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
Cu-Ti-C反應(yīng)復(fù)合-擴(kuò)散連接Cf/SiC復(fù)合材料和TC4鈦合金接頭的組織結(jié)構(gòu)
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:


Microstructure of Reactive Composite Brazing Joints of Cf/SiC Composite to Ti-6Al-4V Alloy with Cu-Ti-C Filler Material
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪(fǎng)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:

    用Cu粉、Ti粉、石墨粉組成的混合粉末連接Cf/SiC陶瓷基復(fù)合材料和TC4鈦合金，采用X射線(xiàn)衍射、掃描電鏡和能譜儀對(duì)接頭組織結(jié)構(gòu)進(jìn)行分析。結(jié)果表明：在Cu-(15~30)Ti（ω, %）粉末中加入適量石墨粉作釬料，經(jīng)900~950 ℃、5~30 min真空釬焊，獲得了完整的原位合成TiC增強(qiáng)的復(fù)合接頭。通過(guò)在連接層中原位合成一定體積分?jǐn)?shù)TiC可以明顯降低接頭熱應(yīng)力。釬料石墨顆粒中的C元素和液相連接層中Ti元素發(fā)生相互擴(kuò)散，形成了殘余石墨顆粒周?chē)腡iC反應(yīng)層和分布在連接層中的TiC顆粒。反應(yīng)速率主要受C元素由石墨顆粒向液相連接層的擴(kuò)散速率所控制。

    Abstract:

    Using the mixed powders of Cu, Ti and graphite, Cf/SiC composite was brazed to Ti-6Al-4V alloy under vacuum condition. The joint microstructures were investigated by X-ray diffractrometry, scanning electron microscopy and energy dispersive spectrometry. The results showed that fine brazed joints of Cf/SiC composite/Ti alloy were acquired at 900~950 ℃ for 5~30 min using Cu-(15~30wt%)Ti with the addition of proper amount of graphite powder as brazing alloy. In-situ synthetic TiC which reduces the thermal stress significantly was obtained during vacuum brazing. TiC reaction layer around surplus graphite and TiC particles in the bonding layer was synthesized by interdiffusing of C element and Ti element in the liquid bonding layer. The reaction rate could be controlled by the diffusion rate of C element from graphite particles to liquid bonding layer.

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

班永華,黃繼華,張 華,趙興科,張志遠(yuǎn). Cu-Ti-C反應(yīng)復(fù)合-擴(kuò)散連接Cf/SiC復(fù)合材料和TC4鈦合金接頭的組織結(jié)構(gòu)[J].稀有金屬材料與工程,2009,38(4):713~716.[Ban Yonghua, Huang Jihua, Zhang Hua, Zhao Xingke, Zhang zhiyuan. Microstructure of Reactive Composite Brazing Joints of Cf/SiC Composite to Ti-6Al-4V Alloy with Cu-Ti-C Filler Material[J]. Rare Metal Materials and Engineering,2009,38(4):713~716.]
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:2008-03-29
  • 最后修改日期:2008-12-29
  • 錄用日期:
  • 在線(xiàn)發(fā)布日期:
  • 出版日期: