摘要
背景:目前广泛应用于临床的纯钛和Ti-6Al-4V种植体材料中存在着铝和钒的潜在毒性及弹性模量太大易造成界面应力屏障等问题。目的:对自行研制的新型钛合金Ti-30Nb-8Zr-2Mo进行硬度及弹性模量性能测试。设计、时间及地点:观察实验,于2003-03/2006-02在河北工业大学材料学实验室完成。材料:钛合金制备用原材料海绵钛纯度≥99%、钼粉纯度≥99%、铌条≥99.9%、海绵锆≥99.4%。方法:在均匀化退火、热煅、固溶后对试样显微硬度进行测量,对时效后的样品进行压缩试验。主要观察指标:硬度值和应力应变曲线。结果:研究显示800℃0.5h固溶后得到最大程度的强化合金,固熔合金硬度变化不大,时效后硬度显著增强,试样的抗压强度为1054MPa,压缩弹性模量达到16.5GPa。结论:自行研制的新型钛合金Ti-30Nb-8Zr-2Mo硬度和弹性模量均达到种植体材料的性能要求。
BACKGROUND： As dental implants, pure titanium and Ti-6AI-4V has achieved broad clinical applications, but they also contain toxic vanadium and aluminum element. Moreover, their elastic modulus is so high as to produce stress shield. OBJECTIVE： To examine the micro-hardness and elastic modulus of the self-made Ti-30Nb-8Zr-2Mo titanium alloy. DESIGN, TIME AND SETTING： An observational experiment was performed at the laboratory of College of Material Science and Engineering at Hebei University of Technology between March 2003 and February 2006. MATERIALS： Titanium alloy was prepared using titanium sponge （≥99% purify）, niobium strip （≥ 99.9% purify）, molybdenum powder （≥ 99% purify） and zirconium sponge （≥ 99.4% purify）. METHODS： The micro-hardness of the specimens was determined after uniformly annealing, hot-forging and solution. Compression test was conducted on post-aging samples. MAIN OUTCOME MEASURES： Hardness and stress-strain curve. RESULTS： The maximal alloy strength was obtained after solution under 800 ~C for 0.5 hours. Post-aging alloy＇s hardness was improved significantly although little change occurred on solution alloy. Compressive strength of alloy samples was 1 054 MPa, while elastic modulus reached 16.5 GPa. CONCLUSION： Both micro-hardness and elastic modulus of the self-made Ti-30Nb-8Zr-2Mo titanium alloy have satisfied performance requirements for dental implant materials.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2009年第16期3189-3192,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
基金
Key Programs of Scientific and Technical Innovation of China, No. 02CJ-020218
University Science and Technology Developmental Foundation of Tianjin, No. 20060123~~
