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预热温度和真空度对自蔓延法制备MgB2超导块材的影响
冯旺军; 夏天东; 刘天佐; 赵文军; 魏智强
2006
Source Publication稀有金属材料与工程
ISSN1002-185X
Volume35Issue:6Pages:963-965
Abstract用自蔓延(SHS)法成功制备了MgB2超导块材.B,Mg合成MgB2是放热反应,预热温度和真空度是影响MgB2性能的主要因素,当预热温度太低时不能用电弧引导反应,理论计算和实验结果表明预热温度应该大于484 K,但预热温度太高会使部分MgB2分解为MgB4和MgB7,当预热温度为520K,真空度为2.4*10^-3Pa时,试样的临界温度Tc=38.45K,温度转变宽度小于0.4 K,临界电流密度Jc=1.60*10^6A/cm^2(10 K,0.5 T),1.65*10^6A/cm^2(20 K,0 T).试样的致密度较低时,结构为层状,层与层之间有空洞,每层由颗粒状晶粒组成,颗粒尺寸为2 mum~5 mum.SHS法制备MgB2超导块材工艺简单、反应时间短(3 s~5 s).
Keyword自蔓延(SHS)法 预热温度 真空度 MgB2超导性能
Indexed ByCSCD
Language中文
WOS Research AreaEngineering
WOS SubjectENGINEERING ELECTRICAL ELECTRONIC
CSCD IDCSCD:2505156
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/75918
Collection理学院
材料科学与工程学院
Affiliation兰州理工大学, 甘肃省有色金属新材料国家重点实验室, 兰州, 甘肃 730050, 中国
First Author AffilicationColl Mat Sci & Engn
First Signature AffilicationColl Mat Sci & Engn
Recommended Citation
GB/T 7714
冯旺军,夏天东,刘天佐,等. 预热温度和真空度对自蔓延法制备MgB2超导块材的影响[J]. 稀有金属材料与工程,2006,35(6):963-965.
APA 冯旺军,夏天东,刘天佐,赵文军,&魏智强.(2006).预热温度和真空度对自蔓延法制备MgB2超导块材的影响.稀有金属材料与工程,35(6),963-965.
MLA 冯旺军,et al."预热温度和真空度对自蔓延法制备MgB2超导块材的影响".稀有金属材料与工程 35.6(2006):963-965.
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