摘要
重点研究了Ａｌ２Ｏ３ ／ＺｒＳｉＯ４ 富铝体系反应烧结制备过程中的晶相变化，以及Ａｌ２Ｏ３／ＳｉＯ２ 比对反应烧结的影响，进而研究了添加Ｃｒ２Ｏ３ 对反应烧结的影响．研究表明，在反应烧结过程中，莫来石的生成明显滞后于ＺｒＳｉＯ４ 的分解；在相同温度下，ＺｒＳｉＯ４ 的分解程度随Ａｌ２Ｏ３ 的加入量的增加而提高．添加Ｃｒ２Ｏ３ 使莫来石的稳定生成温度提高，此外，Ｃｒ２Ｏ３ 的引入有助于Ａｌ２Ｏ３
The phase evolution during the reaction sintering process for the alumina rich system/ZrSiO 4 and the effects of the molar ratio of Al 2O 3/SiO 2 on the reaction sintering were studied.In addition,the effects of Cr 2O 3 addition on the reaction sintering were investigated.The study showed that the formation of mullite was much slower than the dissociation of zircon,and the degree of zircon dissociation was raised with the increase of alumina content at the same temperature.The temperature for the steady formation of mullite was increased as a result of the Cr 2O 3 addition,which enhanced the solid solution of alumina into mullite as well.
出处
《天津大学学报》
EI
CAS
CSCD
1999年第6期745-749,共5页
Journal of Tianjin University(Science and Technology)
