Properties of MgO transparent ceramics prepared at low temperature using high sintering activity MgO powders
Properties of MgO transparent ceramics prepared at low temperature using high sintering activity MgO powders
复制标题
高烧结活性MgO粉体低温制备MgO透明陶瓷的性能
DOI:
10.1111/jace.17267
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发表时间:
2020-09
影响因子:
3.9
通讯作者:
Jiang Wan
中科院分区:
文献类型:
--
作者:
Wei Yujing;Gu Shijia;Fang Hailiang;Luo Wei;Zhang Xin;Wang Lianjun;Jiang Wan
Transparent MgO ceramics are successful fabricated via spark plasma sintering at lower temperature using the high sintering activity powders synthesized by precipitated method. The samples were detected by XRD, SEM, TEM, BET, UV‐Vis‐NIR, microhardness, and so on. The results show that all ceramics prepared at 700°C‐900°C are visually transparent and the sample sintered at 860°C for 5 min exhibits the superior transmittance of 60% (800 nm). It is also found that the mechanical and thermal properties of MgO ceramics are all increasing firstly and then decreasing with the increase in the sintering temperature. And the maximum value of hardness, fracture toughness, MSP strength, and Young's modulus of MgO ceramics is 8.25 GPa, 2.01 MPa·m1/2, 206 MPa, and 286 GPa, respectively. Moreover, the thermal conductivity of MgO ceramics sintered at 860°C can reach 48.4 W/mK at room temperature.
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