表面技术Issue(6)：1-6,16,7.DOI:10.16490/j.cnki.issn.1001-3660.2015.06.001
纳米Al2 O3等离子喷涂涂层的制备及性能分析
Preparation and Properties Analysis of Plasma Sprayed Nano Alumina Coatings
摘要
Abstract
Objective To study the microstructures, mechanical and tribological properties of Al2 O3 micro-nano coatings. Methods Nanosized Al2 O3 powders were deposited using atmospheric plasma spraying technique. Particle size distributed from 35 to 75 μm, consisted of nano-Al2 O3 , were obtained by spray drying. Micro-coatings of commercial Al2 O3 feedstocks were also pre-pared as control. Microstructure of powders and coatings, as well as the worn surface of coatings, were characterized. Moreover, microstructure, mechanical and tribological behaviors of both nano and micro coatings were analyzed, respectively. Results Al2 O3 nano-coatings showed a better interface bonding between the layers compared with Al2 O3 micro coatings which resulted in great im-provement of adhesion strength and microhardness of Al2 O3 nano coatings. The friction coefficient of Al2 O3 micro coating is 0. 41 while Al2 O3 nano coating 0. 34 at the speed of 1000 r/min and 750 g load. Conclusion Al2 O3 nano coatings showed a better me-chanical properties and wear resistance due to the excellent microstructure.关键词
等离子喷涂/纳米Al2O3涂层/磨损/耐磨性Key words
plasma spraying/nano-Al2 O3 coatings/wear/abrasion resistance分类
矿业与冶金引用本文复制引用
杜三明,靳俊杰,肖宏滨,张永振..纳米Al2 O3等离子喷涂涂层的制备及性能分析[J].表面技术,2015,(6):1-6,16,7.基金项目
国家自然科学基金(51375146,51175149) Fund：Supported by the National Natural Science Foundation of China (51375146,51175149) （51375146,51175149）
