Synthesis of CA6/AlON Composites with Enhanced Slag Resistance

Aim: ing to improve the slag resistance of calcium hexaaluminate (CA 6 ), different amounts of AlON have been introduced into CA 6 using two approaches, i.e. one-step and two-step methods. The results show that both the two phases of CA 6 and AlON are uniformly distributed when sintered at 1650 °C for 2 h in flowing nitrogen using two-step method. The optimized amount of AlON addition is determined to be 10 wt%. In addition, the reaction test method is performed and CA 6 /AlON composite exhibits much better slag penetration and corrosion resistance compared with pure CA 6 . The effect of AlON is also discussed.