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Academy of Armored Forces Engineering, Beijing 100072, China
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Academy of Armored Forces Engineering, Beijing 100072, China
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National Natural Science Foundation of China (50901089); National Key Laboratory for Remanufacturing under Grant (9140C850207100C8506)

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    摘要:

    通過對(duì)不同Mo含量的CrMoN復(fù)合涂層進(jìn)行低溫離子滲硫處理獲得CrMoN/MoS2復(fù)合涂層，并對(duì)其組織結(jié)構(gòu)及力學(xué)性能進(jìn)行研究。掃描電鏡分析顯示出CrMoN復(fù)合涂層表面形貌比較致密，晶粒較大，而經(jīng)過滲硫處理后的CrMoN/MoS2復(fù)合涂層呈現(xiàn)了疏松的顆粒狀的形貌。由于滲硫過程是非反應(yīng)成核擴(kuò)散過程，期間沒有發(fā)生擇優(yōu)生長，故晶粒尺寸受到抑制。對(duì)滲硫過程中可能發(fā)生的反應(yīng)進(jìn)行熱力學(xué)計(jì)算，推斷復(fù)合涂層中的Mo單質(zhì)和MoNx均可與S元素發(fā)生反應(yīng)生成MoS2，通過對(duì)CrMoN/MoS2復(fù)合涂層表面元素的化合價(jià)態(tài)進(jìn)行分析，可知MoS2主要來源于MoNx與S發(fā)生的置換反應(yīng)。納米硬度測試結(jié)果表明，滲硫處理后的CrMoN復(fù)合涂層的納米硬度和彈性模量都得到提高，力學(xué)性能得到提升。

    Abstract:

    CrMoN/MoS2 composite coatings were prepared on the surfaces of the CrMoN composite coatings with different Mo contents by means of a low temperature ion sulfurizing process. The structural and mechanical properties of these coatings as a function of Mo content have been studied. SEM analysis shows that the CrMoN coating reveals a dense and compact surface structure, the CrMoN/MoS2 composite coatings display loose grain structures; In the sulfurizing process, a preferential growth does not happen, the sulfide size is inhibited, The products of the reaction between MoNx and S are the main origin of MoS2.Nanoindentation test shows that the hardness and Young’s modulus of CrMoN/MoS2 coatings are higher than that of CrMoN composite coatings.

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底月蘭,張 平,蔡志海,楊 臻,李 奇,沈 維. Academy of Armored Forces Engineering, Beijing 100072, China[J].稀有金屬材料與工程,2014,43(2):264~268.[Di Yuelan, Zhang Ping, Cai Zhihai, Yang Zhen, Li Qi, Shen Wei. Academy of Armored Forces Engineering, Beijing 100072, China[J]. Rare Metal Materials and Engineering,2014,43(2):264~268.]
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  • 收稿日期:2013-03-25
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  • 在線發(fā)布日期: 2014-06-03
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