高等学校化学学报 ›› 1982, Vol. 3 ›› Issue (4): 443.
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张启运, 李文化
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Zhang Qiyun, Li Wenhua
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摘要： 目测变温法,差热分析法,配合X射线粉末相分析研究了KNO3-KCl体系的状态图。体系中有固液异组成化合物KNO3·KCl生成。它在359℃熔化分解为KCl和转熔点液相P。其组成含KCl 12.5Wt%。此化合物在124℃和271℃分别发生两次多晶转变。化合物与KNO3在含KCl 5.0%处形成低共熔点E,其温度为318℃。体系中可能存在介稳化合物4KNO3·KCl,它在342℃熔化分解。
Abstract: Astudy has been made of binary salts'system KNO3-KCl by the methods of DTA, visual polythermal and X-ray powder diffraction. An incongruently melting compound KNO3·KCl which decomposes at 359℃ andtransittes at 124℃ and 271℃ has been found in the system. Peritectic point of this compound lies in the composition containing 12.5wt% KCl. The values of the eutectic between KNO3 and KNO3·KCl are 318℃ and 5.0wt% KCl. Another metastable compound 4KNO3 KCl incongruently melting at 342℃ may also existes in this system. From the results of DTAand X-ray diffraction, no evidence was found for solid solution on the both sides of KNO3 and KCl.
TrendMD:
张启运, 李文化. KNO3-KCl二元熔盐体系相图的研究. 高等学校化学学报, 1982, 3(4): 443.
Zhang Qiyun, Li Wenhua . A STUDY ON THE PHASE DIAGRAM OF BINARY SALTS SYSTEM KNO3-KCl. Chem. J. Chinese Universities, 1982, 3(4): 443.
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