CAJ | 학술논문

采用水热法合成了准六角形片状勃姆石，用 TEM、XRD 等技术对其生长过程进行了研究。结果表明，勃姆石的生长过程包含4个阶段：形核及晶核的生长、晶粒的快速生长、缓慢生长和再生长。形核及晶核的生长阶段，晶粒各晶面的生长行为基本一致。其他生长阶段，各晶面的生长行为呈现显著差别。经电子束辐照后，勃姆石可以转变为γ-Al2O3。
채용수열법합성료준륙각형편상발모석，용 TEM、XRD 등기술대기생장과정진행료연구。결과표명，발모석적생장과정포함4개계단：형핵급정핵적생장、정립적쾌속생장、완만생장화재생장。형핵급정핵적생장계단，정립각정면적생장행위기본일치。기타생장계단，각정면적생장행위정현현저차별。경전자속복조후，발모석가이전변위γ-Al2O3。
The platy boehmite with quasi-hexagonal shape was synthesized by hydrothermal method. The growth process was investigated by transmission electron microscopy and X-ray diffraction techniques. The results show that the growth process consists of four steps:nucleation and nucleus growth, fast growth of crystal particle, slow growth of crystal particle and regrowth of crystal particle. Different crystal planes exhibit consistent growth behavior in the step of nucleation and nucleus growth, but obviously different growth behavior in the other growth steps. The boehmite was transformed toγ-Al2O3 by the electron beam irradiation.