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SiC泡沫陶瓷增強ZL205A鋁合金復合材料的制備與性能研究
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1.哈爾濱工業(yè)大學 材料科學與工程學院 黑龍江 哈爾濱;2.北京航天動力研究所 北京

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Preparation and mechanical properties of ZL205A alloy-infiltrated SiC foam ceramic composites
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1.School of Materials Science and Engineering,Harbin Institute of Technology;2.Beijing Aerospace Propulsion Institute

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    摘要:

    本實驗通過擠壓浸滲工藝成功制備了SiC泡沫陶瓷增強ZL205A鋁合金復合材料,并研究了不同孔隙率的泡沫陶瓷增強相對復合材料性能的影響。通過微觀結(jié)構(gòu)分析,制備的復合材料兩相間結(jié)合緊密,沒有裂紋及其他缺陷產(chǎn)生。多孔陶瓷作為增強相可以有效地細化ZL205A合金的晶粒,多孔陶瓷孔隙率的降低,孔結(jié)構(gòu)越小,合金晶粒越細小。對制備的復合材料進行力學性能測試,復合材料的硬度和抗彎強度最高能夠達到127.6HV和415MPa。對制備的復合材料進行摩擦磨損測試,結(jié)果表明,連續(xù)陶瓷相的存在將鋁基體嚴重的粘著磨損和剝落磨損轉(zhuǎn)變?yōu)檩^輕的磨粒磨損,極大提升了復合材料的摩擦磨損性能,為其用于耐磨領(lǐng)域提供了理論依據(jù)。

    Abstract:

    ZL205A alloy-infiltrated SiC foam ceramic composites are prepared through extrusion infiltration process. The effect of different porosity of SiC foam ceramic on the properties of composites is investigated. The SiC foam ceramics are tightly combined with the ZL205A matrix material, and there are few cracks and other defects can be observed. The SiC foam ceramic as the reinforcing phase refines the grains of the ZL205A matrix phase. The pore structure and the grain size are finer and smaller with decreasing of the reinforcing phase porosity. The mechanical properties of the ZL205A alloy-infiltrated SiC foam ceramic composites are investigated. The hardness and flexural strength of the composites are 127.6HV and 415MPa, respectively. The wear resistance of the composites is also investigated, the results demonstrate that the addition of ceramic reinforcing phase can effectively transform the severe adhesive wear and spalling wear of the matrix phase into lighter abrasive wear, which greatly improves the friction and wear properties of the composite.

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綦育仕,汪彥博,杜蘭君,費巖晗,杜之明. SiC泡沫陶瓷增強ZL205A鋁合金復合材料的制備與性能研究[J].稀有金屬材料與工程,2020,49(11):3741~3747.[Qi Yushi, Wang Yanbo, Du Lanjun, Fei Yanhan, Du Zhiming. Preparation and mechanical properties of ZL205A alloy-infiltrated SiC foam ceramic composites[J]. Rare Metal Materials and Engineering,2020,49(11):3741~3747.]
DOI:10.12442/j. issn.1002-185X.20190896

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  • 收稿日期:2019-10-30
  • 最后修改日期:2019-12-09
  • 錄用日期:2019-12-11
  • 在線發(fā)布日期: 2020-12-09
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