Thermobarometric study of KNO3 phase transitions

被引:7
作者
Font, J
Muntasell, J
机构
关键词
potassium nitrate; phase transitions; thermobarometric measurements; metastability; molar volume;
D O I
10.1016/S0040-6031(97)00024-5
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this work, a thermobarometric study of bulk KNO3 submitted to pressure less than 150 MPa has been performed by means of the Metabolemeter system. The effect of pressure on the transitions between the different phases I, II and III have been analysed. Endothermic transformation from II to I takes place through phase III. On cooling from phase I, a coexistence between the phases II and III, metastable at room temperature, is always obtained. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:167 / 170
页数:4
相关论文
共 16 条
[1]
THE METABOLEMETER .1. A NEW APPARATUS TO DETECT THE PHASE-TRANSITIONS OF MESOGENS [J].
BUISINE, JM ;
SOULESTIN, B ;
BILLARD, J .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1983, 91 (1-2) :115-127
[2]
TRANSITION RATES OF KNO3 HIGH-PRESSURE POLYMORPHS [J].
DAVIS, BL ;
ADAMS, LH .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1963, 24 (07) :787-&
[3]
PHASE-TRANSITIONS IN POTASSIUM-NITRATE [J].
DESHPANDE, VV ;
KARKHANAVALA, MD ;
RAO, URK .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 1974, 6 (06) :613-621
[4]
VARIATIONS IN COOLING TRANSITIONS OF POTASSIUM-NITRATE [J].
GARN, PD ;
DIAMONDSTONE, BI ;
MENIS, O .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 1974, 6 (06) :623-630
[5]
RELATION OF QUANTITATIVE DIFFERENTIAL THERMAL-ANALYSIS TO STUDY ON POLYMORPHISM OF POTASSIUM-NITRATE AT ATMOSPHERIC-PRESSURE [J].
HARMELIN, M .
JOURNAL OF THERMAL ANALYSIS, 1972, 4 (04) :403-&
[6]
STABILITY OF THE FERROELECTRIC PHASE IN POLYCRYSTALLINE KNO3 INVESTIGATED BY PHOTOACOUSTIC AND CALORIMETRIC TECHNIQUES [J].
ISAAC, J ;
PHILIP, J .
JOURNAL OF APPLIED PHYSICS, 1991, 69 (11) :7765-7767
[7]
1ST-PRINCIPLES STUDY OF PHASE-TRANSITIONS IN KNO3 [J].
LU, HM ;
HARDY, JR .
PHYSICAL REVIEW B, 1991, 44 (14) :7215-7224
[8]
MAZIERES C, 1961, ANN CHIM, P598
[9]
A STUDY OF THE POLYMORPHISM OF POTASSIUM-NITRATE STARTING FROM ROOM-TEMPERATURE AND AT ATMOSPHERIC-PRESSURE [J].
MUNTASELL, J ;
NAVARRO, J ;
CESARI, E .
THERMOCHIMICA ACTA, 1985, 83 (02) :173-179
[10]
CRYSTAL-STRUCTURES OF GAMMA-KNO3 AND BETA-KNO3 AND ALPHA]-GAMMA]-BETA PHASE-TRANSFORMATIONS [J].
NIMMO, JK ;
LUCAS, BW .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1976, 32 (JUL15) :1968-1971