电磁发射CuCrZr轨道的沉积层特征与磨损机理

doi:10.19976/j.cnki.43-1448/TF.2022023

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Abstract The dismantling study on the CuCrZr alloy orbital after the electromagnetic emission experiment was carried out. Combined with canning electron microscopy (SEM), energy X-ray spectroscopy (EDS), X-ray diffraction (XRD), photoelectron spectroscopy (XPS) and electron backscatter diffraction (EBSD) etc., the surface of the orbital surface in four regions along the emission direction was analyzed. The deposition characteristics and wear mechanism were studied. The results show that most of the rail surface is covered by deposition. The thickness of the deposition layer tends to be thin to thick, and then to thin again in the second half of rail, and the thickest position reaches 65 μm. The main components of the deposition are Cu, Al, Al₂O₃ and Al₄Cu₉, etc. There are some typical features in the deposition layer, including spalling, grooving, water-like structure, surface-attached wear debris, pores, packed pores and cellular-dendrites, which shows a mixed state of mechanical and electrical wear. The characteristics of the deposition layer in different regions are obviously different, including thickness, size and number of pores, microstructure inside the deposition, cracks, surface morphologies, etc. Diffusion occures at the interface between the deposition layer and the rail, forming a diffusion interface. And the grain orientation of the deposition layer is perpendicular to the rail surface.

Key words： electromagnetic launch rail deposition wear mechanism CuCrZr

Received: 15 March 2022 Published: 14 September 2022

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	LI Yuxing
	YAO Pingping
	LI Zhuan
	ZHOU Haibin
	WANG Xing
	ZHAO Yibo
	KANG Li
	DENG Minwen

Cite this article:

LI Yuxing,YAO Pingping,LI Zhuan, et al. Deposition characteristics and wear mechanism of CuCrZr electromagnetic launch rail[J]. Materials Science and Engineering of Powder Metallurgy, 2022, 27(4): 409-418.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2022023 OR http://pmbjb.csu.edu.cn/EN/Y2022/V27/I4/409

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