以Ni76Si24(质量百分数)合金粉末为原料,利用激光熔覆技术在A3钢表面制得了组织由条状Ni2Si初生相及少量Ni2Si/Ni3Si2共晶组成的新型金属硅化物合金涂层.分析涂层显微组织并测定其在0.5 mol/l H2SO4水溶液及不同浓度NaCl水溶液中的阳极极化曲线.结果表明激光熔覆Ni2Si/Ni3Si2金属硅化物合金涂层表面平整、组织细小、与基体为完全冶金结合,同时由于涂层的组织组成相Ni2Si和Ni3Si2本身均具有极好的耐蚀性并具有快速凝固细小均匀的显微组织,该激光熔覆Ni2Si/Ni3Si2金属硅化物合金涂层在0.5 mol/l H2SO4及3.5%NaCl水溶液中均具有优良的耐蚀性能.
参考文献
| [1] | Takasugi T et al.Plastic Flow of Ni3(Si,Ti)Single Crystals[J].Acta Materialia,1989,37:3425-3436. |
| [2] | Datta M K;Pabi S K;Murty B S .ThermalStabilityofNanocrystallineNiSilicidesSynthesizedbyMechanicalAlloying[J].Materials Science and Engineering,2000,284:219-225. |
| [3] | Acker J;Bohmhammel K .Optimization of Thermodynamic Data of the Ni-Si System[J].Thermochimica Acta,1991,337:187-193. |
| [4] | JANG J S C;Tsau C H .The Effect of Niobium Additions on the Fracture of Ni-19Si-based Alloys[J].Materials Science and Engineering,1992,153:525-531. |
| [5] | Bosselet F;Viala J C et al.Solid State Solubility of Aluminum in the δ-Ni2Si Nickel Silicide[J].Materials Science and Engineering,1993,167:147-154. |
| [6] | 张松,张春华,刘常升,文効忠.铝合金表面激光熔覆NiCrBSi的空泡腐蚀性能[J].稀有金属材料与工程,2002(02):99-102. |
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