Nano-Ni粉体对Fe/WC涂层组织和性能的影响
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摘要
在Fe/WC喷涂材料中添加不同量的Nano-Ni粉体,采用亚音速火焰喷涂技术在Q235基体上制备涂层,利用光学显微镜、扫描电子显微镜、X射线衍射仪等设备进行显微组织、表面形貌观察及物相分析,利用MM-W1磨损试验机和HXD-1000TM型显微硬度仪对涂层的性能进行测试.结果表明:Nano-Ni粉体可以细化涂层组织,提高涂层的致密性,随着Nano-Ni粉体添加量的增大,相应的力学性能均得到提高,在涂层形成过程中Nano-Ni粉体与喷涂材料中的其他成分形成了一些新相,如Fe-Ni固溶体和CeNi3,这些新相为改善涂层组织和提高涂层的力学性能起到积极作用.
Different amount of Nano-Ni powder was added into Fe/WC powder for spray.The coating was produced on a Q235 substrate by subsonic flame spraying.The surface morphology,microstructure and worn surface morphologies of the coating were analyzed by using optical microscopy and scanning electron microscopy.The phase composition of the coating was determined by X-ray diffraction.The wear properties of the coating were investigated on an MM-W1-wear-tester under wet friction condition.The micro-hardness of the coating was evaluated on an HXD-1000TM micro-hardness instrument.The results show that Nano-Ni powder could refine the microstructure of the coating and improve the compactness of the coating.With the increasing proportion of Nano-Ni powder,the mechanical properties of the coating were improved.In the process of the coating preparation,some new phases,such as Fe-Ni and CeNi3,were created and played an active role in improving the microstructure and the mechanical properties of the coating.
Different amount of Nano-Ni powder was added into Fe/WC powder for spray.The coating was produced on a Q235 substrate by subsonic flame spraying.The surface morphology,microstructure and worn surface morphologies of the coating were analyzed by using optical microscopy and scanning electron microscopy.The phase composition of the coating was determined by X-ray diffraction.The wear properties of the coating were investigated on an MM-W1-wear-tester under wet friction condition.The micro-hardness of the coating was evaluated on an HXD-1000TM micro-hardness instrument.The results show that Nano-Ni powder could refine the microstructure of the coating and improve the compactness of the coating.With the increasing proportion of Nano-Ni powder,the mechanical properties of the coating were improved.In the process of the coating preparation,some new phases,such as Fe-Ni and CeNi3,were created and played an active role in improving the microstructure and the mechanical properties of the coating.
引文
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[16]Fu B Y,He D Y,Zhao L D.Abrasive resistance of arc sprayedcoatings containing Fe-based amorphous phase[J].Tribology,2008,28(5):428-432(in Chinese)[傅斌友,贺定勇,赵力东.涂铁基非晶涂层的磨粒磨损性能研究[J].摩擦学学报,2008,28(5):428-432].
[17]Guo H J,Li J G,Gong T H.Effect of nanometer WC and CeO2powder on the structure and properties of ceramic coating[J].Surface Technology,2008,37(6):39-40(in Chinese)[国洪建,李建国,巩天浩.纳米WC与CeO2对陶瓷涂层组织和性能的影响[J].表面技术,2008,37(6):39-40].
[18]Zhu Z X,Xu B S,Ma S N.Tribological properties of Fe-Al/WC composite coating prepared by high velocity arc spraying[J].Tribology,2003,23(3):174-179(in Chinese)[朱子新,徐滨士,马世宁.高速电弧喷涂Fe-Al/WC复合涂层的摩擦学特性[J].摩擦学学报,2003,23(3):174-179].
[2]Li F P,Wang Y Z,Wang W.Research on the properties ofHVOF Ni-based coatings[J].China Surface Engineering,2006,19(4):25-28(in Chinese)[李方坡,王引真,王纬.HVOF喷涂Ni基涂层性能的研究[J].中国表面工程,2006,19(4):25-28].
[3]Yao S H,Su Y L,Gao W X,et al.Tribological performance ofnano-structured WC reinforced Ni-based alloy HVOF coatings[J].Tribology,2008,28(1):33-38(in Chinese)[姚舜晖,苏演良,高文显,等.纳米碳化钨增强镍基合金热喷涂涂层的摩擦磨损性能研究[J].摩擦学学报,2008,28(1):33-38].
[4]Ma G,Yu Y S,Yu H Y.Investigation of microstructure andproperties of AC-HVAF sprayed Ni-based coatings[J].Transactions of Materials and Heat Treatment,2008,29(3):142-146(in Chinese)[马光,于艳爽,俞宏英.两种Ni基喷涂层微观组织及性能的研究[J].材料热处理学报,2008,29(3):142-146].
[5]Chen J M,Guo C,Yao R G,et al.Microstructure and hightemperature tribological properties of NiCr-ZrB2 compositecoating[J].Tribology,2012,32(4):313-319(in Chinese)[陈建敏,郭纯,姚润钢,等.激光熔覆NiCr-ZrB2复合涂层结构及高温摩擦学性能[J].摩擦学学报,2012,32(4):313-319].
[6]Yan Y G,Li M X,Zhang S H,et al.Effect of nano-CeO2 onmicrostructure and corrosion resistance of Ni-based alloycoating by laser-melting[J].Journal of the Chinese Rare EarthSociety,2007,25(5):620-624(in Chinese)[颜永根,李明喜,张世宏,等.纳米CeO2对Ni基合金激光熔覆层的组织与耐蚀性的影响[J].中国稀土学报,2007,25(5):620-624].
[7]Wang H F,Wang Y Z,Yao H Y.Influence of Ni on themicrostructure and wear resistance of TiC-Ni coatings preparedby reactive high velocity oxy fuel flame spraying[J].Journal ofMaterials Protection,2006,39(2):14-16(in Chinese)[王海芳,王引真,姚海玉.Ni对TiC-Ni超音速火焰喷涂层组织和耐磨性的影响[J].材料保护,2006,39(2):14-16].
[8]Li F P,Wang Y Z,Sun Y X,et al.Effect of nickel content onmicrostructure and properties of TiC-TiB2-Ni coatings[J].Heat Treatment of Metals,2008,33(11):74-77(in Chinese)[李方坡,王引真,孙永兴,等.Ni含量对TiC-TiB2-Ni涂层组织与性能的影响[J].金属热处理,2008,33(11):74-77].
[9]Yong Z H,Wang S Y,Li J,et al.Influence of nanometer Nipowder on properties of WC-8Ni cemented carbide[J].Journalof Materials Engineering,2004,12:56-58(in Chinese)[雍志华,汪仕元,李娟,等.纳米Ni粉对WC-8Ni硬质合金性能的影响[J].材料工程,2004,12:56-58].
[10]Zhang Z Y,Wang Z P.Effect of CeO2 on Microstructure andwear behavior of thermal spray welded NiCrWRE coatings[J].Wear,2007,9:562-567.
[11]Sharma S P,Dwivedi D K,Jain P K.Effect of La2O3 addition onthe microstructure,hardness and abrasive wear behavior of flamesprayed Ni based coatings[J].Wear,2009,267:853-859.
[12]Zhang C H,Yang H G,Zhang S,et al.Effect of cerium oxideon the microstructure and friction and wear behavior of enamelcoating[J].Tribology,2005,25(3):198-202(in Chinese)[张春华,杨洪刚,张松,等.氧化铈对搪瓷涂层组织及摩擦磨损性能的影响[J].摩擦学学报,2005,25(3):198-202].
[13]Ren J R,Kim S S.Friction and wear characteristics of plasma-sprayed Al2O3-40%TiO2 and Cr2O3 coatings on aluminumalloy[J].Tribology,2000,20(1):18-21(in Chinese)[任靖日,金石三.Al2O3-40%TiO2和Cr2O3等离子喷涂层的摩擦磨损特性[J].摩擦学学报,2000,20(1):18-21].
[14]Ren C Z,Tu G F,Li C C,et al.Reaction procedure betweenCeO2 and carbon under condition of carbon thermal reduction[J].The Chinese Journal of Nonferrous Metals,1998,8(3):511-514(in Chinese)[任存治,涂赣峰,李春材,等.碳热还原条件下二氧化铈与碳的反应过程[J].中国有色金属学报,1998,8(3):511-514].
[15]Cui Y J,Wang C L,Tang Z H.Microstructure and performanceof WC-17Co coatings fabricated by high velocity oxy-fuelspraying[J].Journal of Materials Engineering,2011,11:85-88(in Chinese)[崔永静,王长亮,汤智慧.超音速火焰喷涂WC-17Co涂层微观结构与性能研究[J].材料工程,2011,11:85-88].
[16]Fu B Y,He D Y,Zhao L D.Abrasive resistance of arc sprayedcoatings containing Fe-based amorphous phase[J].Tribology,2008,28(5):428-432(in Chinese)[傅斌友,贺定勇,赵力东.涂铁基非晶涂层的磨粒磨损性能研究[J].摩擦学学报,2008,28(5):428-432].
[17]Guo H J,Li J G,Gong T H.Effect of nanometer WC and CeO2powder on the structure and properties of ceramic coating[J].Surface Technology,2008,37(6):39-40(in Chinese)[国洪建,李建国,巩天浩.纳米WC与CeO2对陶瓷涂层组织和性能的影响[J].表面技术,2008,37(6):39-40].
[18]Zhu Z X,Xu B S,Ma S N.Tribological properties of Fe-Al/WC composite coating prepared by high velocity arc spraying[J].Tribology,2003,23(3):174-179(in Chinese)[朱子新,徐滨士,马世宁.高速电弧喷涂Fe-Al/WC复合涂层的摩擦学特性[J].摩擦学学报,2003,23(3):174-179].
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