摘要
采用单辊旋淬法制备了Al88Ni4Y6Er2非晶合金,用X射线衍射(XRD)、差示扫描量热(DSC)测试手段研究了Al88Ni4Y6Er2非晶合金晶化过程中的动力学性能。发现Al88Ni4Y6Er2非晶合金晶化温度Tx与升温速率通过Vogel-Fulcher-Tammnann公式拟合后满足非线性关系。并根据Tx01≈Tk这种近似关系,求得Al88Ni4Y6Er2非晶合金的Kauzmann温度Tk为401 K,由此推断出VFT温度T0不大于401 K。
Al88Ni4Y6Er2 amorphous alloys were pre- pared by melt-spinning method. Kinetic behaviour of the Al88Ni4Y6Er2 alloy was studied by Kissinger and Vogel-Fulcher-Tammnann （VFT） analysis. The heat- ing rate dependence of crystallization temperature of the Al88Ni4Y6Er2 ErE amorphous alloy was found to follow the VFT nonlinear relationship rather than Kissinger＇s linear fitting. Due to T0≈ T1, ideal glass transition and crystallization temperatures were obtained from the extension of VFT analysis. The value of Tk was 401 K, and maximum of To was not larger 401 K.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2009年第4期505-509,共5页
Chinese Journal of Rare Metals
基金
黑龙江省自然科学基金资助项目(QC06C042)
黑龙江省教育厅科学技术研究项目(11511125)资助
关键词
铝基非晶合金
晶化激活能
非线性关系
Al-hased amorphous alloy
crystallization activation energy
nonlinear relationship
