卢金斌,彭竹琴,马明星,李俊魁,齐振东,贺亚勋.HT250 铸铁表面等离子合金化 AlCoCrCuFex MnNiCx高熵合金复合涂层[J].表面技术,2015,44(9):13-17,55.
LU Jin-bin,PENG Zhu-qin,MA Ming-xing,LI Jun-kui,QI Zhen-dong,HE YA-xun.Composite Coating Prepared by Plasma Alloying AlCoCrCuFexMnNiCx High-entropy Alloy on the Surface of HT250 Cast Iron[J].Surface Technology,2015,44(9):13-17,55
HT250 铸铁表面等离子合金化 AlCoCrCuFex MnNiCx高熵合金复合涂层
Composite Coating Prepared by Plasma Alloying AlCoCrCuFexMnNiCx High-entropy Alloy on the Surface of HT250 Cast Iron
投稿时间:2015-05-14  修订日期:2015-09-20
DOI:10.16490/j.cnki.issn.1001-3660.2015.09.003
中文关键词:  等离子合金化  高熵合金  显微硬度  复合涂层  σ 相  铸铁
英文关键词:plasma surface alloying  high-entropy alloys  microhardness  composite coating  σ phase  cast iron
基金项目:河南省基础与前沿技术研究项目(072300440020)
作者单位
卢金斌 苏州科技学院, 江苏 苏州 215009 
彭竹琴 中原工学院, 郑州 450007 
马明星 中原工学院, 郑州 450007 
李俊魁 中原工学院, 郑州 450007 
齐振东 中原工学院, 郑州 450007 
贺亚勋 中原工学院, 郑州 450007 
AuthorInstitution
LU Jin-bin Suzhou University of Science and Technology, Suzhou 215009, China 
PENG Zhu-qin Zhongyuan University of Technology, Zhengzhou 450007, China 
MA Ming-xing Zhongyuan University of Technology, Zhengzhou 450007, China 
LI Jun-kui Zhongyuan University of Technology, Zhengzhou 450007, China 
QI Zhen-dong Zhongyuan University of Technology, Zhengzhou 450007, China 
HE YA-xun Zhongyuan University of Technology, Zhengzhou 450007, China 
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中文摘要:
      目的 通过等离子合金化高熵合金涂层,提高铸铁表面耐磨性。 方法 采用等离子合金化法,以等摩尔比的 Al,Co,Cr,Cu,Mn,Ni 单质金属粉在 HT250 铸铁表面制备高熵合金复合涂层。 通过 SEM,EDS,XRD 等分析涂层的组织,测试涂层的显微硬度分布。 结果 由于铸铁基体少量熔化,基体中的 Fe和 C 元素进入涂层,形成了厚度约为 0. 2 mm 的 AlCoCrCuFexMnNiCx 高熵合金涂层。 从涂层表面到基材,体系的混合熵呈高熵-中熵-低熵的梯度变化。 涂层枝要由高熵合金的枝晶和枝晶间渗碳体、σ 相等组织构成,枝要有 FCC,BCC,Fe3C 及 σ 相。 涂层的显微硬度大约为 350 ~ 600HV0. 2,明显高于铸铁基体的硬度(200 ~230HV0. 2)。 结论 通过等离子合金化可以在铸铁表面形成高熵合金+碳化物的复合涂层,提高了铸铁的显微硬度,有利于铸铁表面耐磨性的提高。
英文摘要:
      Objective To improve the abrasion resistance of the surface on cast iron by plasma alloying high entropy alloy coating process. Methods High entropy alloy coating was prepared on the surface of HT250 cast iron by plasma alloying Al, Co, Cr, Cu, Mn and Ni powders in equal molar ratio. The microstructure of the coating was studied by SEM, EDS, XRD, and its microhardness distribution was tested by the microhardness tester. Results Due to melting of a small amount of iron, the atoms such as Fe and C dissolved into the coating to get AlCoCrCuFexMnNiCx, the thickness of which was about 0. 2 mm. The mixing entropy of both the composition and the microstructure of the coating distributed in a high-medium-low gradient. The microstructure of the coating was mainly composed of high-entropy alloy dendrite and interdendrite cementite and σ phase etc, and the coating contained mainly FCC, BCC, Fe3 C and σ phase. The microhardness of the coating was about 350 ~ 600HV0. 2, which was significantly higher than that of the matrix (200 ~ 230HV0. 2). Conclusion The composite coating including high entropy alloy and carbide could be formed on the surface of cast iron by plasma alloying, which improved the microhardness of the cast iron, and thus helped to improve the abrasion resistance of the surface on cast iron.
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