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题名: Deposition of Phase-pure Cr2AlC Coating by DC Magnetron Sputtering and Post Annealing Using Cr-Al-C Targets with Controlled Elemental Composition but Different Phase Compositions
作者: Li, YM;  Zhao, GR;  Qian, YH;  Xu, JJ;  Li, MS
发表日期: 2018-3-1
摘要: Polycrystalline Cr2AlC coatings were prepared on M38G superalloy using a two-step method consisting of magnetron sputtering from Cr-Al-C composite targets at room temperature and subsequent annealing at 620 degrees C. Particularly, various targets synthesized by hot pressing mixture of Cr, Al, and C powders at 650-1000 degrees C were used. It was found that regardless of the phase compositions and density of the composite targets, when the molar ratio of Cr:Al:C in the starting materials was 2:1:1, phase-pure crystalline Cr2AlC coatings were prepared by magnetron sputtering and post crystallization. The Cr2AlC coatings were dense and crack-free and had a duplex structure. The adhesion strength of the coating deposited on M38G superalloy from the 800 degrees C hot-pressed target and then annealed at 620 degrees C for 20 h in Ar exceeded 82 + 6 MPa, while its hardness was 12 +/- 3 GPa. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Li, YM,Zhao, GR,Qian, YH,et al. Deposition Of Phase-pure Cr2alc Coating By Dc Magnetron Sputtering And Post Annealing Using Cr-al-c Targets With Controlled Elemental Composition But Different Phase Compositions[J]. Journal Of Materials Science & Technology,2018,34(3):466-471.

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