烧结温度_____烧结温度；氧化铝；玻璃；牙科材料

预烧结温度及升温速率对氧化铝玻璃复合体物理及力学性能的影响

http://www.100md.com 《第四军医大学学报》 2003年第8期

烧结温度,,烧结温度；氧化铝；玻璃；牙科材料,0引言,1材料和方法,2结果,3讨论,【参考文献】

     (解放军总医院口腔科北京 100854，第四军医大学口腔医学院修复科陕西西安 710033，清华大学新型陶瓷与精细工艺国家重点实验室，北京 100854，长春市城西医院口腔科，吉林长春 130062)

    Effects of presintering temperature and temperature elevation speed on physical and mechanical properties of aluminaglasscomposites

    WEN Ning ,YI YuanFu, WANG ZhongYi, ZHANG ShaoFeng, TIAN JieMo，ZHOU LiHong

    Department of Stomatology, General Hospital of Chinese PLA，Beijing 100853,China, Department of Prosthodontics, Stomatological College, Fourth Military Medical University, Xian 710033, China,National Key Laboratory, New Ceramics & Fine Processing, Tsinghua University，Beijing 100854, China, 4Department of Stomatology, Chengxi Hospital, Changchun 130062,China

    【Abstract】 AIM: To study the effects of presintering temperature and the temperature elevation speed on the physical and mechanical properties of aluminaglasscomposites (AGC). METHODS： The aluminaglasscomposite was prepared respectively at 1400℃ and 1450℃ by fast or slow temperature elevation speed. The properties were measured, including density, thermal expansion coefficient, threepoint bending strength, fracture toughness, modulus of elasticity and Vickers hardness of AGC. RESULTS： With the increasing of presintering temperature and the temperature elevation speed, the density of AGC decreased while the bending strength, fracture toughness and modulus of elasticity increased markedly. There was no significant difference between the threepoint bending strength and fracture toughness of AGC at 1450℃ by fast or slow temperature elevation speed, while the threepoint bending strength and fracture toughness of AGC at 1400℃ by slow temperature elevation speed were significant lower than those in the other three groups. The bending strength of AGC at 1400℃ by slower temperature elevation speed was the lowest. The Vickers hardness of the 1450℃ groups was higher than that of the 1400℃ groups. CONCLUSION： Both presintering temperature and the temperature elevation speed influence the properties of AGC. Of the two, the presintering temperature has the greater effect. ......

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