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超音速火焰噴涂WC-12Co、WC-10Co4Cr和Cr3C2-25NiCr涂層在不同介質(zhì)中摩擦行為研究
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1.江西理工大學(xué);2.崇義章源鎢業(yè)股份有限公司

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國家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃項(xiàng)目(202010407014)；江西省教育廳自然科學(xué)基金面上項(xiàng)目(GJJ200807)；江西省主要學(xué)術(shù)和技術(shù)帶頭人培育計(jì)劃青年人才項(xiàng)目(20212BCJ23005)


Friction Behavior of WC-12Co、WC-10Co4Cr and Cr3C2-25NiCr coatings under different media*
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National innovation and entrepreneurship training program for college students (202010407014); General project of Natural Science Foundation of Jiangxi Provincial Department of Education (gjj200807); Young talent project of Jiangxi Province"s major academic and technical leaders cultivation program (20212bcj23005)

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    摘要:

    為了研究硬面涂層在不同介質(zhì)中的摩擦行為，以WC-12Co、WC-10Co4Cr和Cr3C2-25NiCr硬面材料為原料，采用超音速火焰噴涂制備得到了三種不同成分的硬面涂層。通過顯微硬度計(jì)、摩擦磨損儀和掃描電鏡等對(duì)涂層性能分析，結(jié)果表明，涂層中的孔隙率和粘結(jié)相的含量密切相關(guān)，當(dāng)粘結(jié)相含量為12wt.%（Co）時(shí)，其孔隙度為1.11%；粘結(jié)相含量為14wt.%（CoCr）時(shí)，其孔隙度為0.98%；粘結(jié)相含量為25wt.%（NiCr）時(shí)，其孔隙度降低為0.92%。空氣中，WC-10Co4Cr的硬度最高，其摩擦系數(shù)最?。籆r3C2-25NiCr的硬度最小，其摩擦系數(shù)最大。1mol/L HCl的環(huán)境中，NiCr的耐腐蝕性能最好，使Cr3C2-25NiCr涂層的摩擦系數(shù)穩(wěn)定；而純Co和CoCr的耐腐蝕性能較差，使WC-10Co4Cr和WC-12Co涂層的摩擦系數(shù)呈現(xiàn)出波浪狀的變化規(guī)律。1mol/L NaOH的環(huán)境的摩擦過程中，硬質(zhì)相的腐蝕會(huì)使涂層表面的硬度下降，使摩擦系數(shù)增加。

    Abstract:

    In order to study the friction behavior of hard surface coatings under different media, the coatings were prepared by HVOF with WC-12Co, WC-10Co4Cr and Cr3C2-25NiCr materials as raw materials. The properties of the coatings were analyzed by micro-hardness tester, wear tester, scanning electron microscope and so on. The results showed that the porosity of the coating was closely related to the content of the binder phase. In air, WC-10Co4Cr had the highest hardness and the lowest friction coefficient, while Cr3C2-25NiCr had the lowest hardness and the highest friction coefficient. In the environment of 1mol/L HCl, the best corrosion resistance of NiCr binder made the friction coefficient of Cr3C2-25NiCr coating stable, and the poor corrosion resistance of pure Co and CoCr made the friction coefficient of WC-10Co4Cr and WC-12Co coatings with high and low fluctuations. In the friction process under 1mol/L NaOH environment, the corrosion of hard phase could reduce the hardness and increase the friction coefficient.

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引用本文

羅鑫,王韶毅,洪源昆,吳佳逸,駱宛卿,羊求民.超音速火焰噴涂WC-12Co、WC-10Co4Cr和Cr3C2-25NiCr涂層在不同介質(zhì)中摩擦行為研究[J].稀有金屬材料與工程,2022,51(12):4682~4688.[Xin Luo, Shaoyi Wang, Yuankun Hong, Jiayi Wu, Wanqing Luo, Qiumin Yang. Friction Behavior of WC-12Co、WC-10Co4Cr and Cr3C2-25NiCr coatings under different media*[J]. Rare Metal Materials and Engineering,2022,51(12):4682~4688.]
DOI：10.12442/j. issn.1002-185X.20211034

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  • 收稿日期:2021-11-23
  • 最后修改日期:2022-02-21
  • 錄用日期:2022-03-07
  • 在線發(fā)布日期: 2023-01-19
  • 出版日期: 2022-12-30