粉末Ca/P ~ 1.67。这表明在涂层形成过程中化学成分的变化有限。

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来源期刊

Bulletin of the University of Karaganda-Physics PHYSICS, MULTIDISCIPLINARY-

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50.00%

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