Damping Capacity and Storage Modulus of SiC Matrix Composites Infiltrated by AlSi Alloy

被引:6
|
作者
Li, Xuan [1 ]
Fan, Yongzhe [1 ]
Zhao, Xue [1 ]
Ma, Ruina [1 ]
Du, An [1 ]
Cao, Xiaoming [1 ,2 ]
Ban, Huiyun [1 ]
机构
[1] Hebei Univ Technol, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Sch Mat Sci & Engn, Key Lab New Type Funct Mat Hebei Prov, Tianjin 300132, Peoples R China
[2] Tianjin Gongda Galvanizing Equipment Co Ltd, Tianjin 300132, Peoples R China
基金
中国国家自然科学基金;
关键词
SiC ceramic matrix composite; AlSi alloy; damping capacity; storage modulus; ALUMINUM-ALLOY; MECHANICAL-PROPERTIES; INTERNAL-FRICTION; BEHAVIOR; STRENGTH; MICROSTRUCTURE; TEMPERATURE; DEPENDENCE; WEAR; MG;
D O I
10.3390/met9111195
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, we describe how an aluminum alloy-reinforced silicon carbide ceramic matrix composite (SiCCMC) with excellent damping capacity and storage modulus was fabricated by infiltration. The effects of silicon (Si) on the microstructure and damping capacity of the composite were studied. The interface bonding and damping mechanism involved were also discussed. The results show that composites with high damping capacity can be obtained by infiltrating SiC ceramics with aluminum alloy. The residual Si in the SiC ceramic had little effect on the damping capacity, and it provided the passage of aluminum alloy into the interior of the SiC ceramic. The aluminum atoms penetrate the SiC particles by diffusion. Optimal composite damping capacity was obtained when the Si content in the aluminum alloy was 15 wt. %, because the AlSi/SiC interface friction dissipated most of thermal energy. Ti3SiC2 formed on the surface had little effect on the damping capacity. Additionally, by changing the Si content in the aluminum alloy, the strength and damping capacity of the composites can be controlled.
引用
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页数:11
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