The arc melted and drop tube processed Cu – 68.5 at. % Co alloy was subjected to differential thermal analysis (DTA). liquidus temperature determined from the DTA curves of melt sample (1664 K) found be close phase diagram estimate 1662 K. In contrast, as a result liquid separation in drop-tube samples, values obtained powders were much lower, mainly because compositions demixed phases varied t...

A complex of Cu(II) with 1-(6-HydroxyNaphthalen-2-yl) Butane-1,3-Dione (HNBD) was synthesized and characterized by elemental analysis, IR, UV and DTA-TG-DTG techniques.    IR spectra as well as UV-visible absorption measurements indicated that Cu(II) ion was coordinated to the HNBD ligand. The TG-DTA-DTG curves showed that thermal decomposition o...

deterioration of soft magnetic properties of amorphous ribbons happens when oxygen atoms diffuse in matrix during heat treatment. in this research, surface oxidation of co67fe4cr7si8b14 amorphous ribbons prepared by planar flow melt spinning (pfms) process during crystallization was investigated. in the first step, thermal stability of the ribbons was studied by differential thermal analysis (d...

The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range and maximum rate. differential thermal analysis (DTA), scanning electron microscope (SEM) were used reveal nonisothermal isothermal nucleation, respectively. crystallization occurred at a high homogeneous rate spherulitic crystal growth morphology. Nanostructured samples obtained.

The present work investigates equilibrium conditions and dissociation enthalpy of hydrates formed from CO2-TBAB(tetra-n-butylammonium bromide)-water mixtures. Differential Thermal Analysis (DTA) was used for Hydrate-Liquid-Vapour (H-L-V) equilibrium condition determination in a TBAB concentration range from 4.43 to 9.01 wt% and in a CO2 pressure range from 0.3 to 2.5 MPa. The results showed tha...

Ionomers are generally described by copolymers having either acrylic or methacylic acid as one component and the other component is mostly either ethylene or styrene. The objective of this research was to study the thermal behaviour and stability of ionomers of styrene with some alkali metal acrylates. These materials have been synthesized by neutralization of the respective copoly...

Hydrothermal reaction of Zn(NO3)2·6H2O with 2,2′,3,3′-oxydiphthalic acid (H4odpa) and pyridine (py) at 120 ◦C yielded a one-dimensional metal-organic coordination polymer {[Zn2(2,2′,3,3′odpa)(py)3(H2O)]·H2O}n (1), which is further connected together through hydrogen bonds, π· · ·π and C−H· · ·π interactions to give a three-dimensional supramolecular network. The thermal stability of complex 1 w...

Abstract—Rare earths containing complex metal oxides have drawn much attention due to physical, chemical and optical properties which make them feasible in so many areas such as nonlinear optical materials and ion exchanger. We have researched a systematic study to obtain rare earth containing zirconium molybdate compound, characterization, investigation of crystal system and calculation of uni...

A cordierite powder was synthesized from a batch composition of talc, diatomite and alumina. Sintered samples of the synthesized cordierite were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), and Rietveld analysis. The XRD analysis showed hexagonal or a-cordierite (indialite) as a major phase along with MgAl2O4 spinel and cristobalite as secondary phases in the s...