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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Ti36Zr40Ni20Pd4准晶的热稳定性与室温储氘性能
DOI: DOI:10.3724/SP.J.1037.2009.00821, PP. 629-633
Keywords: Ti-Zr-Ni-Pd合金,准晶,氘,催化
Abstract:
在Ti40Zr40Ni20准晶合金中掺Pd制备了Ti36Zr40Ni20Pd4准晶合金,利用X射线衍射(XRD)、金相(OM)、光电子能谱(XPS)、气固反应等对其组织结构和吸氘特性进行了研究.结果表明,在吸铸态下该合金形成了二十面体准晶相,准晶格常数为0.5174nm.其热力学稳定性较差,约400℃时转变为tI-Zr2Ni与C14-TiZrNiPd晶体相.室温下,其吸氘能力为11.0mmol/g(相当于2.2%的吸氢质量分数),吸氘速率达到0.030s-1,准晶结构不变但准晶格膨胀5.5%.添加的Pd起到催化作用,与初始合金相比,Ti36Zr40Ni20Pd4准晶合金的活化与储氘能力明显提高.
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