Sintered MgO was prepared by using MgO powder with different particle sizes by calcination of by crystal magnesite as the raw material and CeO₂ powder as an additive. In addition, the effect of the CeO₂ addition on the performance of the sintered MgO was investigated. The results showed that (i) the densification of the sintered MgO with a small amount of CeO₂ addition appreciably promoted, (ii) the maximum bulk density reached 3.48 g cm⁻³, and (iii) the apparent porosity was 0.35%. In the sintering process, the Ca²⁺ could approach into CeO₂ lattices, forming O²⁻ vacancy at CeO₂ grains, which resulted in promoting the growth of CeO₂ grains filling the pores between the MgO grains, and enhanced the densification of sintered MgO. In addition, the solid solution reaction limited the formation of silicate phase in MgO, improving the bonding degree between the MgO grains.

通过以菱镁矿晶体为原料，以CeO ₂粉末为煅烧剂，使用粒径不同的MgO粉末来制备烧结MgO 。另外，研究了CeO ₂添加对烧结的MgO的性能的影响。结果表明：（i）添加少量CeO ₂的烧结MgO的致密化得到明显促进，（ii）最大堆积密度达到3.48g cm ^-3，并且（iii）表观孔隙率为0.35％。在烧结过程中，Ca ²⁺可以进入CeO ₂晶格，在CeO ₂晶粒上形成O ^2-空位，从而促进了CeO的生长_2个晶粒填充了MgO晶粒之间的孔，并增强了烧结MgO的致密化。另外，固溶反应限制了MgO中硅酸盐相的形成，从而改善了MgO晶粒之间的键合度。