爆炸喷涂Cr3C2-NiCr涂层及其对2Cr10MoVNbN钢疲劳性能的影响
Detonation Spraying Cr3C2-NiCr Coatings and Its Effect on Fatigue Property of 2Cr10MoVNbN Steel Substrate
摘 要
采用爆炸喷涂方法在2Cr10MoVNbN钢基体表面制备了Cr3C2-NiCr涂层,利用光学显微镜、扫描电镜、X射线衍射仪、能谱仪、显微硬度计、电子拉伸试验机、X射线应力仪、疲劳试验机等分析测试了涂层的缺陷、显微硬度、断裂韧度、结合力、残余应力、疲劳性能等,主要研究了涂层对基体疲劳性能的影响.结果表明:在2Cr10MoVNbN钢基体上采用爆炸喷涂方法制备的Cr3C2-NiCr涂层的孔隙率为0.5%,表面硬度为921 HV,断裂韧度为3.67 MPa·m1/2 ,涂层与基体的结合强度为63 MPa,涂层表面、涂层/基体界面处均处于压应力状态;爆炸喷涂Cr3C2-NiCr涂层明显降低了2Cr10MoVNbN钢基体的疲劳性能,在应力幅小于500 MPa时,与基体试样相比,涂层试样的疲劳寿命减少了75%以上,疲劳强度下降了134.7 MPa,涂层试样的疲劳裂纹源出现在涂层/基体界面的Al2O3夹杂物处.
爆炸喷涂
Cr3C2-NiCr涂层
fatigue property
detonation spraying
Cr3C2-NiCr coating
Abstract
Cr3C2-NiCr coating was deposited on 2Cr10MoVNbN steel substrate by detonation spraying method.The defect,micro-hardness,fracture toughness,adhesion to the substrate and residual stress for as-sprayed coating were respectively investigated by means of optical microscopy(OM),scanning electron microscopy(SEM),X-ray diffraction (XRD),energy dispersive spectrometer(EDS),micro-hardness tester,electronic tensile testing machine and X-ray strain apparatus.The effect of Cr3C2-NiCr coating on fatigue property of 2Cr10MoVNbN steel was studied.The results show that the porosity of the coating was 0.5%,the surficial hardness was 921 HV,the fracture toughness was 3.67 MPa·m1/2,and the adhesion to substrate was 63 MPa.Both surface and coating-substrate interface showed compressive residual stress.The Cr3C2-NiCr coating led to a significant decrease of fatigue property of the 2Cr10MoVNbN steel substrate.When the stress amplitude was less than 500 MPa,the reduction of fatigue life was more than 75% and the fatigue strength decreased about 134.7 MPa.Fatigue origins of the as-sprayed sample with the presence of Al2O3 particles were at the coating-substrate interface.
中图分类号 TG174.442
所属栏目 材料性能及其应用
基金项目
收稿日期 2008/5/26
修改稿日期 2008/11/11
网络出版日期
作者单位点击查看
备注陈昭运(1962-),女,黑龙江哈尔滨人,教授.
引用该论文: CHEN Zhao-yun,MENG Xiang-hong,LI Jian-ming. Detonation Spraying Cr3C2-NiCr Coatings and Its Effect on Fatigue Property of 2Cr10MoVNbN Steel Substrate[J]. Materials for mechancial engineering, 2009, 33(6): 85～89
陈昭运,孟祥红,李建明. 爆炸喷涂Cr3C2-NiCr涂层及其对2Cr10MoVNbN钢疲劳性能的影响[J]. 机械工程材料, 2009, 33(6): 85～89
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】MURTHY J K N,BYSAKH S,GOPINATH K,et al.Microstructure dependent erosion in Cr3C2-20(NiCr) coating deposited by a detonation gun[J].Surface and Coatings Techno-logy,2007,202(1):1-12.
【2】闵小光,夏光明,严淑群,等.30000KW级特大功率烟气轮机叶片防护涂层的研究[J].湖南冶金,2005,33(1):3-8.
【3】王俊,张立,李克,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.
【4】PICAS J A,FORN A,IGARTUA A,et al.Mechanical and tribological properties of high velocity oxy-fuel thermal sprayed nanocrystalline CrC-NiCr coatings[J].Surface and Coatings Technology,2003,174/175:1095-1100.
【5】JI Gang-chang,LI Chang-jiu,WANG Yu-yue,et al.Microstructural characterization and abrasive wear performance of HVOF sprayed Cr3C2-NiCr coating[J].Surface and Coatings Technology,2006,200(24):6749-6757.
【6】ROY M,PAUSCHITZ A,POLAK R,et al.Comparative evaluation of ambient temperature friction behaviour of thermal sprayed Cr3C2-25(Ni20Cr) coatings with conventional and nano-crystalline grains[J].Tribology International,2006,39:29-38.
【7】ESPALLARGAS N,BERGET J,GUILEMANY J M,et al.Cr3C2-NiCr and WC-Ni thermal spray coatings as alternatives to hard chromium for erosion-corrosion resistance[J].Surface and Coatings Technology,2008,202(8):1405-1417.
【8】SIDHU T S,PRAKASH S,AGRAWAL R D.Hot corrosion studies of HVOF sprayed Cr3C2-NiCr and Ni-20Cr coatings on nickel-based superalloy at 900 ℃[J].Surface and Coatings Technology,2006,201(3/4):792-800.
【9】GUILEMANY J M,ESPALLARGAS N,SUEGAMA P H,et al.Comparative study of Cr3C2-NiCr coatings obtained by HVOF and hard chromium coatings[J].Corrosion Science,2006,48:2998-3013.
【10】L PEZ CANTERA E,MELLOR B G.Fracture toughness and crack morphologies in eroded WC-Co-Cr thermally sprayed coatings[J].Materials Letters,1998,37(4/5):201-210.
【11】PUCHI CABRERA E S,BERROS-ORTIZ J A,DA-SILVA J,et al.Fatigue behavior of a 4140 steel coated with a Colmo-noy 88 alloy applied by HVOF[J].Surface and Coatings Technology,2003,172(2/3):128-138.
【2】闵小光,夏光明,严淑群,等.30000KW级特大功率烟气轮机叶片防护涂层的研究[J].湖南冶金,2005,33(1):3-8.
【3】王俊,张立,李克,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.
【4】PICAS J A,FORN A,IGARTUA A,et al.Mechanical and tribological properties of high velocity oxy-fuel thermal sprayed nanocrystalline CrC-NiCr coatings[J].Surface and Coatings Technology,2003,174/175:1095-1100.
【5】JI Gang-chang,LI Chang-jiu,WANG Yu-yue,et al.Microstructural characterization and abrasive wear performance of HVOF sprayed Cr3C2-NiCr coating[J].Surface and Coatings Technology,2006,200(24):6749-6757.
【6】ROY M,PAUSCHITZ A,POLAK R,et al.Comparative evaluation of ambient temperature friction behaviour of thermal sprayed Cr3C2-25(Ni20Cr) coatings with conventional and nano-crystalline grains[J].Tribology International,2006,39:29-38.
【7】ESPALLARGAS N,BERGET J,GUILEMANY J M,et al.Cr3C2-NiCr and WC-Ni thermal spray coatings as alternatives to hard chromium for erosion-corrosion resistance[J].Surface and Coatings Technology,2008,202(8):1405-1417.
【8】SIDHU T S,PRAKASH S,AGRAWAL R D.Hot corrosion studies of HVOF sprayed Cr3C2-NiCr and Ni-20Cr coatings on nickel-based superalloy at 900 ℃[J].Surface and Coatings Technology,2006,201(3/4):792-800.
【9】GUILEMANY J M,ESPALLARGAS N,SUEGAMA P H,et al.Comparative study of Cr3C2-NiCr coatings obtained by HVOF and hard chromium coatings[J].Corrosion Science,2006,48:2998-3013.
【10】L PEZ CANTERA E,MELLOR B G.Fracture toughness and crack morphologies in eroded WC-Co-Cr thermally sprayed coatings[J].Materials Letters,1998,37(4/5):201-210.
【11】PUCHI CABRERA E S,BERROS-ORTIZ J A,DA-SILVA J,et al.Fatigue behavior of a 4140 steel coated with a Colmo-noy 88 alloy applied by HVOF[J].Surface and Coatings Technology,2003,172(2/3):128-138.
相关信息
