【摘要】 介绍了NH4 Cl对TiAl基合金渗氮的影响以及渗氮后其渗层的组织特点。结果表明 ,在一定的温度和时间范围内 ,NH4 Cl对TiAl基合金渗氮有显著的催化作用 ,主要表现在渗层厚度的增加、渗氮速率的提升和合金表面显微硬度值的增大。更多还原

【Abstract】 The effect of NH 4Cl on the nitridation of intermetallic compound TiAl was investigated. It is showed that NH 4Cl has a remarkable catalytical effect on the nitridation of TiAl based alloy. The addition of NH 4Cl can increase the thickness of the nitrided layer, the rate of the nitriding process and the surface hardness of the nitrided alloys.更多还原