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NiCrWFeSiBCCo合金涂层的组织与耐空蚀性

夏铭, 李改叶, 王泽华, 胡亚群

夏铭, 李改叶, 王泽华, 胡亚群. NiCrWFeSiBCCo合金涂层的组织与耐空蚀性[J]. 焊接学报, 2016, 37(1): 111-114.
引用本文: 夏铭, 李改叶, 王泽华, 胡亚群. NiCrWFeSiBCCo合金涂层的组织与耐空蚀性[J]. 焊接学报, 2016, 37(1): 111-114.
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XIA Ming, LI Gaiye, WANG Zehua, HU Yaqun. Microstructure and cavitation erosion resistance of NiCrWFeSiBCCo coatings[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(1): 111-114.
Citation: XIA Ming, LI Gaiye, WANG Zehua, HU Yaqun. Microstructure and cavitation erosion resistance of NiCrWFeSiBCCo coatings[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(1): 111-114.
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NiCrWFeSiBCCo合金涂层的组织与耐空蚀性

  • 河海大学 力学与材料学院, 南京 210098

Microstructure and cavitation erosion resistance of NiCrWFeSiBCCo coatings

  • Colleye of Mechanics and Materials, Hohai University, Nanjing 210098, China

摘要

    摘要
  • 摘要: 采用超音速火焰喷涂技术,在1Cr18Ni9Ti不锈钢基体表面制备NiCrWFeSiBCCo合金涂层. 采用金相显微镜(OM)、超景深体视显微镜(SM)、扫描电镜(SEM)观察涂层的显微组织和空蚀前后表面的微观形貌;采用表面粗糙度测试仪和显微硬度测试仪对涂层表面粗糙度和显微硬度进行表征;采用X-Ray衍射仪(XRD)分析涂层的相组成;采用磁致伸缩空蚀试验仪测定涂层的空蚀性能,并与1Cr18Ni9Ti不锈钢的空蚀性能进行比较. 结果表明,采用超音速火焰喷涂(HVOF)制备的NiCrWFeSiBCCo涂层组织均匀,结构致密(平均孔隙率为0.63%),硬度为1 004 HV,NiCrWFeSiBCCo涂层的抗空蚀性能明显优于1Cr18Ni9Ti不锈钢.
    Abstract: A NiCrWFeSiBCCo coating was prepared on 1Cr18Ni9Ti steel substrate by means of high-velocity oxygen-fuel (HVOF) thermal spraying process. The Microstructure, surface morphology before and after cavitation erosion test was carried out using the optics metallographic microscope (OM), Stereoscopic microscope (SM), scanning electron microscope (SEM). The surface roughness is measured by profilometer tester. The hardness is measured by hardness tester. Phase composition of the coatings was analyzed using the X-ray diffraction (XRD). The cavitation properties of the coating is tested using the ultrasonic vibration cavitation device which is compared with 1Cr18Ni9Ti stainless steel. The results show that a uniform microstructure, dense NiCrWFeSiBCCo coating (low porosity of 0.63%) is prepared by HVOF and the NiCrWFeSiBCCo coating's microhardness is 1 004 HV. The cavitation erosion resistance of the NiCrWFeSiBC cocoating is better than that of 1Cr18Ni9Ti stainless steel.
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    • 参考文献(9)
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    [6] 王 倩, 吴玉萍, 李改叶, 等. 超音速火焰喷涂Cr3C2/NiCr涂层抗加沙空蚀性分析[J]. 焊接学报, 2013, 34(2): 35-39. Wang Qian, Wu Yuping, Li Gaiye, et al. Analysis of silt cavitation erosion resistance of Cr3C2/NiCr coating prepared by high velocity oxy-fuel thermal spraying[J].Transactions of the China Welding Institution, 2013, 34(2): 35-39.
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    [9] 程江波, 梁秀兵, 陈永雄, 等. 再制造电弧喷涂成形层的残余应力分析[J]. 焊接学报, 2008, 29(6): 17-20. Cheng Jiangbo, Liang Xiubing, Chen Yongxiong, et al. Residual stress in electric arc sprayed coatings for remanufacturing[J]. Transactions of the China Welding Institution, 2008, 29(6): 17-20.
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  • 收稿日期:  2014-04-14

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