采用国产3Y-TZP亚微米粉体,通过双向模压结合等静压成形有效克服了条形试样的烧结弯曲,探讨了24 h排胶工艺对预烧试样力学性能的影响,通过对预烧试样热膨胀曲线的测定、不同烧结温度试样力学性能和密度的比较及XRD定量分析确定了适宜的烧结工艺.结果表明,排胶工艺对预烧试样的抗弯强度和断裂韧性并无显著影响,对于牙科支架用陶瓷,将预烧试样升至1550℃保温0.5 h,即可获得足够的抗弯强度,提高其断裂韧性.
参考文献
| [1] | Christensen G J .[J].Journal of the American Dental Association,1994,125(03):311. |
| [2] | Beham G .[J].ZWR,1991,100(06):404. |
| [3] | Grossman D G .[J].Dental Clinics of North America,1985,29(04):725. |
| [4] | Jung YG;Peterson IM;Pajares A;Lawn BR .Contact damage resistance and strength degradation of glass-infiltrated alumina and spinel ceramics.[J].Journal of Dental Research: Official Publication of the International Association for Dental Research,1999(3):804-814. |
| [5] | Jones D W.[A].Chicago:Quintessence Publishing Co.Inc,1985:83. |
| [6] | May K B;Russell M M;Razzoog M E et al.[J].The Journal of Prosthetic Dentistry,1998,80(04):394. |
| [7] | ISO 6872-1994.ISO 6872-1994.Dental Ceramic[S]. |
| [8] | Rizkalla A S;Jones D W .[J].DENTAL MATERIALS,2004,20(02):198. |
| [9] | Guazzato M;Albakry M;Ringer S P et al.[J].DENTAL MATERIALS,2004,20(02):449. |
| [10] | Kosmac T;Oblak C;Jevnikar P et al.[J].Dental Materials,1999,15(06):426. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%