ZrCo和Zr_(0.7)Hf_(0.3)Co合金中氦泡演化和氦热释放研究  

Helium Bubble Evolution and Thermal Helium Release Behavior in ZrCo and Zr_(0.7)Hf_(0.3)Co Alloys

作　　者：彭丽霞[1] 赖新春[1] 蒋春丽[1] Peng Lixia;Lai Xinchun;Jiang Chunli(Science and Technology on Surface Physics and Chemistry Laboratory,Jiangyou 621908,China)

机构地区：[1]表面物理与化学重点实验室,四川江油621908

出　　处：《稀有金属材料与工程》2018年第9期2749-2754,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(11105127)

摘　　要：采用混合能量离子注入法在ZrCo及Zr_(0.7)Hf_(0.3)Co合金中引入氦,利用透射电镜观察氦泡形貌随贮存时间的演化。结果表明Zr_(0.7)Hf_(0.3)Co中氦泡平均尺寸比ZrCo更小,随贮存时间的延长,两者均被观察到氦泡的合并与长大。利用氦热释放谱研究贮存时间对氦热释放行为的影响,当贮存时间达到105d时,ZrCo中氦的总释放量和在较低温度下的释放分数均减少;而Zr_(0.7)Hf_(0.3)Co合金在贮存的175d内,较低温度下释放分数逐渐增加,总释放量无明显变化,这表明Zr_(0.7)Hf_(0.3)Co比ZrCo具有更优异的固氦性能。Helium was introduced into ZrCo and Zr0.7Hf0.3Co alloys by mixed energy ion implantation.The evolution of helium bubble morphology with storage time was observed by transmission electron microscope（TEM）.Results show that the average size of helium bubbles in Zr0.7Hf0.3Co alloy is smaller than that of ZrCo.The coalescence and growth of helium bubbles are observed in both of them with storage time increasing.The effect of storage time on the thermal helium desorption behavior was investigated by thermal desorption spectroscopy（TDS）.Results show that in ZrCo alloy the helium release fraction in lower temperature range decreases sharply and the total helium desorption capacity decreases with the storage time reaching 105 d.While in the case of Zr0.7Hf0.3Co,the helium release fraction in a lower temperature range gradually increases and the total desorption capacity of helium is almost constant during the storage period of 175 d.It indicates that Zr0.7Hf0.3Co alloy has more superior ability to contain helium than ZrCo alloy.

关 键 词：ZrCo Zr0.7Hf0.3Co 合金 氦泡 氦热释放谱 

分 类 号：TG146.4[一般工业技术—材料科学与工程] TL64[金属学及工艺—金属材料]