激光熔覆原位合成TiC_p/Al复合材料

In situ synthesis of TiC_p/Al composite by using laser cladding

利用激光熔覆技术 ,在ZL10 4合金表面原位合成了TiCp/Al复合材料层。实验结果表明 ,经 2 0h混制的Al Ti C粉末 ,在激光熔覆过程中可以充分反应合成TiCp;在所形成的TiCp/Al复合材料层中 ,TiC颗粒尺寸细小 ,约 80 0nm ;经激光熔覆后的TiCp/Al复合材料层中TiC分布均匀 ,仅表层有约 2 0 μm的TiC颗粒富集区和邻近基底部分有 2 0

By using laser cladding, TiC p/Al composite has been in situ synthesized on the ZL104 alloy surface. During laser cladding, Al Ti C powder which have been milled for 20 h, could be synthesized completely as fine TiC particles which is about 800 nm in size. Except that there is a rich zone of TiC about 20 μm thick at the top and a dilute zone of TiC p about 20 μm thick near substrate, the distribution of TiC particles is uniform in the cladding layer. [