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(jí)檢索
Influence of Nd on Microstructure and Bio-corrosion Rsistance of Mg-Zn-Mn-Ca Alloy
DOI:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

基金項(xiàng)目:


Influence of Nd on Microstructure and Bio-corrosion Rsistance of Mg-Zn-Mn-Ca Alloy
Author:
Affiliation:

Fund Project:

National Key Technologies R&D Program (2011BAE22B04)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問(wèn)統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    將0.4%（質(zhì)量分?jǐn)?shù)，下同）的Nd添加到Mg-6Zn-1Mn-0.5Ca合金中，以研究稀土元素Nd對(duì)合金顯微組織和耐生物腐蝕性能的影響。采用金相(OM)、帶能譜的掃描電鏡(SEM+EDS)以及XRD等手段分析了合金的微觀組織。采用靜態(tài)浸泡、析氫和電化學(xué)極化等手段研究了合金在模擬體液(SBF)中的耐腐蝕性能。結(jié)果表明，隨著Nd的添加，合金的顯微組織得到了明顯的細(xì)化。在Mg-6Zn-1Mn-0.5Ca-0.4Nd合金中形成了2種第二相的機(jī)械混合物Ca2Mg6Zn3 + Mg41Nd5。在SBF中浸泡7 d以后，較多的此種混合物仍殘留于含Nd合金的表面，而在不含Nd的合金中，只有極少量的顆粒狀Ca2Mg6Zn3殘留在其表面。故Nd的添加顯著提高了Mg-6Zn-1Mn-0.5Ca合金的耐生物腐蝕性能。

    Abstract:

    In order to investigate the effect of Nd on the microstructure and corrosion resistance of Mg-Zn-Mn-Ca alloy, 0.4 wt% Nd was added into Mg-6Zn-1Mn-0.5Ca alloy. OM, SEM equipped with EDS and XRD were used to characterize the microstructures, and crystal structures. The bio-corrosion resistance were studied by immersion corrosion, hydrogen evolution and electrochemical measurement in simulated body fluid (SBF). Results show that the grain size decreases with the addition of Nd. A mixture of secondary phases Ca2Mg6Zn3+Mg41Nd5 is found in Mg-6Zn-1Mn-0.5Ca-0.4Nd alloy. After immersion in SBF for 7 d, more such mixture still remains on the Nd-containing alloy surface, whereas few Ca2Mg6Zn3 particles remain on the alloy without Nd. Thus, the bio-corrosion resistance increases due to presence of Nd.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王 勇,廖治東,宋長(zhǎng)江,張恒飛. Influence of Nd on Microstructure and Bio-corrosion Rsistance of Mg-Zn-Mn-Ca Alloy[J].稀有金屬材料與工程,2013,42(4):661~666.[Wang Yong, Liao Zhidong, Song Changjiang, Zhang Hengfei. Influence of Nd on Microstructure and Bio-corrosion Rsistance of Mg-Zn-Mn-Ca Alloy[J]. Rare Metal Materials and Engineering,2013,42(4):661~666.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)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:2012-04-30
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: