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

武汉理工大学学报-材料科学版(英文版), 2012, 27(2): 316-320. doi: 10.1007/s11595-012-0459-6

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China; Hainan Stomatological Hospital, Haikou 570105, China

2.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

3.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

4.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

5.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

6.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

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

ZHANG Jingchao ^1, , ZHAO Yongqi ^2, , LIAO Yunmao ^3, , JIANG Li ^4, , YUN Xiaofei ^5, , LI Wei ^6,

2.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

3.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

4.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

5.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

6.State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; West China College of Stomatology, Sichuan University, Chengdu 610041, China

Keywords： 3Y-TZP

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 insignificant 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.

参考文献

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

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