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采用激光熔覆技术在铝合金表面制备SiC颗粒增强的Ni基合金复合涂层,其中SiC粉末采用预置和同步送粉两种方法.试验结果表明,在激光功率P=1~2.5 kW、光斑直径d=3~5 mm、扫描速度v=2~3 mm/s工艺条件下,预置SiC粉末厚度1 mm或送粉量mp=15 g/min,可以获得表面平、无裂和界面结合较好的熔覆层.

参考文献

[1] Yang Y. .Microstructure and properties of laser-clad high-temperature wear-resistant alloys[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,1999(1/2):19-23.
[2] L. Shepeleva;B. Medres;W. D. Kaplan;M. Bamberger;A. Weisheit .Laser cladding of turbine blades[J].Surface & Coatings Technology,2000(1/3):45-48.
[3] Powell J.Surface Engineering With Laser[J].Metal Society,1995(05):17.
[4] Hu C.;Baker TN. .LASER PROCESSING TO CREATE IN-SITU AL-SICP SURFACE METAL MATRIX COMPOSITES[J].Journal of Materials Science,1995(4):891-897.
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