Ni含量对层状TiC-Ni/EP复合材料结构及性能的影响

doi:10.19976/j.cnki.43-1448/TF.2024112

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Abstract To address the problem that low thermal conductivity and high thermal expansion coefficient of substrate materials for electronic packaging, the layered porous TiC-Ni frameworks were prepared by ice template method, and then layered TiC-Ni/EP composites were prepared through infiltrating epoxy (EP) into the pores of porous frameworks via vacuum impregnation method in this paper. Scanning electron microscope, universal mechanical testing machine, and thermodilatometer were used to study the effects of Ni content on the pore morphology, laminar structure characteristics of the layered porous TiC-Ni frameworks and the microstructure, mechanical, and thermal properties of the composites. The results show that the interlayer spacing and wall thickness of porous frameworks increase, the compressive strength and bending strength of the composites decrease with the increase of Ni content, while the thermal conductivity and thermal expansion coefficient of composites increase. The porous frameworks and the composite with φ(Ni)=2% have the best laminar structure characteristics, the thermal conductivity of the composite is 2.24 W/(m·K), and the thermal expansion coefficient is 30.23×10^-6 K^-1.

Key words： TiC-Ni/EP composite ice template microstructure mechanical property thermal property

Received: 20 December 2024 Published: 15 April 2025

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	HOU Junfeng
	WU Jisi
	JIANG Wenli
	WANG Wenhua
	WU Shangyu

Cite this article:

HOU Junfeng,WU Jisi,JIANG Wenli, et al. The effects of Ni content on the microstructure and properties of layered TiC-Ni/EP composites[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(2): 123-130.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2024112 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I2/123

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