%0 Journal Article
%T LATTICE EXPANSION IN NANOCRYSTALLINE PURE Ni<br>纯镍纳米晶体的晶格膨胀
%A LU Ke
%A LIU Xuedong
%A ZHANG Haoyue
%A HU Zhuangqi
%A <br>卢柯
%A 刘学东
%A 张皓月
%A 胡壮麒
%J 金属学报
%D 1995
%I 
%X The lattice structure of nanocrystalline pure Ni. prepared by high-frequency sputtering, has been investigated. The lattice parameter of nanocrystalline Ni samples with grain sizes ranging from 6 to 15 nm was measured accurately by X-ray diffraction. It was found that the lattice parameter(a) for the nanocrystallie samples is larger than that for the perfect Ni single crystal(ao), and the value of a increases significantly with the decrease of grain size. According to the thermodynamic theory, the lattice expansion in the nanocrystalline sample was explained.
%K nanocrystalline materials
%K lattice expansion
%K Ni
%K lattice parameter<br>纳米晶体
%K 晶格膨胀
%K 纯镍
%K 金属材料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=D123E7DF74B97924BCD6536B53F472A0&yid=BBCD5003575B2B5F&vid=4AD960B5AD2D111A&iid=0B39A22176CE99FB&sid=67969BA850333433&eid=46CB27789995047D&journal_id=0412-1961&journal_name=金属学报&referenced_num=12&reference_num=1