Phase formation and microstructure evolution of arc ion deposited Cr2AlC coating after heat treatment

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	Phase formation and microstructure evolution of arc ion deposited Cr2AlC coating after heat treatment
	J. J. Li ; Y. H. Qian ; D. Niu ; M. M. Zhang ; Z. M. Liu ; M. S. Li
刊名	Applied Surface Science
	2012
卷号	263 页码:457-464
关键词	Cr2AlC Coating Cathodic arc deposition Microstructure n thin-films degrees-c m(n+1)ax(n) phases thermal-stability bulk cr2alc oxidation ti evaporation corrosion behavior
ISSN号	0169-4332
中文摘要	Due to the excellent oxidation and hot corrosion resistance and matched thermal expansion coefficient to normal alloys, Cr2AlC has potential applications as high-temperature protective coating. In the present work, the preparation of Cr2AlC coating has been achieved through cathodic arc deposition method combined with heat post-treatment. It was found that the coating, deposited from Cr2AlC compound target in the unintentional heating condition, was amorphous. After annealing at 620 degrees C in Ar for 20 h, the amorphous Cr-Al-C coating happened to crystallize and transformed to crystalline Cr2AlC as the major phase. It is obvious that the formation temperature of Cr2AlC was decreased from about 1050 degrees C for sintered bulk to around 620 degrees C for the as-deposited coating, resulting from the homogeneous mixture of the Cr, Al and C at atomic level in the Cr-Al-C coating. Apart from crystalline Cr2AlC, the annealed coating also contained AlCr2 and little Cr7C3. AlCr2 formed due to the loss of C during deposition, and little Cr7C3 always existed in the sintered Cr2AlC compound target as impurity phase. (C) 2012 Elsevier B. V. All rights reserved.
原文出处	://WOS:000311217500074
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60056]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	J. J. Li,Y. H. Qian,D. Niu,et al. Phase formation and microstructure evolution of arc ion deposited Cr2AlC coating after heat treatment[J]. Applied Surface Science,2012,263:457-464.
APA	J. J. Li,Y. H. Qian,D. Niu,M. M. Zhang,Z. M. Liu,&M. S. Li.(2012).Phase formation and microstructure evolution of arc ion deposited Cr2AlC coating after heat treatment.Applied Surface Science,263,457-464.
MLA	J. J. Li,et al."Phase formation and microstructure evolution of arc ion deposited Cr2AlC coating after heat treatment".Applied Surface Science 263(2012):457-464.