晶化特性的影响
(1. 哈尔滨工业大学 材料科学与工程学院， 哈尔滨 150001;
2. 哈尔滨工程大学 航天工程系， 哈尔滨 150001)
摘 要: 利用电弧熔炼及铜模快速铸造的方法制备Zr41.2Ti13.8Cu12.5Ni10Be22.5大块非晶合金， 通过电解丙三醇和磷酸的电化学法向大块非晶中充入氢。 测试了大块非晶态合金中充入氢的含量及体积变化规律，采用XRD， DSC技术研究了氢对大块非晶的晶化特征的影响。 结果表明： Zr41.2Ti13.8Cu12.5Ni10Be22.5大块非晶可充入的氢与金属的摩尔比为0.92， 体积膨胀3.5%; 随着氢含量的增加， 玻璃转变温度和晶化温度稍有提高， 并使结晶过程不同阶段的放热峰变弱。
关键字: 大块非晶； 氢化； 晶化； 锆基合金
（1. School of Materials Science and Engineering,
Harbin Institute of Technology,Harbin 150001, China;
2. Department of Astronautics Engineering,
Harbin Engineering University, Harbin 150001, China）
Abstract:The Zr41.2Ti13.8Ni10Cu12.5Be22.5 bulk amorphous alloy was prepared by arc-melting and rapid casting into a copper mould. Hydrogen charging was performed electrochemically in glycerine-phosphoric acid electrolyte. The content of hydrogen charged and the variation of the amorphous samples in the volume were measured. The effects of hydrogen on the crystallization characteristics of the amorphous alloy were studied by means of X-ray diffraction (XRD), differential scanning calorimetry (DSC). The results show that: the mole ratio of the hydrogen charged to the metals is 0.92. The hydrogen makes the metals expand to 3.5% in the volume. With the hydrogen content increasing, both the glass transition temperature and the crystallization temperature slightly increase within certain extent, and some exothermic peaks weaken at different stages of crystallization.
Key words: bulk amorphous; hydrogenation; crystallization; Zr-based ally
