ZrC-AlN强化Mo基复合材料的制备和性能

doi:10.19976/j.cnki.43-1448/TF.2024087

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Abstract In order to meet the application needs of a new generation thermal structure materials of high temperature resistance, anti-radiation, oxidation resistance, and high strength and toughness, Mo-based composites with different ZrC-AlN contents were prepared by three-dimensional dry ball milling, cold isostatic pressing, and high-temperature argon atmosphere sintering. The influences of ceramic content on the dispersion of composite powders, as well as the microstructures, oxidation behavior, and properties of composites, were studied using scanning electron microscope, X-ray diffractometer, and simultaneous thermal analyzer. The results indicate that uniformly dispersed metal ceramic composite powders can be obtained through three-dimensional dry ball milling. After oxidation from room temperature to 1 200 ℃, the mass loss rate of the composites decreases greatly with the increase of ceramic phase content, indicating the improved oxidation resistance of composites by introducing antioxidant ceramic phases. When introducing ceramic phase, the compressive strength of the composites increase greatly with the maximum of 1 315.8 MPa, increasing by about one time compared to pure Mo, it’s because the ceramic phases with high hardness, high modulus, and low compressibility which enhance the compressive property of the composites. However, the bending strength of composites decrease, which is a comprehensive result of closed pores, interface reactions, and the mechanical properties of each phase itself.

Key words： thermal structure material high temperature ceramic Mo-based composite mechanical property oxidation resistance

Received: 16 October 2024 Published: 08 April 2025

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	YAN Chunlei
	SONG Dongji
	REN Junye

Cite this article:

YAN Chunlei,SONG Dongji,REN Junye. Preparation and properties of ZrC-AlN reinforced Mo-based composites[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(1): 42-50.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2024087 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I1/42

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