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Infrared Extinction Characteristic of Nanometer Aluminas
Author(s): 
Pages: 312-315
Year: Issue:  5
Journal: ENERGETIC MATERIALS

Keyword:  无机非金属材料纳米氧化铝红外气溶胶KBr压片消光系数透过率;
Abstract: 利用傅里叶变换红外光谱仪在中型烟幕试验柜中,对八种α型和γ型纳米氧化铝粉体气溶胶在3~5 μm与8~14 μm波段的红外消光特性进行了测试对比.利用KBr压片法测试了样品的红外光谱,给出了样品的晶型、平均粒度和比表面积等特征数据.实验结果表明,纳米氧化铝对红外具有良好的消光作用.纳米氧化铝气溶胶在3~5 μm和8~14 μm波段的最大质量消光系数分别为1.798 m2·g-1和1.940 m2·g-1;γ型纳米氧化铝的红外平均透过率普遍小于α型;比表面积越大、纳米氧化铝粒子平均直径越小对红外的消光性能就越显著.
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