Pd_(71.5)Cu_(12)Si_(16.5)金属玻璃的氢相关性能（英文）  

Hydrogen-Related Properties of the Pd_(71.5)Cu_(12)Si_(16.5) Metallic Glass

作　　者：杜晓清[1] 叶小球[1] 张桂凯[1] 任清波[1] Du Xiaoqing;Ye Xiaoqiu;Zhang Guikai;Ren Qingbo(Institute of Materials,China Academy of Engineering Physics,Mianyang 621908,China)

机构地区：[1]中国工程物理研究院材料研究所,四川绵阳621908

出　　处：《稀有金属材料与工程》2018年第12期3629-3633,共5页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(21401173);National Magnetic Confinement Nuclear Fusion Program(2015GB109002)

摘　　要：通过电弧熔炼、铜辊甩带的方法制备了Pd_(71.5)Cu_(12)Si_(16.5)金属玻璃的宽带样品。通过常规X射线衍射仪和短波长X射线应力分析仪的X射线衍射谱确定了样品的完全非晶态结构。在室温、100kPa压力条件下,对样品进行了多次的吸、放氢循环实验。经过10次以上的循环后,样品没有发生破坏,表现出良好的抗氢脆性能。通过气体直接渗透的方法进一步测试了Pd_(71.5)Cu_(12)Si_(16.5)金属玻璃及其同成分晶态合金的氢渗透性能。在金属玻璃的过冷液相区温度范围内,其氢渗透率明显高于晶态相,这一结果由金属玻璃在该区间内的等温保持引入了更多的自由体积进行解释。The Pd71.5Cu12Si16.5 metallic glass was synthesized as wide ribbons by arc melting and copper roller spinning. The structures were determined by X-ray diffraction patterns using the conventional X-ray diffractometer and short wavelength X-ray stress analyzer, and the fully glassy state of the ribbons is confirmed. Multiple hydrogen absorption and desorption cycles at room temperature under 100 k Pa were carried out on the samples. No destruction after more than 10 cycles is observed, which demonstrates good hydrogen embrittlement resistance. The hydrogen permeation properties of the Pd71.5Cu12Si16.5 metallic glass and its crystallized counterpart were further tested using a direct permeation method. In the supercooled liquid region, the hydrogen permeation rate is obviously higher for the metallic glass form, which could be explained by the increasing free volumes introduced during isothermal stage in this range.

关 键 词：金属玻璃 非晶态材料 X射线衍射 氢脆 氢渗透性能 

分 类 号：TG139.8[一般工业技术—材料科学与工程]