HVAF喷涂La2O3改性WC-20Cr3C2-11NiMo涂层的耐磨耐蚀性能

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Abstract In order to improve the wear resistance, seawater corrosion resistance and seawater cavitation resistance of high-quality WC coating, WC-20Cr₃C₂-11NiMo coating modified by La₂O₃ were prepared on 0Cr13Ni5Mo substrate by HVAF. The micro-hardness, porosity, friction coefficient, friction and wear performance, seawater corrosion resistance and seawater cavitation resistance of the coatings were investigated by micro-hardness test, plane pore test, friction and wear test, electrochemical experiment and simulated seawater ultrasonic cavitation experiment. The effects of La₂O₃ on the wear resistance and corrosion resistance of WC-20Cr₃C₂-11NiMo coating were studied. The results show that the micro-hardness of the modified coatings increases to about 1 400 HV_0.2, and the average porosity of the modified coatings decreases by about 48.6%. The wear amount of the modified coatings decreases by about 33%. The friction coefficient of the modified coating decreases by 30%, and the micro-pits and micro-cracks on friction and wear surfaces of the modified coating decrease significantly. The electrochemical self-corrosion potential shifts to the right, and the electrochemical self-corrosion current density decreases significantly. The loss of cavitation mass decreases by about 20%, and the cavitation pits decreases significantly. Compared with the unmodified WC-20Cr₃C₂-11NiMo coating, La₂O₃ modified WC-20Cr₃C₂-11NiMo coating can slightly improve the hardness of the coating, the compactness, wear resistance, seawater corrosion resistance and seawater cavitation resistance are significantly improved. Besides the surface fatigue wear, the mechanism of surface friction and wear changes from severe abrasive wear to slight abrasive wear. The cavitation mechanism is mainly fluid shock wave erosion.

Key words： HVAF rare earth modification coating wear resistance corrosion resistance cavitation resistance

Received: 09 November 2020 Published: 22 March 2021

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TG174.44

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	Articles by authors
	ZHANG Kai
	LIU Wei
	ZHANG Lei
	ZHAO Jian
	FU Li
	CHEN Xiaoming

Cite this article:

ZHANG Kai,LIU Wei,ZHANG Lei, et al. Wear resistance and corrosion resistance of La₂O₃modified WC-20Cr₃C₂-11NiMo coatings sprayed by HVAF[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(1): 70-76.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I1/70

[1] SETHI A K.Studies on hard surfacing of structural steel by gas thermal spraying process[J]. Materials Today: Proceeding, 2020, 21(Pt 3): 1436-1440.
[2] 林松盛, 周克崧, 代明江. 抗冲蚀磨损涂层的研究及应用进展[J]. 材料研究与应用, 2018, 12(3): 149-155.
LIN Songsheng, ZHOU Kesong, DAI Mingjiang.Development of erosion resistant coatings on research and application[J]. Materials Research and Application, 2018, 12(3): 149-155.
[3] 李力, 魏天酬, 刘明维, 等. 冲蚀磨损机理及抗冲蚀涂层研究进展[J]. 重庆交通大学学报(自然科学版), 2019, 38(8): 70-74, 91.
LI Li, WEI Tianchou, LIU Mingwei, et al.Research progress on erosion wear mechanism and anti-erosion coatings[J]. Journal of Chongqing Jiaotong University (Natural Science), 2019, 38(8): 70-74, 91.
[4] 汪陇亮, 孙润军, 单磊, 等. CrAlN涂层海水环境腐蚀磨损行为研究[J]. 摩擦学学报, 2017, 37(5): 639-646.
WANG Longliang, SUN Runjun, SHAN Lei, et al.Tribocorrosion behaviors of CrAlN coating in seawater[J]. Tribology, 2017, 37(5): 639-646.
[5] 李健, 张永振, 彭恩高, 等. 冲蚀与气蚀复合磨损试验研究[J].摩擦学学报, 2006, 26(2): 164-168.
LI Jian, ZHANG Yongzhen, PENG Engao, et al.Experimental study on cavitations erosion[J]. Tribology, 2006, 26(2): 164-168.
[6] WANG G, HUANG Z, XIAO P, et al.Spraying of Fe-based amorphous coating with high corrosion resistance by HVAF[J]. Journal of Manufacturing Processes, 2016, 22: 34-38.
[7] CUI H, TAO K, ZHOU X L, et al.Thermal stability of nanostructured nicrc coating prepared by HVAF spraying of cryomilled powders[J]. Rare Metals, 2008, 27(4): 418-424.
[8] 伏利, 周夏凉, 陈小明, 等. HVAF喷涂WC-10Co4Cr涂层及其性能[J]. 腐蚀与防护, 2019, 40(4): 240-244, 292.
FU Li, ZHOU Xialiang, CHEN Xiaoming, et al.Properties of WC-10Co4Cr coatings sprayed by HVAF[J]. Corrosion & Protection, 2019, 40(4): 240-244, 292.
[9] LIU Y, LIU W, MA Y, et al.A comparative study on wear and corrosion behaviour of HVOF and HVAF sprayed WC-10Co-4Cr coatings[J]. Surface Engineering, 2017, 33(1): 63-71.
[10] SANSOUCY E, KIM G E, MORAN A L, et al.Mechanical characteristics of Al-Co-Ce coatings produced by the cold spray process[J]. Journal of Thermal Spray Technology, 2007, 16(5/6): 651-660.
[11] BUCHHEIT R G, MAMIDIPALLY S B, SCHMUTZ P, et al.Active corrosion protection in Ce-modified hydrotalcite conversion coatings[J]. Corrosion, 2002, 58(1): 3-14.
[12] 白杨, 刘其斌, 徐鹏, 等. 稀土含量对Ca-P陶瓷涂层组织及细胞相容性的影响[J]. 中国表面工程, 2016, 29(5): 66-71.
BAI Yang, LIU Qibin, XU Peng, et al.Effects of rare earth content on microstructure and cell compatibility of Ca-P ceramic coating fabricated by laser cladding[J]. China Surface Engineering, 2016, 29(5): 66-71.
[13] 赵坚, 陈小明, 伏利, 等. 纳米Ce改性对WC陶瓷涂层微观结构及抗磨损性能的影响[J]. 兵器材料科学与工程, 2018, 41(2): 43-46.
ZHAO Jian, CHEN Xiaoming, FU Li, et al.Effects of nano Ce modification on microstructure and wear resistance of WC ceramic coatings[J]. Ordnance Material Science and Engineering, 2018, 41(2): 43-46.
[14] 路阳. 稀土元素对Cu14AlX涂层组织和摩擦性能的影响[J]. 中国表面工程, 2012, 25(2): 49-55.
LU Yang.Effect of Ce on the microstructure and wear behavior of Cu14AlX coatings[J]. China Surface Engineering, 2012, 25(2): 49-55.
[15] MATSUMOTO M, AOYAMA K, MATSUBARA H, et al.Thermal conductivity and phase stability of plasma sprayed ZrO₂-Y₂O₃-La₂O₃ coatings[J]. Surface & Coatings Technology, 2005, 194(1): 31-35.
[16] 何科杉, 程西云, 李志华. 稀土对金属陶瓷涂层微观组织改性作用研究现状和应用进展[J]. 润滑与密封, 2009, 34(3): 105-109, 118.
HE Keshan, CHENG Xiyun, LI Zhihua.Surface modification on cermet coating microstructure by rare earths and its application development[J]. Lubrication Engineering, 2009, 34(3): 105-109, 118.
[17] WANG K L, ZHANG Q B, SUN M L, et al.Microstructure and corrosion resistance of laser clad coatings with rare earth elements[J]. Corrosion Science, 2001, 43(2): 255-267.
[18] 宣天鹏, 闵丹, 霍影. 稀土金属Y对真空熔结Ni基涂层显微组织和耐磨性的影响[J]. 摩擦学学报, 2005, 25(2): 102-106.
XUAN Tianpeng, MIN Dan, HUO Ying.Effect of rare earth metal Yttrium on microstructure and wear resistance of vacuum fusion sintered Ni-based coating[J]. Tribology, 2005, 25(2): 102-106.
[19] MOON D P.Role of reactive elements in alloy protection[J]. Materials Science & Technology, 2013, 5(8): 754-764.
[20] ZHANG Z Y, LU X C, HAN B L, et al.Rare earth effect on the microstructure and wear resistance of Ni-based coatings[J]. Materials Science & Engineering, 2006, 454(1): 194-202.