Gelcasting of Alumina-Spinel Refractories
The preparation process of alumina-spinel slurries by using micro-sized alumina-spinel mixtures as raw materials was investigated.The slurries with solids content of 62 vol% and viscosity of 0.3 Pas were prepared by adding self-made dispersant ANSP which was a mixture of AN-2000 and STP in mass ratio of 4 to 1.The alumina-spinel refractory was fabricated from the slurries by gelcasting process.The dry parts containing micro-sized alumina-spinel powders with 3.57wt% gel have the highest bending strength of 29.8 MPa and 17.6 MPa with 15∶1 AM-MBAM and 4∶1 MAM-MBAM respectively.The bending strength enhanced with the increase of reaction temperature.For example,to the 15 wt% 15∶1 AM-MBAM gel premix,the bending strength of the parts gelled at 25℃ and 55℃ were 27.3 MPa and 32.4 MPa respectively.The bending strength also increased with the rising of the amount of monomer.
Gelcasting Alumina-spinel Slurry Refractories
Liu Kaiqi Pan Wei Fan Zhengkun Liu Yongfeng Wang Bingjun
Tsinghua University,Beijing 100084,China;Central Iron & Steel Research Institute,Beijing 100081,Chin Tsinghua University,Beijing 100084,China Shangdong Institute of Advanced Ceramics Co.,Ltd.Zibo 255086,China Central Iron & Steel Research Institute,Beijing 100081,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1149-1151
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）