Abrasion Wear Properties of Low Cement Castable with Boron Addition
Süperatess Refractory Inc., 34398 Istanbul/Turkey
Volume 6, Issue 3, Pages 89 - 92
Three low cement castables with silicon carbide and boron compound addition, which are commonly used for the high abrasive resistance applications, were compared by using a hot blast abrasion test at various temperatures. Relative results were compared in terms of physical, mechanical and abrasive properties of concrete. Abrasion wear rate of carbide containing concrete is highly dependent on the dense layer and retards the oxidation of carbide at high temperature. It was concluded that the boron compound containing castable with a layer of dense glassy phase on concrete surface was observed to exhibit the lowest rate of abrasion wear in a hot abrasion test at 1200 °C. The glassy layer on concrete acts also as a barrier for oxidation protection as during the hot abrasion test after several cycles the abrasion rates were progressively reduced by the dense structure on concrete.
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