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Behaviour of alumina-spinel self-flowing castables with NANO-alumina particles addition

Otroj, S ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. Publisher: 2009
  3. Abstract:
  4. The purpose of this study is to determine the influence of nano-alumina particles on the self-flow characteristics of aluminaspinel self-flowing castables. for this reason, the self-flow characteristics such as; self-flow value and working time of the alumina-spinel castables with different amount of nano-alumina particles have been studied. Also, the mechanical properties and microstructure of these castables have been studied. for the study of nano-alumina (d50 =4 3 nm) addition on selfflow characteristics and other properties of these castables, reactive alumina is substituted by nano-alumina powder in 0-4 wt.% range. The results show that the nano-alumina particles have great effect on the self-flow characteristics and mechanical strength. With increase of nano-alumina particles in castable composition, the self-flow value and working time tends to decrease and cold crushing strength is enhanced at all temperatures. By use of 1.5 wt.% nano-alumina contents in the castable composition, the alumina-spinel self-flowing castable with adequate working time and very high mechanical strength can be obtained
  5. Keywords:
  6. Alumina-Spinel ; Castable ; Castables ; Cold crushing strengths ; High mechanical strength ; Mechanical strength ; Nano-Alumina ; Reactive alumina ; Self-Flow ; Self-flow characteristics ; Working time ; Cements ; Cold working ; Mechanical properties ; Alumina
  7. Source: Ceramics - Silikaty ; Volume 53, Issue 2 , 2009 , Pages 98-101 ; 08625468 (ISSN)
  8. URL: http://www.ceramics-silikaty.cz/2009/pdf/2009_02_98.pdf?jy=1387&%3Bid=3647