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
基于楊氏模量可控多孔鈦微觀組織和力學(xué)性能的研究
DOI:
作者:
作者單位:

西北工業(yè)大學(xué) 凝固技術(shù)國家重點實驗室 西安,西北工業(yè)大學(xué) 凝固技術(shù)國家重點實驗室 西安,西北工業(yè)大學(xué) 凝固技術(shù)國家重點實驗室 西安,西北工業(yè)大學(xué) 凝固技術(shù)國家重點實驗室 西安,西北工業(yè)大學(xué) 凝固技術(shù)國家重點實驗室 西安,西北工業(yè)大學(xué) 凝固技術(shù)國家重點實驗室 西安

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)


Microstructure and mechanical properties of porous titanium based on controlling Young’s modulus
Author:
Affiliation:

State Key Laboratory of Solidification Processing,Northwest Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwest Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwest Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwest Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwest Polytechnical University,Xi’an,State Key Laboratory of Solidification Processing,Northwest Polytechnical University,Xi’an

Fund Project:

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

    人體植入物的楊氏模量在減少因植入物楊氏模量遠(yuǎn)大于骨組織而帶來的應(yīng)力屏蔽,提高植入物器件在人體的服役壽命具有十分重要的作用。本文采用一種新型的鈦網(wǎng)層疊燒結(jié)法制備多孔鈦,研究多孔鈦的微觀孔形貌,壓縮變形特點和具有可控性的多孔鈦孔隙率、孔徑大小和孔分布對多孔鈦微觀組織及力學(xué)性能的影響。研究結(jié)果表明:這種方法制備的多孔鈦在微觀結(jié)構(gòu)上具有不同方向有不同的微觀孔形貌,因而使多孔鈦具有異性;軸向壓縮應(yīng)力應(yīng)變曲線表明多孔鈦具有平穩(wěn)、光滑的彈性和塑性變形行為;當(dāng)增加孔隙率,或相同孔隙率下,減小孔名義尺寸,改變孔分布由規(guī)則到錯排時,均能降低多孔鈦的彈性模量。因此,通過調(diào)控多孔鈦的這些結(jié)構(gòu)參數(shù),可使其具有與不同骨組織相匹配的力學(xué)性能和利于骨組織長入的孔徑尺寸。這種與骨組織適配的力學(xué)性能和孔結(jié)構(gòu),在提高植入物器件的服役壽命具有很大的潛力。

    Abstract:

    The Young’s modulus of implant plays an important role in reducing stress shielding. A new method called titanium mesh the stacked-forced-sintering (TMSS) was applied to porous titanium, which easily control Young’s modulus and balance the mechanical properties by different porosities, pore sizes and pore distribution. The results show that porous titanium has different structures in different directions. It has regular macro-pores in the cross section and irregular micro-pores in the longitudinal section. The stress-strain curve of porous titanium shows smooth and stable increase at plastic deformation along the axis direction. The young’s modulus obviously decreases, when increasing the porosity, decreasing nominal pore size, and changing pore distribution from regular to staggered at the same porosity. So the Young’s modulus of porous titanium can be adjusted by these architecture factors to match the different bone tissues, and the appropriate pore sizes have the potential to induce bone tissue ingrowth. The match of mechanical properties and appropriate structures can effectively promote the fixation between the implant and the bone tissue in a long term.

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

徐廣勝,寇宏超,劉向宏,李福平,李金山,周 廉.基于楊氏模量可控多孔鈦微觀組織和力學(xué)性能的研究[J].稀有金屬材料與工程,2017,46(8):2041~2048.[XU Guangsheng, KOU Hongchao, LIU Xianghong, LI Fuping, LI Jinshan, ZHOU Lian. Microstructure and mechanical properties of porous titanium based on controlling Young’s modulus[J]. Rare Metal Materials and Engineering,2017,46(8):2041~2048.]
DOI:[doi]

復(fù)制
文章指標(biāo)
  • 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:2015-06-23
  • 最后修改日期:2015-09-06
  • 錄用日期:2015-09-25
  • 在線發(fā)布日期: 2017-11-16
  • 出版日期: