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特征喷涂参数对等离子喷涂纳米 Al2 O3 -13%TiO2涂层微观结构及耐磨性能的影响
引用本文:贺毅,马东林,金玉山,钟标钊. 特征喷涂参数对等离子喷涂纳米 Al2 O3 -13%TiO2涂层微观结构及耐磨性能的影响[J]. 表面技术, 2015, 44(5): 31-37. DOI: 10.16490/j.cnki.issn.1001-3660.2015.05.006
作者姓名:贺毅  马东林  金玉山  钟标钊
作者单位:西华大学 材料学院,成都,610039
基金项目:四川省科技厅应用基础研究资金资助项目,西华大学人才培养基金资助项目(R0910105) Fund:Supported by the Applied Basic Research Program of Science and Technology Commission Foundation of Sichuan Province,the Talent Cultivation Program of Xihua University
摘    要:目的研究等离子喷涂纳米Al2O3-13%TiO2的特征喷涂参数(CPSP)对涂层微观结构及耐磨性能的影响,探索更合理的等离子喷涂工艺参数。方法采用等离子喷涂,在Q235钢表面制备过渡层为NiCrAl、陶瓷层为纳米Al2O3-13%TiO2的涂层系统。对涂层试样进行高温和常温磨损性能测试,并对比分析喷涂粉末、涂层的微观结构和相组成。结果纳米涂层为微观双模结构,由部分熔化区和完全熔化区组成,存在裂纹、孔隙等缺陷,其主要物相为α-Al2O3,γ-Al2O3和rutile-TiO2。纳米涂层磨损失效的主要原因是内部板条的分层剥落和涂层表面材料的塑性变形切削。结论随着CPSP的增大,纳米涂层的耐磨性能增强,且高温磨损性能较室温磨损性能为差。纳米Al2O3-13%TiO2涂层微观结构中部分熔化区结构和纳米晶粒的存在显著提高了涂层的耐磨性。

关 键 词:等离子喷涂  纳米Al2 O3-13%TiO2 涂层  特征喷涂参数  微观组织结构  耐磨性能
收稿时间:2014-12-09
修稿时间:2015-05-20

Influence of CPSP on Microstructure and Wear Property of Nanostructured Al2O3-13%TiO2 Coating Deposited by Plasma Spraying
HE Yi,MA Dong-lin,JIN Yu-shan and ZHONG Biao-zhao. Influence of CPSP on Microstructure and Wear Property of Nanostructured Al2O3-13%TiO2 Coating Deposited by Plasma Spraying[J]. Surface Technology, 2015, 44(5): 31-37. DOI: 10.16490/j.cnki.issn.1001-3660.2015.05.006
Authors:HE Yi  MA Dong-lin  JIN Yu-shan  ZHONG Biao-zhao
Affiliation:School of Materials Science and Engineering,Xihua University, Chengdu 610039, China,School of Materials Science and Engineering,Xihua University, Chengdu 610039, China,School of Materials Science and Engineering,Xihua University, Chengdu 610039, China and School of Materials Science and Engineering,Xihua University, Chengdu 610039, China
Abstract:ABSTRACT:Objective To study the influence of different critical plasma spray parameters ( CPSP) on the microstructure and the wear property of nanostructured Al2 O3-13%TiO2 coating deposited by plasma spraying so as to optimize the plasma spraying param-eters. Methods Nanostructured alumina-titania coatings with NiCrAl as the transition layer and Al2 O3-13%TiO2 as the ceramic lay-er on the surface of the Q235 steel were prepared by plasma spraying. The wear property of the coatings at room temperature and at high temperature was respectively tested, and phase constitutions and the microstructure of spraying powder and coating layer were respectively analyzed by XRD and SEM. Results The results showed that the nanostructured coating had a bio-model structure, consisting of PM region and FM region with defects such as crack and pore. The main phases were α-Al2 O3 , γ-Al2 O3 and rutile-TiO2 . Lamination and spallation of coating materials, and the plastic deformation of nanostructured coating materials were the main reasons for coating system failure during the sliding wear test. Conclusion With the ascending of CPSP, the wear property in-creased, and the wear property at room temperature was better than that at high temperature. The presence of PM region and nano-crystals in the nanostructured Al2 O3-13%TiO2 coating significantly increased the wear property.
Keywords:plasma spraying  nanostructured Al2 O3-13%TiO2 coatings  CPSP  microstructure  wear property
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