CO_2激光辐照工艺对非晶Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9合金晶化的影响

The effects of CO_2 laser radiation technology on Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 amorphous soft magnetic alloy crystallization

在较低激光功率(40～170w)和两种扫描速度(10眦n／s，5mm／s)辐照条件下，研究了C02激光辐照工艺对非晶Fe73．5Cu1Nb3Si13．5B9合金晶化行为的影响．用穆斯堡尔谱(MS)技术对原始态和晶化后样品进行了结构分析．研究发现：非晶Fe73．5Cu1Nb3Si13．5B9表面产生了少量晶化，晶化相为Fe-Si结构；晶化量在2．1％～3．57％内，随激光功率的增加而增加．当激光功率较低时，低扫描速度对晶化的促进作用大于激光功率的作用；但是，随激光功率增大，速度的影响变弱．表面微观硬度随激光功率的增加而增加。

The effects of the CO_2 laser radiation technology on the Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 amorphous soft magnetic alloy crystallization behavior under the radiation condition when the laser power was lower(40~170W) and the laser radiated respectively at two speeds(10mm/s,5mm/s) are studied.The original and the crystallized samples have been analyzed with the aid of Mssbauer spectra.It is discovered that small amount of crystallization occurred on the surface of the Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 amorphous soft magnetic alloy,the crystallization phase being Fe-Si structure;the crystallization amounts to 2.1%~3.57%,and the amount of crystallization increases with the increase of laser power.When the laser power is lower,the low speed has more effect on the crystallization promotion than the laser power;however,with the increase of the laser power,the effect of speed becomes weaker.The surface micro-hardness increases with the increase of laser power.