Effect of additives on the sintering of MgAl2O4
Effect of additives on the sintering of MgAl2O4
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DOI：
10.1016/j.jallcom.2013.10.250
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发表时间：
2014-02
影响因子：
6.2
通讯作者：
Taehyung Kim;Donghyun Kim;Shinhoo Kang
中科院分区：
文献类型：
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作者：
Taehyung Kim;Donghyun Kim;Shinhoo Kang
研究了添加剂对化学计量尖晶石致密化的影响。SiO2、caco3和tio2作为尖晶石成分的添加剂，添加量在1 ~ 4 wt%之间。采用膨胀测量法研究了烧结体的致密化行为，并从微观结构、相形成和晶格参数变化等方面对烧结体进行了表征。当添加sio2和caco3时，在晶界区形成玻璃相，显著增强了致密化。tio2的加入导致晶界和晶粒内部形成二次相，致密化增强。
The effect of additives on the densification of stoichiometric spinel was investigated. SiO2, CaCO3and TiO2are used as additives to spinel composition in the range of 1–4 wt%. Densification behavior is investigated by dilatometry measurement and the sintered body is characterized in terms of microstructure, phase formation and change in lattice parameter. In case of SiO2and CaCO3additions, the densification was significantly enhanced with the additives by forming glassy phases in grain boundary region. The addition of TiO2resulted in the formation of secondary phase at grain boundaries and inside grains along with enhanced densification.