Determination of Solubility of GaN in Ammonobasic Systems
Determination of Solubility of GaN in Ammonobasic Systems
复制标题
氨体系中 GaN 溶解度的测定
DOI：
10.1007/978-3-030-56305-9_9
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
H. Baser
中科院分区：
文献类型：
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作者：
W. Schwieger;H. Baser
本文研究了GaN在350-550 °C温度范围内在MNH_2-GaN-NH_3（M= Na，K）体系中的溶解度。矿化剂NaNH 2和KNH 2的氨填充度目标值分别为45%和55%。矿化剂浓度在所有温度下相对于液氨从1 M变化到3 M。已经发现，在400-600 °C的范围内，GaN与作为矿化剂的NaNH 2的溶解度随着温度的升高而略微增加，但通常非常低。没有观察到溶解度对矿化剂浓度的依赖性。氨填充度从45%增加到55%仅略微增加GaN的溶解度。KNH 2作为矿化剂的使用带来了GaN溶解度的巨大增加。在这里，7倍以上的溶解度比NaNH 2的观察。在400-550 °C的温度范围内，以KNH_2为矿化剂，测定了GaN的逆溶解度行为。在350-400 °C的范围内，溶解度显示出正的温度依赖性。在400 °C时达到最大溶解度。发现GaN在400 °C下的溶解度比在550 °C下高三倍。
In this study, the solubility of GaN in the ammonobasicMNH2–GaN–NH3(M= Na, K) systems in the temperature range of 350–550 °C was studied. The target value for the ammonia filling degree was 45% and 55% for mineralizers NaNH2and KNH2, respectively. The mineralizer concentration was varied at all temperatures from 1 M to 3 M, in respect to the liquid ammonia. It has been found that the solubility of GaN with NaNH2as a mineralizer increases slightly with increasing temperature in the range 400–600 °C, but is generally very low. A dependence of solubility on mineralizer concentration was not observed. An increase in the ammonia filling degree from 45% to 55% only slightly increased the solubility of GaN. The use of KNH2as a mineralizer brought an enormous increase in the solubility of GaN. Here, 7 times higher solubilities than those for NaNH2were observed. A retrograde solubility behavior of GaN in the temperature range 400–550 °C was determined for KNH2as a mineralizer. In the range of 350–400 °C the solubility showed a positive temperature dependence. The maximum solubility was reached at 400 °C. The solubility of GaN at 400 °C was found three times higher than at 550 °C.
DOI：
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发表时间：
2006
期刊：
影响因子：
--
作者：
Isao Tamai;Hideki Hasegawa;田中克史;Y. Kagamitani
通讯作者：
Y. Kagamitani