As a functional inorganic material, LiAlO2 was focused on widely, especially in the field of tritium breeder of fusion reactor. In this article, the proper reaction conditions and mechanism to synthesis the γ LiAlO2 ...As a functional inorganic material, LiAlO2 was focused on widely, especially in the field of tritium breeder of fusion reactor. In this article, the proper reaction conditions and mechanism to synthesis the γ LiAlO2 by solid state method are considered. In the experiments, it has been found that the phase of β and γ LiAlO2 are only produced by the reaction of LiOH and Al2O3, while the α and γ LiAlO2 can be obtained by the reaction of Li2CO3 and Al2O3. As compared with Li2CO3 and Al2O3 reacted at 900～1000℃ for the preparation of γ LiAlO2, the γ LiAlO2 can also be made by the reaction of LiOH and Al2O3 at some more lower temperatures that is due to the bulk diffuse mechanism. But the former can get better crystal and have smaller particles for the mechanism of surface fast reaction. As a result, the sub micron γ LiAlO2 powders with the diameter less than 0.3μm are obtained.展开更多
用高温固相合成法制得Li Al O2:Fe3+,通过正交实验确定最佳含量和反应条件:1 mol体系中,n(Li)/n(Al)=0.93,n(Fe)=0.006 mol,并在1470℃下灼烧3h。XRD分析确证为四方晶系。在λem=743nm监测下,激发光谱峰为266nm;且在λex=266nm的激发下...用高温固相合成法制得Li Al O2:Fe3+,通过正交实验确定最佳含量和反应条件:1 mol体系中,n(Li)/n(Al)=0.93,n(Fe)=0.006 mol,并在1470℃下灼烧3h。XRD分析确证为四方晶系。在λem=743nm监测下,激发光谱峰为266nm;且在λex=266nm的激发下,发射光谱峰为743nm,色坐标x=0.7352,y=0.2648。展开更多
本文系统研究了L iA lO2晶体及掺钛0.2%原子分数L iA lO2晶体的水解性能,用原子力显微镜对(100)晶片在不同水解时间下的表面形貌进行了观察,对比发现这两种晶体的(100)面均具有极性和易水解性。同时观察到掺钛L iA lO2晶体的抗水解性比...本文系统研究了L iA lO2晶体及掺钛0.2%原子分数L iA lO2晶体的水解性能,用原子力显微镜对(100)晶片在不同水解时间下的表面形貌进行了观察,对比发现这两种晶体的(100)面均具有极性和易水解性。同时观察到掺钛L iA lO2晶体的抗水解性比纯L iA lO2晶体更好,因为掺钛L iA lO2晶体有更多的L i空位,水解的活性得到降低。展开更多
文摘As a functional inorganic material, LiAlO2 was focused on widely, especially in the field of tritium breeder of fusion reactor. In this article, the proper reaction conditions and mechanism to synthesis the γ LiAlO2 by solid state method are considered. In the experiments, it has been found that the phase of β and γ LiAlO2 are only produced by the reaction of LiOH and Al2O3, while the α and γ LiAlO2 can be obtained by the reaction of Li2CO3 and Al2O3. As compared with Li2CO3 and Al2O3 reacted at 900～1000℃ for the preparation of γ LiAlO2, the γ LiAlO2 can also be made by the reaction of LiOH and Al2O3 at some more lower temperatures that is due to the bulk diffuse mechanism. But the former can get better crystal and have smaller particles for the mechanism of surface fast reaction. As a result, the sub micron γ LiAlO2 powders with the diameter less than 0.3μm are obtained.
文摘用高温固相合成法制得Li Al O2:Fe3+,通过正交实验确定最佳含量和反应条件:1 mol体系中,n(Li)/n(Al)=0.93,n(Fe)=0.006 mol,并在1470℃下灼烧3h。XRD分析确证为四方晶系。在λem=743nm监测下,激发光谱峰为266nm;且在λex=266nm的激发下,发射光谱峰为743nm,色坐标x=0.7352,y=0.2648。
文摘本文系统研究了L iA lO2晶体及掺钛0.2%原子分数L iA lO2晶体的水解性能,用原子力显微镜对(100)晶片在不同水解时间下的表面形貌进行了观察,对比发现这两种晶体的(100)面均具有极性和易水解性。同时观察到掺钛L iA lO2晶体的抗水解性比纯L iA lO2晶体更好,因为掺钛L iA lO2晶体有更多的L i空位,水解的活性得到降低。
