7A09超高强度铝合金超音速火焰喷涂WC涂层
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摘要
以7A09超高强铝合金为基体,采用超音速火焰喷涂技术(HVAF)将WC粉末喷涂在基材表面,对不同喷距制备的涂层的结合强度,物相组成,微观形貌进行研究。结果表明,不同喷涂制备的涂层结合强度均较好,物相组成差异不明显,喷距在180 mm时孔隙率较低,显微硬度较高。
Coating was prepared by spraying WC powder on 7 A09 high strength aluminum alloy surface by high-velocity-air-fuel( HVAF)technique.The bonding strength,phase composition and microstructure of the coatings prepared with different spraying distances were investigated.The results show that the bonding strength of the coatings prepared by different spraying is good,the phase composition difference of the coatings is not obvious,the porosity is lower and the microhardness is higher at the spraying distance of 180 mm.
Coating was prepared by spraying WC powder on 7 A09 high strength aluminum alloy surface by high-velocity-air-fuel( HVAF)technique.The bonding strength,phase composition and microstructure of the coatings prepared with different spraying distances were investigated.The results show that the bonding strength of the coatings prepared by different spraying is good,the phase composition difference of the coatings is not obvious,the porosity is lower and the microhardness is higher at the spraying distance of 180 mm.
引文
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[7]苏义祥,张志坚,邱晓来,等.Cr3C2对45钢表面超音速火焰喷涂制备的Ni基合金涂层热态抗磨损性能的影响[J].材料导报,2018,32(6):899-904.Su Yixiang,Zhang Zhijian,Qiu Xiaolai,et al.Effect of Cr3C2addition on thermal wear resistant performance of high velocity oxygen fuel sprayed nickel-based alloy coating on 45 steel substrate[J].Materials Review,2018,32(6):899-904.
[8]张锐,刘多鹏,国礼杰.超音速火焰喷涂铜基Ni CrAlY涂层的高温性能[J].电镀与涂饰,2017,36(10):548-551.Zhang Rui,Liu Duopeng,Guo Lijie.High-temperature performance of copper-based NiCrAlY coating prepared by high-velocity oxygen fuel spraying[J].Electroplating and finishing,2017,36(10):548-551.
[2]Ji Hongzhi,Yuan Lin,Shan Debin.Effect of microstructure on thermal expansion coeffcient of 7a09 aluminum alloy[J].Journal of Materials Science&Technology,2011,27(9):797-801.
[3]李勇,李太江,李聚涛,等.HVAF和HVOF喷涂WC-CoCr涂层的组织性能对比[J].热力发电,2015,44(4):96-99.Li Yong,Li Taijiang,Li Jutao,et al.Microstructure and properties of WC-CoCr coatings sprayed by HVAF and HVOF[J].Thermal Power Generation,2015,44(4):96-99.
[4]刁望勋,王志雄,高俊国,等.不同工艺粉末对超音速火焰喷涂WC-10Co-4Cr涂层性能的影响[J].航空材料学报,2013,33(3):39-45.Diao Wangxun,Wang Zhixiong,Gao Junguo,et al.Effects of different process powders on properties of supersonic flame sprayed WC-10Co-4Cr coatings[J].Journal of Aviation Materials,2013,33(3):39-45.
[5]曹玉霞.超音速火焰喷涂Ni CoCrAlY/Al2O3复合涂层的抗氧化性能[J].金属热处理,2015,40(8):88-91.Cao Yuxia.Oxidation resistance of high velocity oxygen fuel sprayed Ni CoCrAlY/Al2O3composite coating[J].Heat Treatment of Metals,2015,40(8):88-91.
[6]杨伟华,吴云萍,洪晟,等.超音速火焰喷涂WC-10Co-4Cr涂层的微观组织与摩擦磨损性能[J].材料工程,2018,46(5):120-125.Yang Weihua,Wu Yuping,Hong Sheng,et al.Microstructure,friction and wear properties of HVOF sprayed WC-10Co-4Cr coating[J].Journal of Materials Engineering,2018,46(5):120-125.
[7]苏义祥,张志坚,邱晓来,等.Cr3C2对45钢表面超音速火焰喷涂制备的Ni基合金涂层热态抗磨损性能的影响[J].材料导报,2018,32(6):899-904.Su Yixiang,Zhang Zhijian,Qiu Xiaolai,et al.Effect of Cr3C2addition on thermal wear resistant performance of high velocity oxygen fuel sprayed nickel-based alloy coating on 45 steel substrate[J].Materials Review,2018,32(6):899-904.
[8]张锐,刘多鹏,国礼杰.超音速火焰喷涂铜基Ni CrAlY涂层的高温性能[J].电镀与涂饰,2017,36(10):548-551.Zhang Rui,Liu Duopeng,Guo Lijie.High-temperature performance of copper-based NiCrAlY coating prepared by high-velocity oxygen fuel spraying[J].Electroplating and finishing,2017,36(10):548-551.