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,2015,44(6):1-6,16.
DU San-ming,JIN Jun-jie,XIAO Hong-bin,ZHANG Yong-zhen.Preparation and Properties Analysis of Plasma Sprayed Nano Alumina Coatings[J].Surface Technology,2015,44(6):1-6,16
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
投稿时间:2015-02-09  修订日期:2015-06-20
DOI:10.16490/j.cnki.issn.1001-3660.2015.06.001
中文关键词:  等离子喷涂  纳米 Al2O3 涂层  磨损  耐磨性
英文关键词:plasma spraying  nano-Al2 O3 coatings  wear  abrasion resistance
基金项目:国家自然科学基金(51375146,51175149)
作者单位
杜三明 1. 河南科技大学 材料科学与工程学院, 河南 洛阳 471023;2. 河南科技大学 河南省材料摩擦学重点实验室, 河南 洛阳 471023 
靳俊杰 1. 河南科技大学 材料科学与工程学院, 河南 洛阳 471023;2. 河南科技大学 河南省材料摩擦学重点实验室, 河南 洛阳 471023 
肖宏滨 1. 河南科技大学 材料科学与工程学院, 河南 洛阳 471023;2. 河南科技大学 河南省材料摩擦学重点实验室, 河南 洛阳 471023 
张永振 1. 河南科技大学 材料科学与工程学院, 河南 洛阳 471023;2. 河南科技大学 河南省材料摩擦学重点实验室, 河南 洛阳 471023 
AuthorInstitution
DU San-ming 1. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; 2. Key Laboratory for Material Tribology of Henan Province, Henan University of Science and Technology, Luoyang 471023, China 
JIN Jun-jie 1. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; 2. Key Laboratory for Material Tribology of Henan Province, Henan University of Science and Technology, Luoyang 471023, China 
XIAO Hong-bin 1. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; 2. Key Laboratory for Material Tribology of Henan Province, Henan University of Science and Technology, Luoyang 471023, China 
ZHANG Yong-zhen 1. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; 2. Key Laboratory for Material Tribology of Henan Province, Henan University of Science and Technology, Luoyang 471023, China 
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中文摘要:
      目的 对比研究微/ 纳米 Al2O3 等离子喷涂涂层的组织、力学及摩擦磨损行为。 方法 以纳米Al2O3 粉末为原料,利用喷雾干燥法制备出粒径分布在 35 ~ 75 μm 的喷涂喂料,采用等离子喷涂技术在20 钢基体上制备纳米 Al2O3 涂层。 采用商用微米 Al2O3 喂料,以相同的喷涂工艺制备出微米 Al2O3 涂层。 对粉末、涂层的显微结构及涂层的磨损形貌进行表征,对比分析两种涂层的组织、力学性能和摩擦磨损行为。 结果 与微米 Al2O3 涂层相比,纳米 Al2O3 涂层粒子间结合更为致密,使得其结合强度和显微硬度得到大幅度提高。 在载荷 750 g,转速 1000 r/ min 的条件下,微米 Al2O3 涂层的摩擦系数为 0. 41,而纳米 Al2O3 涂层仅为 0. 34,并且摩擦系数值的波动幅度更为稳定。 在不同转速下,纳米 Al2O3 涂层的磨损率均降低明显。 结论 纳米 Al2O3 等离子喷涂涂层组织致密,表现出了较好的力学性能和耐磨性。
英文摘要:
      Objective To study the microstructures, mechanical and tribological properties of Al2O3 micro-nano coatings. Methods Nanosized Al2O3 powders were deposited using atmospheric plasma spraying technique. Particle size distributed from 35 to 75 μm, consisted of nano-Al2O3, were obtained by spray drying. Micro-coatings of commercial Al2O3 feedstocks were also prepared 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 Al2O3 nano-coatings showed a better interface bonding between the layers compared with Al2O3 micro coatings which resulted in great improvement of adhesion strength and microhardness of Al2O3 nano coatings. The friction coefficient of Al2O3 micro coating is 0. 41 while Al2O3 nano coating 0. 34 at the speed of 1000 r/ min and 750 g load. Conclusion Al2O3 nano coatings showed a better mechanical properties and wear resistance due to the excellent microstructure.
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