Development of novel solid nitride ion conductor

在炼铁过程中，控制铁液中氧气、氢气和氮气的含量是一个非常重要的问题，因为它们直接影响到炼铁的质量。然而，在这些气体中，由于还没有发现能够测量氮气量的氮离子导电材料，因此目前无法对铁水中的氮气进行传感。在本工作中，我们试图寻找新的氮离子导体，以开发氮气传感器。因此，在1000oC以下，我们不能清楚地观察到Si3N4和Ga3N4中氮离子的传导，我们发现在高于1000oC的温度下可以观察到氮离子的传导表达

In the case of iron manufacturing, it is very important issue to control the contained amount of oxygen gas, hydrogen gas and nitrogen gas solved in the molten iron since these directly affect the quality of the manufactured iron. However, among these gases, the sensing of nitrogen gases in the molten iron is impossible at present since the nitride ion conducting material, which enables us to measure the nitrogen gas amount, has not been found. In this work, we tried to find the novel nitride ion conductor in order to develop nitrogen gas sensor. As a result, we could not clearly observe the nitride ion conduction in Si3N4 and Ga3N4 below 1000oC, and we found that the expression of the nitride conduction might be observed at higher temperature than 1000oC