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Materials Science and Engineering of Powder Metallurgy  2025, Vol. 30 Issue (1): 42-50    DOI: 10.19976/j.cnki.43-1448/TF.2024087
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Preparation and properties of ZrC-AlN reinforced Mo-based composites
YAN Chunlei, SONG Dongji, REN Junye
Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, China
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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 wordsthermal structure material      high temperature ceramic      Mo-based composite      mechanical property      oxidation resistance     
Received: 16 October 2024      Published: 08 April 2025
ZTFLH:  TG148  
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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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