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Preparation of Al/SiC Composite Coatings on Surface of Aluminum Alloy by Atmospheric Plasma Spraying
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Preparation of Al/SiC Composite Coatings on Surface of Aluminum Alloy by Atmospheric Plasma Spraying
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National Basic Research Program of China (2012CB619600); Cultivative Fund of School of Materials and Chemical Engineering, Xi’an Technological University, Schoolmaster Fund of Xi’an Technological University (XAGDXJJ1309); Open Fund of State Key Laboratory for Mechanical Behavior of Material (20131303)

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    摘要:

    對(duì)鋁合金表面等離子噴涂制備Al/SiC復(fù)合涂層進(jìn)行了研究，探索了SiC體積分?jǐn)?shù)對(duì)復(fù)合粉末的沉積行為以及Al/SiC復(fù)合涂層性能的影響規(guī)律。研究發(fā)現(xiàn)，在等離子焰流中，純SiC發(fā)生降解和氧化。SiC含量越高，等離子噴涂沉積Al/SiC復(fù)合涂層越困難，純SiC沉積后與基體粘結(jié)層之間存在裂紋；SiC含量越高，Al/SiC復(fù)合涂層硬度越高。Al/SiC (50:50)復(fù)合涂層厚度70 μm，顯微硬度達(dá)到3690 MPa，對(duì)鋁合金表面起到強(qiáng)化效果

    Abstract:

    Al/SiC composite coatings were deposited on the surface of aluminum alloy by atmospheric plasma spraying. The effects of SiC volume in Al/SiC composite powders on the deposition behavior and the properties of the Al/SiC coatings were investigated. It is found that the decarburization and oxidation of pure SiC powder occur in the plasma flame. With the increase of SiC content, the deposition of the Al/SiC composite powder becomes more difficult through plasma spraying. There exist cracks between the bond coat and the aluminum alloy substrate resulting in poor adhesion between them. The hardness of the composite coating becomes higher with the increase of SiC content. The Al/SiC (50:50) deposit with a thickness of 70 μm and a hardness of 3690 MPa can strengthen the surface of aluminum alloy

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高培虎,李建平,楊 忠,郭永春,王彥榮. Preparation of Al/SiC Composite Coatings on Surface of Aluminum Alloy by Atmospheric Plasma Spraying[J].稀有金屬材料與工程,2015,44(10):2396~2400.[Gao Peihu, Li Jianping, Yang Zhong, Guo Yongchun, Wang Yanrong. Preparation of Al/SiC Composite Coatings on Surface of Aluminum Alloy by Atmospheric Plasma Spraying[J]. Rare Metal Materials and Engineering,2015,44(10):2396~2400.]
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  • 收稿日期:2014-10-19
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  • 在線發(fā)布日期: 2016-07-13
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