The Fracture Analyse of Titanium Bone Implant

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• 作者：Baiyang LouaChunlei LiubBin Xuc
• 会议时间：2010-09-01
• 关键词：Titanium ; Palmar-bone Implant ; Fracture
• 作者单位：Institute of Material and Surface Engineering,Zhejiang University of Technology,Hangzhou 310014,People's Republic of China
• 母体文献：第十七届华东六省一市热处理年会论文集
• 会议名称：第十七届华东六省一市热处理年会
• 会议地点：江苏昆山
• 主办单位：中国机械工程学会
• 语种：chi

摘要

The titanium and its alloys are getting used more and more as for human implant in recent years.In this paper,the broken titanium palmer-bone implant was investigated with field emission scanning electron microscopy (SEM) and X-ray spectrometer and then the reasons of implant fracture was researched.The material composite analysis result shows that the implant is made of industrially pure titanium in which the microelements aluminium,calcium and vanadium are on the high sides.The macro analysis result indicates that the implant did not deform remarkably before cracking.The micro analysis result indicates that there is coarse crystalloid fracture in the SEM macrograph,suggesting that the implant material has low fracture strength.The implant fails in mixed cleavage fracture and intergranular fracture accompanied by fatigue fracture in part region,suggesting that the main fracture type was brittle fracture.