Effects of Presintering Temperature and Heating Rate on the Physical and Mechanical Properties of Alumina-Glass-Composites

Abstract:

Objective: To study the effects of presintering temperature and temperature rise speed on the physical and mechanical properties of alumina-glass-composite (AGC). Methods: AGC was prepared respectively under the condition that presintered at 1400°C and 1450°C as well as two kind of temperature rise 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 presentering temperature and the temperature rise speed, density of AGC decreased, bending strength, fracture toughness, modulus of elasticity increased markedly. There was no difference between three-point bending strength and fracture toughness of AGC that was made by two temperature rise speed to 1450°C. Bending strength of AGC that was made by lower temperature rise speed to 1400°C was the lowest. The Vicker’s hardness of the 1450°C groups was higher than that of the 1400°C groups. Conclusion: Both presintering temperature and the temperature rise speed can influenced the properties of AGC, but the effect of presintering temperature was the most.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 549-552
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.549
• Online since: April 2010
• Authors: Jie Liu, Long Quan Shao, Yuan Fu Yi, Bin Deng, Wei Wei Zhang, Li Min Dong, Hong Chen Liu, Jie Mo Tian, Ning Wen
• Keywords: Alumina, Glass Infiltration, Sintering Temperature

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