电气石超细粉碎机械力化学效应研究  

Mechanochemical Effects Brought from Superfine Grinding Tourmaline

作　　者：李雯雯[1] 吴瑞华[2] 刘贞 

机构地区：[1]中国地质博物馆,北京100034 [2]中国地质大学,北京100083 [3]中材人工晶体研究院,北京100018

出　　处：《硅酸盐通报》2010年第1期66-71,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(No.40672204);科技部国家科技基础条件平台工作重点项目(No.2005DKA21405)

摘　　要：本文对电气石超细粉碎机械力化学效应进行了研究,采用XRD、FTIR、DTA-TC等测试方法对超细粉体进行了表征,并对粉碎前后的电气石进行了磁感应强度、红外辐射和诱发负离子功能的对比测试,研究表明:在研磨过程中电气石晶格发生膨胀,属晶格畸变范畴,一些振动精细结构消失,谱峰出现简并和宽化的特征,[SiO4]引起的谱带逐渐消失和红移;超细粉体除脱吸附水外的吸热效应的最大值温度有所降低,由原样的1004℃降低至907℃;粉碎后粉体矫顽力增大;超细粉碎导致晶格周期性的破坏,提高了晶格极性振动的非简谐效应,有效改善电气石在一定波长范围内的红外辐射率;随粒度减小,电气石所诱发的负离子在一定程度上增多,但当粒径小到一定程度则开始减小。Mechanochemical effects brought from superfine grinding tourmaline were researched by XRD,FTIR,DTA-TC and carried through contrast tests of the pre and post grinding particle. The crystal lattice has inflation,but it is the lattice distortion category. Ultrafine grinding causes some vibration and fine structure vanishing.The peak present the characteristic which degenerate and wide,the band which ／[SiO4／] causes vanishes and red shift. The mechanical energy transforms to internal energy of tourmaline,which causes heat absorption effect maximum value temperature to have reduces （1004 ℃ reduces by the original 907 ℃）.Indicated to the smallest particle size tourmaline magnetism nature＇s research,tourmaline coercive force increases.The crystal lattice periodic destruction,enhances the crystal lattice polarity vibration non-simple harmonics effect and improves the tourmaline in certain wavelength range infrared emissivity effectively. Ultrafine powder of tourmaline produces the anoin increases to a certain extent. When the particle size slightly increases to certain extent,the anoin amount reduces.

关 键 词：电气石 超细粉体 机械力化学效应 

分 类 号：P578[天文地球—矿物学]