A New Technique for Testing Abrasion Resistance of Refractories at Elevated Temperatures

摘要：

　　Based on an extensive comparison of test methods for abrasion resistance from home and abroad,a new technique for abrasion resistance at elevated temperature has been developed with some improvements.Two connected airtight chambers are designed to prevent compressed air from entering the sample chamber,so that heat loss of the sample chamber can be reduced and the chamber temperature is less disturbed.The sample surface temperature can reach stable within 5 min and the temperature fluctuation on sample surface can be less than 20℃ in the course ofinleting the compressed air at working temperatures up to 1400℃.The repeatability was tested using float-glass plate as reference sample at ambient temperature and using high alumina bricks for elevated temperature.A variation coefficient under 7% at ambient temperature has been achieved.Comparison of abrasion resistance at elevated temperature was tested respectively on a high alumina brick and on a silicon nitride bonded silicon carbide brick and the results could be significantly distinguished.Nitrogen can be blown into sample chamber during heating the furnace to prevent nonoxide bearing samples from being oxidized.

关键词： Abrasion resistance Refractories

作者: Peng Xigao Sun Jialin Shi Gan Huang Shaoping

作者单位: University of Science and Technology Beijing, Beijing 100083, China; Sinosteel Luoyang Institute of University of Science and Technology Beijing, Beijing 100083, China Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, China Luoyang Precondar Instruments for Testing Refractories Co., Ltd., Luoyang 471039, China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 230-233

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）