口腔种植材料中纯钛和Ti_6Al_7Nb合金在人工唾液中的复合微动磨损行为研究.pdf

《口腔种植材料中纯钛和Ti_6Al_7Nb合金在人工唾液中的复合微动磨损行为研究.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、2015年2月第2卷／第2期全科口腔医学杂志Vo1．2，No．2，Feb．2015GeneralJournalOfStomatology3口腔种植材料中纯钛和Ti6AI7Nb合金在人工唾液中的复合微动磨损行为研究赵慧，张保荣，王晓东，董云士(1．航空总医院，北京100012；2．河南省新乡市第二人民医院，河南新乡453000)【摘要】目的研究口腔种植体材料纯钛(TA2)和TA1Nb在人工唾液环境中切向微动和切向与径向的复合微动。方法选用处理过的纯钛和TiA1Nb合金在微动实验装置中测得最大载荷、最

2、小载荷、加载速度、循环周次试验参数。结果Ti6A17Nb合金与纯钛TA相比耐磨性更好。随着倾斜角度的增加和外加载荷的降低，磨损变的轻微。结论复合微动的的动力学行为和磨损程度依赖于外加载荷、倾斜角度、循环次数和材料特性。【关键词】摩擦磨损；复合微动；人工唾液【中图分类号】R783【文献标识码】B、ThestudyofrunninganddamagemechanismsofcompositefrettingofpuretitaniumandTi6AI7Nballoyindentalimplantati

3、onZHAOHui，ZHANGBao—rong，WANGXiao—dong，DONGYun—shi(1．Generalhospitalofchinaaviation，Beijing100012，China；2．Thesecondpeople’Shospitalofhenanprovincexinxiangcity,HenanXinxiang453000，China)[Abstract]ObjeetiveTostudypuretitanium(TA2)，Ti6Al7Nb，whicharecommon

4、lyusedasdentalimplantmaterials，wereselectedasthecounter-pair．Thestudiesonthetangentialfrettingandcompositefreting(radialandtangentia1)intheartificialsalivaenvironmentsystemarecarriedoutsystemically．MethodsSelectpuretitanium(TA2)，Ti6A17Nb，whichareProce

5、ssed，tomeasuremaximumload，minimumload，loadingspeed，cycletimestestparametersinmicroexperimentaldevice．ResultsTheTiA17Nbpresentedbetterdua1．motionfrettingwearresistancethanthatofTA．inartificialsalivaunderthesametestparameters．Andwiththeincreaseofincline

6、dangleanddecreaseofimposedload．thewearextentbecameslighteraccordingly．ThewearmechanismsofpuretitaniumTA，andTiAl7Nballoyundertheconditionofdua1．motionfrettinginartificialsalivawereabrasivewear,oxidativewearanddelamination．ConclusionThedua1．motionfretti

7、ngkineticandwearbehaviorsofTA，puretitaniumandTi6A17Nballoywerestronglydependentupontheimposed1oad，inclinedangle，thenumberofcyclesandmaterialproperties．Duringtheprocessofthedua1．motionfretting，thefretingrunningmodegraduallytransformedfromthedua1．motion

8、fretingtoradialfreting．f．e．thetangentialfretingcomponentreducedandtheradialfretingcomponentincreased．【Keywords】Fwear；Compositefreting；Artificialsaliva摩擦学(Tribology)是研究相对运动的作用表面究，对于简单化的球／平面接触模型，通常可分为4种间的摩擦、润滑和磨损，以及三者间相互关系的理论基本运动方式[10-14]，即：切向微动