电气石红外光谱和红外辐射特性的研究  

Study on Infrared Spectra and Infrared Radiation Characteristics of Tourmaline

作　　者：李雯雯[1] 吴瑞华[1] 董颖[2] 

机构地区：[1]中国地质大学珠宝学院,北京100083 [2]北京市财经学校,北京100006

出　　处：《高校地质学报》2008年第3期426-432,共7页Geological Journal of China Universities

基　　金：国家自然科学基金项目(40172104)资助

摘　　要：精确测试和研究了不同种属电气石的红外光谱特征及不同种属、不同温度条件下热处理电气石的红外辐射特性。结果表明：电气石具有高红外发射率的本质在于其晶体结构中的分子振动具红外活性；铁、镁电气石红外发射率相近，且都大于锂电气石的红外发射率；电气石热处理的温度与红外发射率之间存在一定的对应关系，随着热处理的温度的增加，红外发射率减小，当温度增大到800℃,发射率达到最大值，超过900℃，电气石开始分解，红外发射率开始下降；电气石在室温下最大单色辐出度相应的波长为9-10μm与绝对黑体9．72μm吻合较好，为良好的红外吸收与发射材料。This paper studies the infrared spectra （IS） characteristics of different tourmaline species, and the infrared radiation （IR） characteristics after heat treatment on tourmaline species at different temperatures. The results show that the high IR ratio of tourmaline is due to the infrared activity of vibration in its crystal structure. The IR ratio of Fe tourmaline is close to that of Mg tourmaline, and both are higher than that of Li tourmaline. The IR ratio of tourmaline has some relationship with heat treatment temperature： with increasing heat treatment temperature, the IR ratio decreases. When heated to 800℃, the IR ratio reaches a maximum; while heated to higher than 900℃, tourmaline begins to decompose and its infrared radiation ratio drops down. At the room temperature, the largest monochromatic radiation wavelength of tourmaline is between 9μm and 10 μm, which matches the wavelength （9.72μm） of the absolute blackbody very well. It demonstrates that tourmaline is a good material for infrared absorption and radiation.

关 键 词：电气石 红外光谱 红外辐射 

分 类 号：P578.953[天文地球—矿物学]