###
气象:2016,42(1):74-79
本文二维码信息
码上扫一扫!
含AgI焰剂成冰性能与物化特征的实验研究
(中国气象科学研究院,北京 100081)
Laboratory Study on Nucleating Properties and Microstructure of AgI Pyrotechnics
(Chinese Academy of Meteorological Sciences, Beijing 100081)
摘要
图/表
参考文献
相似文献
本文已被:浏览 962次   下载 1548
投稿时间:2014-12-27    修订日期:2015-05-27
中文摘要: 利用CAMS的1 m3等温云室系统筛选出新型高效AgI焰剂WMC IN 001和WMC IN 002。检测结果表明,它们具有较高的成核率,在-15℃时达到1015 g-1 AgI量级,尤其在-7℃时WMC IN 001的成核率仍可达到1014 g-1 AgI量级。同时给出对节银剂配方和2011年市场上主要的几种催化剂的检测结果进行对比。WMC IN 001和WMC IN 002的成冰速率较慢,在各检测温度的成冰速率差异较小,均在40~55 min。利用冷场发射扫描电镜和能谱仪对WMC IN 001燃烧产生的气溶胶粒子作了物化特征分析,粒子分布在0.02~0.60 μm,具有两个典型的模态:0.02~0.10 μm的较小的粒子和0.20~0.55 μm的较大的粒子,均立方直径为0.2472 μm。WMC IN 001气溶胶粒子明显偏大,小粒子相对较少,这可能是其成冰速率偏慢的原因之一。
Abstract:Two formulations (WMC IN 001 and WMC IN 002) of high efficient AgI pyrotechnics used in weather modification have been obtained after a number of screen tests were carried out in CAMS 1 m3 isothermal cloud chamber. The effectiveness can reach to 1014 g-1 AgI at temperatures of -7℃ and colder for WMC IN 001, and it can reach up to 1015 g-1 AgI at -15℃. The foreign pyrotechnic was made according to the formulation of silver spare (USSR). The ice nucleating properties of silver spare and other five formulations of AgI pyrotechnics in the marketplace in 2011 was tested in the same chamber for comparison with the new pyrotechnics. The results show that the nucleating rates are very low for WMC IN 001 and WMC IN 002, and change less (in 40-55 min) in the temperature range between -7 and -20℃. The aerosol particles produced by WMC IN 001 are identified by environmental scanning electron microscope (ESEM) and energy disperse spectroscopy (EDS). The particle sizes are within 0.02-0.60 μm in diameter, and the mean cube root diameter is 0.2472 μm. WMC IN 001 aerosol has a pronounced bimodal size distribution with particles in the small diameter mode between 0.02-0.10 μm and particles constituting the mode between 0.20-0.55 μm. The relatively large particle size may be one cause for the low nucleating rates.
文章编号:     中图分类号:    文献标志码:
基金项目:国家自然科学基金面上项目(41275149)和公益性行业(气象)科研专项(GYHY201106031和GYHY201306041)共同资助
引用文本:
孔君,王广河,房文,苏正军,2016.含AgI焰剂成冰性能与物化特征的实验研究[J].气象,42(1):74-79.
KONG Jun,WANG Guanghe,FANG Wen,SU Zhengjun,2016.Laboratory Study on Nucleating Properties and Microstructure of AgI Pyrotechnics[J].Meteor Mon,42(1):74-79.