Results 181 to 190 of about 75,282 (220)

Analysis of Alloys Using DTA and TD Methods with Simultaneous Thermomagnetic Studies

Journal of Thermal Analysis and Calorimetry, 1999
A modified thermoanalyzer for investigation ferromagnetic materials as metals and alloys is described. Conventional analog phase detection technique is replaced by specialized digital one which added some new outstanding features of the instrumentation.
P. Myśliński, P. Kamasa, J. Vandlik
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TG-DTA/FT-IR method for analyzing thermal decomposition mechanism of polyesters

Journal of Thermal Analysis, 1993
An attempt to estimate the thermal decomposition mechanism of polymers using the simultaneous TG-DTA/FT-IR system was summarized. The library search of FT-IR spectra at various temperatures and of the subtraction spectrum obtained by subtracting the spectra at different temperatures were used to determine the types of evolved gases from poly(ethylene ...
R. Kinoshita, Y. Teramoto, H. Yoshida
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STUDY OF CLATHRATE HYDRATION OF CARBOXYLIC ION EXCHANGER BY DTA METHOD

Solvent Extraction and Ion Exchange, 2000
ABSTRACT The effect of ionic composition [(C4H9) 4N-, H + (C4H9)N- and H-forms] and degree of swelling of a polyacrylic ion exchanger on the formation and stability of crystalline clathrate hydrates is studied. The melting temperature of clathrates for ion exchanger in the mixed ion form is to a large extent determined by the ratio of counter-ions. For
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The acidity of dealuminated clinoptilolite investigated by DSC, DTA and TG methods

Thermochimica Acta, 1992
Abstract Dealuminated NH 4 + -clinoptilolite samples, prepared using (NH 4 ) 2 SiF 6 and calcined at various temperatures, were used for the investigation of acidity properties. The strength of the acid sites was measured by a combination of TG and DSC measurements.
F. Grejták, I. Horváth, M. Kubranová, J. Krajčovič   +3 more
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Calorific Value Determination of Coals by DTA and ASTM Methods. Comparative study

Journal of Thermal Analysis and Calorimetry, 2001
This research comprises the applicability of complex thermal analysis technique (TG/DTG, DTA) in the determination of calorific values of coals of different origin. The calorific values, those obtained by thermal analysis are compared with an adiabatic bomb calorimeter by the standard ASTM method, and the results are discussed.
M. V. Kök, C. Keskin
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Use of kinetic DTA and TG methods for compatibility tests on 2,4,6‐‐trinitrotoluene

Propellants, Explosives, Pyrotechnics, 1986
AbstractWe have investigated the suitability of thermoanalytical methods for compatibility tests on explosives and contact materials. DTA and TG curves of various materials were evaluated using two DTA and four TG methods and one DSC method. TNT was used as model substance.
M. Hemmilä, I. Nieminen, A. Kariniemi, J. Valkonen   +3 more
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Pyrolysis study of hydrophobic tholins By TG-MS, TG, DTA and DSC methods

Journal of Thermal Analysis and Calorimetry, 2012
This study presents the thermogravimetry (TG) of hydrophobic tholins, obtained from different simulation experiments of prebiotic synthesis carried out in a CH4/N2/H2 atmosphere with spark discharge activation of aqueous aerosols and liquid water. Differential thermal analysis and differential scanning calorimetry were also used to evaluate the thermal
José L. de la Fuente, Marta Ruiz-Bermejo, César Menor-Salván, Susana Osuna-Esteban   +3 more
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Kinetic study of solid-solid reactions by DTA method (BaCl2 - KNO3 system)

Thermochimica Acta, 1988
Abstract The kinetic io parameters of the reaction BaCl 2 +2KNO 3 → Ba(NO 3 ) 2 + 2KCl have been evaluated by the DTA method. The crystalline phases of the reaction mixture have been identified using the X-Ray diffraction method.
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ChemInform Abstract: DTA as a Method of Studying Chemical Reactions at High Pressures.

ChemInform, 1987
AbstractTwo DTA techniques which allow to study chemical reactions under high pressure in situ are described.
V. V. AVDEEV, V. Z. MORDKOVICH
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Quantitative Phase Analysis in the System CaSO4.xH2O by TG-DTA Methods

1980
The quantitative determination of different components in the system CaSO4.xH2O is necessary for the production and application of technical plaster qualities. Applying the common method this analysis needs four divergently prepared samples and a period of about 200 hours. Using a simultaneous TG-DTA apparatus with water vapour atmosphere on the sample,
Winfried Hädrich, Erwin Kaisersberger
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