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
3D-Si/LG5復(fù)合材料微觀組織及熱物理性能研究
DOI:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國(guó)家“863”計(jì)劃(2003AA305110)；哈爾濱工業(yè)大學(xué)優(yōu)秀青年教師培養(yǎng)計(jì)劃（HITQNJS.2008.057）資助項(xiàng)目


Study on Microstructure and Thermophysical Properties of 3D-Si/LG5 Composites
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(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:

    采用壓力浸滲技術(shù)制備Sip/LG5復(fù)合材料并對(duì)其進(jìn)行高溫?cái)U(kuò)散處理。組織觀察表明：復(fù)合材料增強(qiáng)體形貌經(jīng)過高溫?cái)U(kuò)散處理后由不規(guī)則的尖角形狀轉(zhuǎn)變?yōu)槿S網(wǎng)絡(luò)結(jié)構(gòu)(3D)。對(duì)3D-Si/LG5復(fù)合材料界面的研究表明，與高溫?cái)U(kuò)散處理前復(fù)合材料的界面相比，三維網(wǎng)絡(luò)結(jié)構(gòu)3D-Si/LG5復(fù)合材料的界面更光滑，界面結(jié)合程度也更好。三維網(wǎng)絡(luò)結(jié)構(gòu)3D-Si/LG5復(fù)合材料界面處及基體合金內(nèi)部有Si析出，基體合金中存在著孿晶；三維網(wǎng)絡(luò)結(jié)構(gòu)3D-Si/ LG5復(fù)合材料的平均線膨脹系數(shù)與高溫?cái)U(kuò)散處理前相比，降低了10.5%；增強(qiáng)體三維網(wǎng)絡(luò)化減少界面及基體中大量細(xì)小彌散的Si析出，使得三維網(wǎng)絡(luò)3D-Si/ LG5復(fù)合材料的熱導(dǎo)率變化不大。

    Abstract:

    Dense and uniform Sip/LG5 composites were fabricated by squeeze casting process, and then were treated by high temperature diffusion. Microstructure observation indicated that Si transformed from irregular sharp-particles to 3D network structure after high temperature diffusion treatment. Si-Al interface of 3D-Sip/LG5 composites is smoother and has better bonding degree, compared with the interface of the untreated composites. There are Si precipitation in the interface and the matrix of 3D-Sip/LG5 composites. Twin crystals were observed in the matrix of 3D-Sip/LG5 composites. The average linear thermal expansion (CTE) of the composites is decreased by 10.5% after high temperature diffusion treatment. However, the thermal conductivity of 3D-Sip/LG5 composites does not change significantly due to the decreased Si precipitation in the interface and matrix by 3D network structure of Si.

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

修子揚(yáng),陳國(guó)欽,王曉峰,武高輝,鄧宗權(quán).3D-Si/LG5復(fù)合材料微觀組織及熱物理性能研究[J].稀有金屬材料與工程,2010,39(1):65~68.[Xiu Ziyang, Chen Guoqin, Wang Xiaofeng, Wu Gaohui, Deng Zongquan. Study on Microstructure and Thermophysical Properties of 3D-Si/LG5 Composites[J]. Rare Metal Materials and Engineering,2010,39(1):65~68.]
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:2009-01-16
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: