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

IMR OpenIR

	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
	2012
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	263 页码:457-464
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.
部门归属	[li, j. j.; qian, y. h.; liu, z. m.; li, m. s.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [li, j. j.; liu, z. m.] chinese acad sci, grad sch, beijing 100039, peoples r china. [niu, d.; zhang, m. m.] northeast univ, shenyang 110016, peoples r china.;li, ms (reprint author), 72 wenhua rd, shenyang 110016, peoples r china.;mshli@imr.ac.cn
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
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60056
专题	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.