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超音速等離子噴涂WC-17Co納米涂層的性能研究
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哈爾濱工業(yè)大學(xué)先進(jìn)焊接與連接國家重點實驗室,哈爾濱工業(yè)大學(xué)先進(jìn)焊接與連接國家重點實驗室,哈爾濱工業(yè)大學(xué)先進(jìn)焊接與連接國家重點實驗室,哈爾濱工業(yè)大學(xué)先進(jìn)焊接與連接國家重點實驗室,哈爾濱工業(yè)大學(xué)先進(jìn)焊接與連接國家重點實驗室

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TG174.442

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國家自然科學(xué)基金項目（面上項目，重點項目，重大項目）


Study on Properties of Supersonic Plasma Sprayed WC-17Co nano-coating
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State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology

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    摘要:

    采用超音速等離子噴涂在0Cr13Ni5Mo不銹鋼表面制備了納米和微米WC-Co涂層，并對比了兩種涂層的孔隙率、結(jié)合強度、硬度和耐磨性。結(jié)果表明，納米涂層的致密性和結(jié)合強度均高于微米涂層，其孔隙率僅為0.56%，結(jié)合強度大于69.2 MPa；納米涂層和微米涂層的硬度是基體的3.9和3.8倍，硬度值從涂層的表面到底部逐漸增加；基體磨損為磨粒磨損 粘著磨損 層狀剝落，兩種涂層磨損均為磨粒磨損。納米涂層的孔隙率低、硬度高、表面抗壓性強使其表現(xiàn)出更優(yōu)的耐磨性。

    Abstract:

    The nano and micro WC-17Co coatings were fabricated on the 0Cr13Ni5Mo stainless steel by supersonic plasma spraying method. The porosity, adhesive strength, hardness and wear resistance of both coatings were compared. The results indicate that the porosity and adhesive strength of nano-coating (i.e., 0.56% and over 69.2 MPa) are higher than those of micro-coating. The hardness of nano-coating and micro-coating are 3.9 and 3.8 times more than that of matrix, respectively. The hardness of both coating will gradually increase from its top to bottom. The wear mechanisms of matrix were adhesive wear, abrasive wear and delamination, while the coatings only suffered adhesive wear. The lower porosity, higer hardness and stonger compressive resistance of nano-coating result in its excellent wear resistance.

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李萬青,林鐵松,宋超群,何鵬,王啟越.超音速等離子噴涂WC-17Co納米涂層的性能研究[J].稀有金屬材料與工程,2017,46(3):807~811.[Li Wanqing, Lin Tiesong, Song Chaoqun, He Peng, Wang Qiyue. Study on Properties of Supersonic Plasma Sprayed WC-17Co nano-coating[J]. Rare Metal Materials and Engineering,2017,46(3):807~811.]
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  • 收稿日期:2014-11-21
  • 最后修改日期:2015-01-10
  • 錄用日期:2015-02-06
  • 在線發(fā)布日期: 2017-05-18
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