最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
磁熱處理對La-Mg-Ni-Cu合金相結構與電化學性能的影響
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

上海市科委西部開發(fā)科技合作項目(065258036)；上海市青年科技啟明星計劃(06QA14021)及全國博士學位論文作者專項資助項目(200746)


Influence of Magnetic-Heat Treatment on Phase Structure and Electrochemical Properties of La-Mg-Ni-Cu Alloys
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    考察了La0.67Mg0.33Ni2.5Cu0.5合金分別在鑄態(tài)、熱處理后及磁熱處理后3種狀態(tài)下的相結構及其電化學性能。并通過XRD分析合金物相組成及SEM觀察合金組織形貌，研究了Cu部分取代Ni以及有無外加磁場下熱處理對合金相結構與電化學性能的作用規(guī)律。結果表明，La0.67Mg0.33Ni2.5Cu0.5鑄態(tài)合金經過50次循環(huán)后，放電容量保持率從64.40%提高到72.44%；經磁熱處理的La0.67Mg0.33Ni2.5Cu0.5合金最大放電容量為328.2 mAh/g，較常規(guī)熱處理合金的容量提高了

    Abstract:

    The phase structure and electrochemical properties of La0.67Mg0.33Ni2.5Cu0.5 alloys as cast and treated by heat treatment and magnetic-heat treatment were studied in this paper. The influence of the heat treatment and magnetic-heat treatment as well as Ni substituted partly with Cu on the phase structure and electrochemical properties of La-Mg-Ni-Cu alloys were investigated by XRD and SEM analysis. The results show that the retention of discharge capacity of as-cast La0.67Mg0.33Ni2.5Cu0.5 alloy is increased to 72.44% from 64.40% after 50 cycles. The maximum discharge capacity of La0.67Mg0.33Ni2.5Cu0.5 alloy after magnetic-heat treatment is 328.2mAh/g, which is 31.51% larger than that of La0.67Mg0.33Ni2.5Cu0.5 alloy after heat treatment. Its retention of discharge capacity is 75.89% after 50 cycles. The characteristic of discharge voltage platform is much flatter and longer, the limit current density is increased and the diffusion speed of hydrogen in the alloys increases.

    參考文獻
    相似文獻
    引證文獻
引用本文

趙顯久,李 謙,劉 靜,周國治,林根文.磁熱處理對La-Mg-Ni-Cu合金相結構與電化學性能的影響[J].稀有金屬材料與工程,2009,38(5):857~861.[Zhao Xianjiu, Li Qian, Liu Jing, Zhou Guozhi, Lin Genwen. Influence of Magnetic-Heat Treatment on Phase Structure and Electrochemical Properties of La-Mg-Ni-Cu Alloys[J]. Rare Metal Materials and Engineering,2009,38(5):857~861.]
DOI：[doi]

復制
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2008-05-20
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: