The most important properties governing the operation of refractories are refractoriness, service temperature and heat resistance. The heat resistance of specimens based on Al2O3 is determined by a standard laboratory procedure with cooling in water (JUS.B.D.8.319). In order to analyze possible worsening of specimen property indices before, during and after rapid water cooling a Pro Plus Program control system is used. This program has also been used for analyzing the nature of grain size distribution. Simultaneously mechanical properties such as strength, dynamic elasticity modulus, determined from data for measuring resonance frequency and ultrasonic (US) velocity, are determined. The correlation between worsening property indices, US velocity, strength and heat resistance is studied in this work. The results obtained are used for a model predicting refractory specimen heat resistance.
Refractories and Industrial Ceramics – Springer Journals
Published: Nov 21, 2008
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