中文摘要：

采用非等温差示扫描量热法（DSC）研究了Co基非晶合金的晶化动力学.结果显示：随着升温速率的增加,特征温度Tg,Tx,Tp向高温区移动,且玻璃转变逐渐明显,过冷液相区逐渐加宽,表明该系列合金的玻璃化转变和晶化均具有动力学效应.用Kissinger方程计算了合金系的玻璃转变和晶化的表观激活能,发现与常规Co基非晶合金相比,具有强玻璃形成能力的Co基非晶合金的晶化激活能明显增大,由此说明该类非晶合金具有更高的非晶稳定性.

英文摘要：

The crystallization kinetics of the （ Co0. 89 Fe0. 057 Nb0. 053 ） 100 -x （ B0. 8 Si0. 2 ）, bulk amorphous alloy was investigated by differential scanning calorimetry （DSC） under nonisothermal conditions. The results showed that the characteristic temperatures （ Tg, Tx, Tp ） of （ Co0. 89 Fe0. 057 Nb0. 053 ） 100-x （ B0.8 Si0. 2 ） x shifted to higher ones with the increase of heating rate, and the supercooled liquid region was widened. Therefore, both the glass transition and crystallization of （Co0. 89Fe0.057 Nb0.053 ）100-x （B0.8Si0.2）x had kinetic effects. The activation energy of crystallization and glass transition of alloys were investigated by Kissinger equation. With the increase of B and Si elements in the alloy, the glass transition activation energy decreased, and the crystallization activation energy increased, which resulted in a higher stability of amorphous alloy.