The effects of in situ formation of Y 3 Al 5 O 12 on property improvement of magnesium aluminate spinel refractories
The effects of in situ formation of Y 3 Al 5 O 12 on property improvement of magnesium aluminate spinel refractories
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DOI：
10.1016/j.ceramint.2018.01.014
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发表时间：
2018
影响因子：
5.2
通讯作者：
Jiangbo Liu;Zhou Wang;Xitang Wang;Hao Liu;Yan Ma
中科院分区：
文献类型：
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作者：
Jiangbo Liu;Zhou Wang;Xitang Wang;Hao Liu;Yan Ma
Magnesium aluminate spinel is widely used in cement rotary kilns, in the iron and steel industries, as well as in glass melting furnaces due to its excellent performance and chemical stability at both room temperature and elevated temperatures. In spite of these advantages, there are some practical problems during production of magnesium aluminate spinel refractories due to their poor sinterability: poor mechanical properties and poor creep resistance. These issues can cause problems during service. This study improved the sinterability of spinel refractories and in turn improved mechanical properties while decreasing the creep rate. This was done by forming a second low creep rate phase of yttrium aluminum garnet in the matrix structure. The addition of Y2O3and reactive Al2O3accelerated the densification process and increased the cold strength. There was a significant increase in the hot modulus of rupture due to the formation of YAG or the solid solution with spinel.
