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C/C復(fù)合材料表面雙層輝光等離子制備錸涂層研究
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國(guó)家自然科學(xué)基金 (51102197)


Study of Re Coating Deposited on C/C Substrate by Double-Glow Plasma
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    摘要:

    用雙層輝光等離子滲金屬技術(shù),在C/C復(fù)合材料基體表面制備了錸涂層,研究了錸涂層顯微結(jié)構(gòu)、相組成、硬度以及結(jié)合強(qiáng)度。結(jié)果表明,錸涂層致密光滑,由多晶結(jié)構(gòu)的柱狀晶粒組成,晶粒尺寸在0.5~1.5 μm之間。涂層(110)和(103)晶面發(fā)生了擇優(yōu)生長(zhǎng)。涂層HV顯微硬度為6.66±0.25 GPa。制備過(guò)程中涂層與基體發(fā)生互擴(kuò)散,界面既有機(jī)械結(jié)合又有物理結(jié)合。劃痕試驗(yàn)加載過(guò)程中,當(dāng)C/C復(fù)合材料基體由于硬度和韌性低而發(fā)生破碎后,錸涂層與基體仍結(jié)合良好。

    Abstract:

    The Re coating was deposited on C/C substrates by double-glow plasma technique. The microstructure, phases, Vickers hardness and interfacial bonding strength of the coating were studied. The results show that the Re coating is composed of poly-crystalline column structural grains with preferential growth orientation of (110) and (103) crystal plane. The Re coating is dense and smooth, and the size of grains ranges from 0.5 μm to 1.5 μm. The Vickers hardness of the Re coating is 6.66±0.25 GPa. The Re coating and C/C substrates inter-diffuses with each other during preparation and there is mechanical bonding and physical bonding in the interface. During the loading process of the scratch tests, the interfacial bonding strength between Re coating and C/C substrates is high even when the C/C substrate is broken due to the low hardness and ductility.

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華云峰,李爭(zhēng)顯,黃春良,杜繼紅,駱瑞雪. C/C復(fù)合材料表面雙層輝光等離子制備錸涂層研究[J].稀有金屬材料與工程,2012,41(11):2013~2016.[Hua Yunfeng, Li Zhengxian, Huang Chunliang, Du Jihong, Luo Ruixue. Study of Re Coating Deposited on C/C Substrate by Double-Glow Plasma[J]. Rare Metal Materials and Engineering,2012,41(11):2013~2016.]
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  • 收稿日期:2011-11-20
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