混合粉末-悬浮液轴向等离子喷涂 AlO-YSZ 涂层在牛血清溶液中的性能

Performance of Hybrid Powder-Suspension Axial Plasma Sprayed AlO-YSZ Coatings in Bovine Serum Solution.

作者信息

Gopal Vasanth, Goel Sneha, Manivasagam Geetha, Joshi Shrikant

机构信息

Department of Physics, School of Advanced Sciences, VIT, Vellore 632014, India.

Centre for Biomaterials, Cellular and Molecular Theranostics, VIT, Vellore 632014, India.

出版信息

Materials (Basel). 2019 Jun 14;12(12):1922. doi: 10.3390/ma12121922.

DOI:10.3390/ma12121922

PMID:31207880

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6631380/

Abstract

Ceramic coatings on metallic implants are a promising alternative to conventional implants due to their ability to offer superior wear resistance. The present work investigates the sliding wear behavior under bovine serum solution and indentation crack growth resistance of four coatings, namely (1) conventional powder-derived alumina coating (Ap), (2) suspension-derived alumina coating (As), (3) composite AlO-20wt % Yittria stabilized Zirconia (YSZ) coating (AsYs) deposited using a mixed suspension, and (4) powder AlO-suspension YSZ hybrid composite coating ApYs developed by axial feeding plasma spraying, respectively. The indentation crack growth resistance of the hybrid coating was superior due to the inclusion of distributed fine YSZ particles along with coarser alumina splats. Enhanced wear resistance was observed for the powder derived Ap and the hybrid ApYs coatings, whereas the suspension sprayed As and AsYs coatings significantly deteriorated due to extensive pitting.

摘要

金属植入物上的陶瓷涂层因其具有出色的耐磨性，是传统植入物的一个有前景的替代方案。本研究调查了四种涂层在牛血清溶液中的滑动磨损行为以及抗压痕裂纹扩展性能，这四种涂层分别为：(1) 传统粉末衍生氧化铝涂层 (Ap)；(2) 悬浮液衍生氧化铝涂层 (As)；(3) 使用混合悬浮液沉积的复合AlO-20wt%氧化钇稳定氧化锆 (YSZ) 涂层 (AsYs)；(4) 通过轴向送粉等离子喷涂制备的粉末AlO-悬浮液YSZ混合复合涂层ApYs。由于混合涂层中包含分布的细小YSZ颗粒以及较粗的氧化铝片层，其抗压痕裂纹扩展性能更优。粉末衍生的Ap涂层和混合ApYs涂层表现出增强的耐磨性，而悬浮液喷涂的As涂层和AsYs涂层由于大量点蚀而显著劣化。