欢迎登录材料期刊网

材料期刊网

高级检索

利用AC-HAVF喷涂技术在水轮机叶片材料0Cr13Ni5Mo不锈钢上制备Ni67、Ni60/WC涂层,对两种涂层的微观组织及冲蚀磨损、空蚀性能进行研究.结果表明:涂层主要由Ni-Fe固溶体以及Cr0.19Fe0.7,Ni0.11,Cr26C3,CrB2等相组成,Ni60/WC涂层中还含有WC、M6C(Ni2 W4C或Fe3W3C)等硬质相;涂层与基体结合很好,两种涂层的孔隙率都很低,具有很高的结合强度和硬度;两种涂层的冲蚀磨损性能优异,磨损失重约为0Cr13Ni5Mo基体的20%,较基体有很大程度的提高,但耐空蚀性能较差,低于基体,耐空蚀性能有待提高.

参考文献

[1] 张林夫;夏维洪.空化与空蚀[M].南京:河海大学出版社,1989:3-4.
[2] 顾四行;杨天生.水机磨蚀研究与实践50年[M].北京:中国水利水电出版社,2005:3-5.
[3] Jin H W;Kim M C;Park C G.Frietion-induced solid state amorphization from non-equilibrium solid solution phase in Fe-Cr-B-Ni-Mo spray coatings[A].,2003:279-286.
[4] T. Sudaprasert;R. H. Shipway;D. G. McCartney .Sliding wear behaviour of HVOF sprayed WC-Co coatings deposited with both gas-fuelled and liquid-fuelled systems[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2003(7/12):943-949.
[5] Li H;Khor KA;Yu LG;Cheang P .Microstructure modifications and phase transformation in plasma-sprayed WC-Co coatings following post-spray spark plasma sintering[J].Surface & Coatings Technology,2005(1):96-102.
[6] Stoioa V;Ahmed R;ltsukalehi T et al.Sliding wear evaluation of hot isostatieally pressed (HIPed) thermal spray cermet coatings[J].Wear,2004,257:1103-1124.
[7] QIAO Yun-fei;Fischer T E;Dent A .The effects of fuel chemistry and feedstock powder structure on the mechanical and tribologieal properties of HVOF thermal-sprayed WC-Co coatings with very fine structures[J].Surface and Coatings Technology,2003,172:24-41.
[8] 马光,孙冬柏,樊自拴,王国刚,刘胜林,孟惠民,俞宏英.AC-HVAF喷涂Ni60/WC复合涂层组织及性能研究[J].材料热处理学报,2007(03):125-129.
[9] 潘继岗,樊自拴,孙冬柏,俞宏英,李辉勤,王旭东,孟惠民.等离子喷涂钼基非晶纳米晶复合涂层的组织和电化学特性[J].北京科技大学学报,2005(04):453-457.
[10] Verstak A;Baranovski V.Deposition of carbides by activated combustion HVAF spraying[A].,2004:551-555.
[11] john R Blak;Giles S Kcen;Robert P Tong .Acoustic oavitation:the fluid dynamics of non-spherical bobbles[J].Philosophical Transactions Of the Royal Society of London Series A,1999,357:251-267.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%