X-RAY-DIFFRACTION ANALYSIS OF THE AMMONIUM-NITRATE IV-III-II AND IV-II PHASE-CHANGES UNDER CONTROLLED HUMIDITY CONDITIONS

被引：0
|
作者：
BOEYENS, JCA [1 ]
FERG, E [1 ]
LEVENDIS, DC [1 ]
SCHONING, FRL [1 ]
机构：
[1] UNIV WITWATERSRAND,DEPT CHEM,CTR MOLEC DESIGN,PO WITS 2050,JOHANNESBURG 2001,SOUTH AFRICA
来源：
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE | 1991年 / 44卷 / 02期
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The first phase transition above room temperature of ammonium nitrate has been investigated as a function of humidity and sample preparation by means of a Weissenberg camera, modified to record the powder diffraction pattern as a function of temperature. Heterogeneous nucleation at the grain surface, inferred from the observed texture that develops in the powder specimens, is related to the effect of humidity during sample preparation on the stability of prills or powders.
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页码：42 / 46
页数：5
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