赵坚,刘伟,陈小明,毛鹏展,伏利,张磊

• 1:水利部产品质量标准研究所
• 2:水利部杭州机械设计研究所
• 3:浙江省水利水电装备表面工程技术研究重点实验室
• 4:北京科技大学新金属材料国家重点实验室

摘要(Abstract)：

采用爆炸喷涂技术在38CrMoAl钢表面制备了Cr_3C_2-25NiCr涂层,并在700、800及900℃下分别对其进行了热震试验,利用扫描电镜(SEM)、X射线衍射仪(XRD)、摩擦磨损试验机、电化学工作站等手段研究了涂层的高温氧化行为及耐腐蚀性能。结果表明:经过热震试验后,涂层中Cr_3C_2相逐渐被氧化脱碳成Cr_7C_3相,NiCr固溶相消失,转化为Cr_3Ni_2相以及NiCr_2O_4相,并出现了Cr_5O_(12)相,并且涂层因为高温氧化而出现了凹坑、微裂纹等。涂层中因氧化而产生的硬脆颗粒以及微裂纹会导致涂层的耐磨性能明显下降,破碎剥落的颗粒会成为新的磨料加剧磨损,并且涂层中能起到钝化耐腐蚀作用的Cr-O相消失,脆性破裂剥落的孔洞及微裂纹不断增加,会导致涂层的耐腐蚀性能随着热震温度的升高而逐渐降低。在700℃时,Cr_3C_2-25NiCr涂层具有良好的抗热震性能,随着热震温度进一步提高涂层的氧化行为加剧,抗热震及耐磨性能等明显降低。

关键词(KeyWords)： Cr_3C_2-25NiCr涂层;高温氧化行为;微观结构;性能

Abstract:

Keywords:

基金项目(Foundation): 浙江省科技计划项目(2018C37029);浙江省科技计划项目(2019C04019);浙江省科技计划项目(GC19E090001);浙江省科技计划项目(2018C37029)

作者(Author): 赵坚,刘伟,陈小明,毛鹏展,伏利,张磊

DOI: 10.13289/j.issn.1009-6264.2020-0262

参考文献(References)：

• [1] 杨秀从,李国禄,王海斗,等.超音速等离子喷涂NiCr-Cr3C2涂层的结构及冲蚀磨损机理[J].表面技术,2016,45(9):32-37.YANG Xiu-cong,LI Guo-lu,WANG Hai-dou,et al.Microstructure and erosion wear of supersonic plasma sprayed NiCr-Cr3C2 coatings[J].Surface Technology,2016,45(9):32-37.
• [2] 赵坚,陈小明,毛鹏展,等.爆炸喷涂Cr3C2-25NiCr涂层的微观结构及性能研究[J].材料保护,2019,52(1):5-8.ZHAO Jian,CHEN Xiao-ming,MAO Peng-zhan,et al.Microstructure and properties of Cr3C2-25NiCr coatings prepared by detonation spraying[J].Materials Protection,2019,52(1):5-8.
• [3] 乐有树,刘敏,李建雄,等.Cr3C2-NiCr 涂层的工程化应用研究[J].稀有金属材料与工程,2010,39(S1):448-450.YUE You-shu,LIU Min,LI Jian-xiong,et al.Study on application of the Cr3C2-NiCr coating[J].Rare Metal Materials and Engineering,2010,39(S1):448-450.
• [4] Su P H,Fu C S,Benedetti A V.The influence of gun transverse speed on electrochemical behaviour of thermally sprayed Cr3C2-NiCr coating in 0.5 M H2 SO4 solution[J].Electrochimical Acta,2004,49:627-634.
• [5] Matthews S,James B,Hyland M.High temperature erosion-oxidation of Cr3C2-NiCr thermal spray coating under simulated turbine conditions[J].Corrosion Science,2013,70(3):203-211.
• [6] 白杨,邢路阔,李相波,等.中性盐雾腐蚀对等离子喷涂NiCr-Cr3C2涂层摩擦磨损性能的影响[J].稀有金属材料与工程,2017,46(5):1404-1410.BAI Yang,XING Lu-kuo,LI Xiang-bo,et al.Effect of neutral salt spray corrosion on tribological properties of SPSed NiCr-Cr3C2 coatings[J].Rare Metal Materials Engineering,2017,46(5):1404-1410.
• [7] Suarez M,Bellayer S,Traisnel M,et al.Corrosion behavior of Cr3C2-NiCr vacuum plasma sprayed coatings[J].Surface and Coating Technology,2008,202(18):4566-4571.
• [8] 赵子鹏,司洪利,李忠盛,等.等离子喷涂与超音速火焰喷涂NiCr-Cr3C2涂层组织与摩擦磨损性能研究[J].表面技术,2019,48(8):225-230.ZHAO Zi-peng,SI Hong-li,LI Zhong-sheng,et al.Microstructrure and friction and wear properties of NiCr-Cr3C2 coating by APS and HVOF[J].Surface Technology,2019,48(8):225-230.
• [9] 王俊,张立,李可,等.爆炸喷涂Cr3C2-NiCr涂层及其在连铸辊上的应用[J].上海交通大学学报,2000,34(8):1018-1021.WANG Jun,ZHANG Li,LI Ke,et al.Gas detonation spray Cr3C2-NiCr coating and its application in conticaster rolls[J].Journal of Shanghai Jiao Tong University,2000,34(8):1018-1021.
• [10] 解明祥,张世宏,李明喜,等.超音速火焰喷涂 Cr3C2-25NiCr 涂层高温摩擦磨损性能[J].材料热处理学报,2012,33(S2):129-133.XIE Ming-xiang,ZHANG Shi-hong,LI Ming-xi,et al.High temperature wear resistance of HVOF sprayed Cr3C2-25NiCr coating[J].Transactions of Materlals and Heat Treatment,2012,33(S2):129-133.
• [11] 李旭强,汤鹏君,姜欣,等.20%NiCr-80%Cr3C2涂层抗热冲击和抗氧化性能研究[J].表面技术,2020,49(3):180-187.LI Xu-qiang,TANG Peng-jun,JIANG Xin,et al.Thermal shock resistance and antioxidant properties of 20%NiCr-80%Cr3C2 coating[J].Surface Technology,2020,49(3):180-187.
• [12] 沈婕,国俊丰,魏伟,等.超音速喷涂Cr3C2-25NiCr 复合涂层的组织及电化学特性研究[J].热喷涂技术,2009,1(2):48-52.SHEN Jie,GUO Jun-feng,WEI Wei,et al.Microstructure and electrochemical properties of Cr3C2-25NiCr coating by HVOF spraying[J].Thermal Spray Technology,2009,1(2):48-52.
• [13] Matthews S,Hyland M,James B.Microhardness variation in relation to carbide development in heat treated Cr3C2-NiCr thermal spray coating[J].Acta Materialia,2003,51:4267-4277.
• [14] 邝宣科,钱士强,王伟,等.不同燃料超音速火焰喷涂NiCr-Cr3C2涂层[J].材料热处理学报,2012,33(7):137-142.KUANG Xuan-ke,QIAN Shi-qiang,WANG Wei,et al.Research on NiCr-Cr3C2 coatings by high velocity oxy-fuel spraying using different fuels[J].Transactions of Materials and Heat Treatment,2012,33(7):137-142.
• [15] Tang F,Ajdelsztajn L,Schoenung J M.Influence of cryomilling on the morphology and composition of the oxide scales formed on HVOF CoNiCrAlY coating[J].Oxidation of Metals,2004,61(3):219-238.
• [16] 周小龙,曾德长,王刚,等.AC-HVAF 制备Cr3C2-25CoNiCrAlY 和Cr3C2-25NiCr 涂层的高温氧化及摩擦磨损行为[J].中国表面工程,2017,30(5):102-108.ZHOU Xiao-long,ZENG De-chang,WANG Gang,et al.High temperature oxidation and tribological behavior of Cr3C2-25CoNiCrAlY and Cr3C2-25NiCr coatings prepared by AC-HVAF[J].China Surface Engineering,2017,30(5):102-108.
• [17] Wang W.Application of a high temperature self-lubricating composite coating on steam turbine components[J].Surface and Coating Technology,2004,177:12-17.
• [18] Yin B,Liu G,Zhou H,et al.Sliding wear behavior of HVOF-sprayed Cr3C2-NiCr/CeO2 composite coating at elevated temperature up to 800 ℃[J].Tribology Letters,2010,37(2):463-475.
• [19] 纪岗昌,李长久,王豫跃,等.超音速火焰喷涂Cr3C2-NiCr涂层磨粒磨损行为[J].材料热处理学报,2002,23(4):34-38.JI Gang-chang,LI Chang-jiu,WANG Yu-yue,et al.Abrasive wear behavior of HVOF deposited Cr3C2-NiCr coating[J].Transactions of Materlals and Heat Treatment,2002,23(4):34-38.
• [20] Sidhu H S,Sidhu B S,Prakash S.Wear characteristics of Cr3C2-NiCr and WC-Co coatings deposited by LPG fueled HVOF[J].Tribology International,2010,43:887-890.
• [21] Poirier D,Legoux J G,Lima R S.Engineering HVOF sprayed Cr3C2-NiCr coatings:The effect of particle morphology and spraying parameters on the microstructure,properties,and high temperature wear performance[J].Journal of Thermal Spray Technology,2013,22(2/3):280-289.
• [22] Fu D X,Liu J N,Liu E B,et al.Thermal shock resistance of plasma sprayed multi-layered functionally graded Cr3C2-NiCr coatings[J].Materials Science Forum,2016,852:1000-1005.

文章评论(Comment)：