Effect of oxygen partial pressure on temperature for onset of flash sintering 3YSZ
Effect of oxygen partial pressure on temperature for onset of flash sintering 3YSZ
复制标题
氧分压对闪速烧结3YSZ起始温度的影响
DOI:
10.1016/j.jeurceramsoc.2017.09.009
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发表时间:
2018-02
影响因子:
5.7
通讯作者:
Yiguang Wang
中科院分区:
文献类型:
--
作者:
Dianguang Liu;Yejie Cao;Jinling Liu;Yan Gao;Yiguang Wang
In this paper, it is demonstrated that in an oxygen-enriched environment, the oxygen partial pressure affects the onset temperature of flash sintering of 3 mol% yttria-stabilized zirconia (3YSZ). Flash sintering experiments were performed with oxygen partial pressures in the range of 0.25–1 atm. The results indicate that the onset temperature increased by increasing oxygen partial pressure. According to the plots of the conductivity as a function of temperature, the oxygen partial pressure might affect the onset temperature, by changing the conductivity in the pre-flash stage. Combined to the analysis of the law of mass action, it was established that electron conduction might also represent a critical parameter during the pre-flash stage of flash sintering, excluding the oxygen vacancy conduction.
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