金属玻璃热力学特征温度的表征方法  

Characterization methods of thermodynamic characteristic temperature of metallic glass

作　　者：王大刚[1] 谢盛辉[1] 曾玉祥[1] 罗俊旋[1] WANG Dagang;XIE Shenghui;ZENG Yuxiang;LUO Junxuan(College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China)

机构地区：[1]深圳大学材料科学与工程学院,深圳518060

出　　处：《理化检验（物理分册）》2023年第1期24-26,46,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：深圳大学研究生教育改革研究项目(SZUGS2021JG04);深圳大学教学教改项目(JG2021002)。

摘　　要：采用DSC,DIL和DMA法分别表征了Zr_(60)Cu_(28)Al_(12)和Zr_(63.78)Cu1_(4.72)Ni_(10)Al_(10)Nb_(1.5)两种金属玻璃的热力学特征温度。结果表明:采用这3种测试方法都能有效界定金属玻璃的玻璃化转变和结晶过程;DSC和DMA法表征玻璃化转变过程比DIL法更敏感;用DSC法的转变中点、DIL法的拐点及DMA法的起始点表征金属玻璃的玻璃化转变温度所得结果相当;DSC和DIL法都能有效分离多重结晶过程,DSC法表征的结晶温度比DIL法低,而DMA法较难分辨多重结晶过程,表征的结晶温度最低。The thermodynamic characteristic temperatures of Zr_(60)Cu_(28)Al_(12)and Zr_(63.78)Cu1_(4.72)Ni_(10)Al_(10)Nb_(1.5)metallic glasses were characterized by DSC, DIL and DMA, respectively. The results show that the glass transition and crystallization processes of metallic glasses could be effectively defined by these three test methods. DSC and DMA were more sensitive than DIL in characterizing glass transition process. The glass transition temperature of metallic glasses characterized by the midpoint of DSC, the inflexion point of DIL and the starting point of DMA were similar. Both DSC and DIL could effectively separate the multiple crystallization process. The crystallization temperature characterized by DSC was lower than that by DIL, while DMA was more difficult to distinguish the multiple crystallization process, and the crystallization temperature characterized by DMA was the lowest.

关 键 词：金属玻璃 玻璃化转变 结晶 热力学特征温度 

分 类 号：TB31[一般工业技术—材料科学与工程] N33[自然科学总论] TG146.4[金属学及工艺—金属材料]