Effect of Sintering Temperature on Aging Resistance and Mechanical Properties of 3Y-TZP Dental Ceramic

被引：0
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作者：
张静超 [1 ,2 ,3 ]
李伟 [1 ,2 ]
机构：
[1] State Key Laboratory of Oral Diseases,Sichuan University
[2] West China College of Stomatology,Sichuan University
[3] Hainan Stomatological
来源：
Journal of Wuhan University of Technology(Materials Science Edition) | 2012年 / 27卷 / 02期
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摘要：
In order to investigate the effect of sintering temperature on aging properties and mechanical properties of 3Y-TZP dental ceramic in simulated oral environment,3Y-TZP nanopowder compacts were pressurelessly sintered at 1 350 ℃,1 400 ℃,1 450 ℃,1 500 ℃,respectively,then were treated by soaking in artificial saliva(65 ℃,pH=7)for two months.The treated specimens sintered at 1 350 ℃ showed there was no phase transformation but whose strength and toughnesswere significantly improved(P<0.05),while those sintered at 1 400 ℃-1 500 ℃ revealed a small amount of phase transformation and insignifi cant mechanical reinforcement(P>0.05).No micro-cracks were detected but increment in lattice volume was found in all specimens.Lowering sintering temperature favors aging resistance and mechanical reinforcement of 3Y-TZP in a simulated oral environment.
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页码：316 / 320
页数：5
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