摘要
在15 mL的不锈钢反应釜中,利用无水三氯化铝与叠氮化钠在无溶剂的条件下直接反应,合成出了六方结构氮化铝泡沫材料,反应温度650℃,反应时间3 h.扫描电子显微镜测试结果显示,该试样呈现泡沫状外貌特征.X射线衍射结果表明该试样为六方结构.不同温度条件下的吸收谱表明在202 nm附近存在尖锐的吸收峰.红外吸收谱中存在1381 cm-1和730 cm-1两个吸收峰.同时,提出了六方结构氮化铝泡沫材料的合成机理.
In a stainless steel autoclave of 15 ml capacity, pure hexagonal aluminum nitride （h-AlN） foam has been synthesized by direct reaction of AlCb with NaN3 in non-solvent system at 650 ℃ for 3h. The scanning electron microscopy （SEM） shows that the obtained foam material has characteristic sponge-like morphology. The results of X-ray diffraction （XRD） indicate that the AlN foam has a pure hexagonal structure. The absorption spectra at various temperatures indicate that there is a relatively strong absorption peak at about 202 nm. The infrared absorption spectrum shows that the foam has two absorption peaks, centered at 1381 cm^-1 and 730 cm^-1 respectively. In addition, a possible synthesis mechanism for h-AlN foam is discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第9期6403-6407,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10474078)资助的课题~~
