Presents the adsorption and the sedorption of CO2 on a catalyst
Use of PCTPro with the Microdoser attachment for measuring adsorption of hydrogen on microporous materials
Presents the decomposition of paper
Use of PCTPro as a TPD technique for metallic hydrides
Presents the decomposition of tobacco with analysis of evolving gases
Sintering is a process for making objects from powder, increasing the adhesion between particles as they are heated. It is used with ceramic powders and in powder metallurgy. Sintering is related to diffusion. Tungsten carbide is generally prepared from a powder containing WC and Cobalt as a bind.
Carbon fiber is most notably used to reinforce composite materials, particularly the class of materials known as carbon fiber or graphite reinforced polymers. A common method of making carbon filaments is the oxidation and thermal pyrolysis of polyacrilonitrile (PAN). The interest of the TG + FTIR is to quantify the non pyrolyzed material and to identify the substances remained with the final carbon fiber.
Shows the curing of an epoxy resin and the Tg is determined during the first heating
The purpose of this test is to determine the absorption of humidity of a lyophilized pharmaceutical sample by TG-DSC.
Presents the melting of different polyethylenes
A flow calorimetric technique was used to measure the heat of absorption of CO2 in aqueous solutions of AMP.
Presents the oxidation of different polyolefines
The oxidation behavior of the 9%Cr steel P91 was studied by thermogravimetry in model N2-O2-H2O gas mixtures at 650°C
Presents the transitons observed during the austenite to martensite transitions
High sensitivity differential scanning calorimetry was employed to investigate the interaction between dimyristoylphosphatidylcholine (DMPC) liposomal bilayers and the model steroid beclometasone dipropionate (BDP).
The variation of enthalpy of a plaster containing phase change materials is determined by DSC.
The variation of enthalpy of a phase change material is determined by DSC at a very slow scan rate (0,05K/min = 3K/h) in order to approach, as well as possible, the real condition of use of material.
decomposition of azides
oxidation of a metallic plate
Thermal effects of hydrogen absorption-desorption in CeNi2 were studied by calorimetry.
The adsorption of refractory benzothiophenic type S compounds present in diesel was studied using a liquid phase flow calorimetry technique with hexadecane as a solvent and zeolites as sorbents.
The aim of these analysis is to identify the evolve gas from a cement sample by thermogravimetry coupled with FTIR spectrometry.
TGA was used to study the oxidation behavior and its improvement thanks to the alumina deposit on austenitic stainless steel.
Presents the determination of the droplet size of an emulsion by DSC.
The aim of this study is to determine the phase diagram of PEG (polyethylene glycol) / C12E6 (n-dodecyl hexaoxyethylene glycol monoether) water solution.
DSC was used to study the adsorption and desorption of hydrogen on an Mg alloy when the pressure is increased to 20 bar and the temperature stabilized at 400°C.
Oxygen stoichiometry of LaGa0.65Mg0.15Ni0.20O(3-d) was estimated by TGA
Measurements of the CO2 hydrate dissociation enthalpy were performed by DSC.
Simultaneous TG/DSC was used before and after a complete carbonation of bottom ash in order to investigate calcite formation resulting from accelerated carbonation.
The aim of this paper is to study by TG-DSC a residue originate from a municipal solid waste incinerator (MSWI) after installing a wet flue gas cleaning system.
H-titanate nanotubes are synthesized from Na-titanate nanotubes and then they are analyzed by thermogravimetry.
The objective of this work is to determine, by thermogravimetry, the difference in the hydration products between the mixtures of hydratable alumina with reactive magnesia and those of hydratable alumina with deadburnt or fused magnesite powder.
In order to study the effect of TiN on AlON oxidation properties, AlON-TiN composites plates have been analyzed by thermogravimetry in the temperature range 1100-1500°C.
DSC technique is used as a systematic method of investigation of the influence of sonication time on the phase transition of DODAB vesicles
The aim of this paper is to predict the behavior of sewage sludges, the principal waste produced by a sewage treatment plant, in combustion or pyrolysis by thermogravimetric analysis and determine, from that, the parameter PII/(PI+PII).
Thermogravimetric method was used to obtain previous information about the thermal decomposition process of the tyre material. Then, the gas generated during the pyrolysis was analyzed by gas chromatography.
DSC measurements were used to investigate the transformation from the amorphous to the crystalline state during heating of Fe75Si9B16
In order to predict the in pile behaviour of nitride fuels, the thermophysical properties of plutonium-zirconium nitride (0-25at.% Pu), in particular the density, were measured on pellets.
Enthalpies of mixing of the lead-free soldering Ag-Pd were measured by the drop calorimetric method
Experiments were carried out in a TMA to explore the influence of wide grain size distribution on sintering shrinkage of WC-Co materials.
The formation of barium titanate powder by solid-state reaction and oxalate coprecipitation route is investigated by TG-DTA
DSC was used to bring out the incomplete transformation of a TiNi shape memory alloy during an incomplete cycle on heating and cooling
DSC was used to determine the temperature memory effect in CuAlNi and CuZnAl shape memory alloys
Presents the hydration process of calcium phosphate cement by calorimetry
TGA was used as a tool to measure the SWCNTs content, the amounts of nontubular carbon impurities and the metal content in SWCNTs samples
The use of C80 heat flux calorimeter with a very low scanning rate provides an easy approach to identify and determine the intrinsic characteristics of an unstable substance associated with the exothermic decomposition in a closed vessel
The reactivity of asphalt-salt mixtures (ASMs) was measured by using a heat flux calorimeter (C80) and then, the C80 data was used to calculate the SADT (self-accelerating decomposition temperature) of simulated ASMs.
TSC technique is particularly suited for detection of low levels of amorphicity in crystalline structure. Example given here is the lactose, a classical excipient used in the pharmaceutical domain. We have chosen this molecule as a model to demonstrate the sensitivity of our TSC II
testing thermal conductivity on ceramics
When a drug is transport or store in dry ice, the carbon dioxide can be adsorbed on the drug. In order to simulate these conditions, the sample is studied at -70°C under CO2 in a thermobalance. The mass variation brings out the adsorption.
Presents the influence of wood aqueous extractives on the hydration of plaster by calorimetry
Study by thermoanalytical techniques the interaction and the reaction between silicon nitride and carbon
Presents the transitions observed in 70S ribosomes and 50S subunits of E. coli.
The DSC approach was used to investigate ribosome’s cores deprived of proteins as a consequence of LiCl treatment.
Ti3Si(Al)C2 solid solutions with different Al contents were prepared by substituting a small amount of Si with Al. The results demonstrated that the substitution of Si with 10 at % of Al dramatically improved the oxidation resistance and eliminated TiC. The oxidation behavior of the Ti3Si0,9Al0,1C2 solid solution in air was then investigated at 1000-1350 °C. The oxide layers were dense, adher ent and resistant to thermal cycling.
the oxidation behaviour of Ti3AlC2 powders has been investigated in air by means of simultaneous TGA-DSC, XRD, Raman spectra, SEM, EDS and BET specific surface measurement to understand the intrinsic oxidation behaviour of this newly developed ternary compound.
TSC technique is here used as a quantitative method, indeed it has been possible to quantify low level of amorphous phase (1%) in a crystalline pharmaceutical compound.
Presents the decomposition of nitrocellulose at different heating rates by calorimetry
Several factors could modify the stability of Ascorbic Acid, the aim of this study is to test the impact of hydrogen peroxide on its decomposition thanks to microcalorimetric technique.
Present the phase transition of a solution of amphiphilic polymer studied by microDSC
Presents the sintering of Silicon Carbide (SiC)
Presents hydrogen absorption on an alloyed mixtures of Ti-Mg-Ni by DSC
A thermite reaction (a type of aluminothermic reaction) is one in which aluminium metal is oxidized by an oxide of another metal, most commonly iron oxide. Although the reactants are stable at room temperature, when they are exposed to sufficient heat to ignite, they burn with an extremely intense exothermic reaction. Thermite contains its own supply of oxygen, and does not require any external source (such as air). Consequently, it cannot be smothered and may ignite in any environment (it will burn perfectly well underwater, for example), given sufficient initial heat.
Such a reaction can be successfully be studied by drop calorimetry and its heat measured.
High-temperature differential thermal analysis provided data on phase transitions in zirconia and yttria. The tetragonal form of ZrO2 transforms to the cubic fluorite structure at 2311±15°C with an enthalpy of 3.4±2 kJ/mol. Cubic C-type Y2O3 transforms, probably to the fluorite structure, at 2308±15°C with DH=47.7±3.0 kJ/mol. This high-temperature polymorph melts at 2382±15°C with an enthalpy of fusion of 35.6±3.0 kJ/mol.
Presents the determination of cristalline / amorpous drug by TSC method
Presents the study of collagen by TSC
Presents a comparison of the determination of the Tg of a polyamide by both DSC and TSC methods
Presents the analysis of the behaviour of a drug under controlled humidity : it is done with C80 calorimeter connected to a wetsys
Novel setup for gas adsorption microcalorimetry, unique to UC Davis Thermochemistry Facility, employs Micromeritics ASAP 2020 as dosing system and Setaram Calvet-DSC111 operated in isoperibol mode as calorimetric detector for heat of adsorption.
Before carrying out chemical processes in pilot or production plants, they are subject to a thorough risk analysis. As a part of the risk analysis related to a chemical process, thermochemical data are needed to assess the thermal risks.
The heat of the reaction, the energy released in case of triggering the decomposition reaction, the amount of gas released during a runaway, etc are current questions during a risk analysis in a the chemical industry.
The Swiss Institute of Safety and Security in Basle has designed in collaboration with Setaram a new Mini-Reactor adapted to the study of chemical reactions in order to determine rapidly the data required for a first screening of the thermal risks.
Presents the wetting of TiO2 by water on using an ampoule mixing vessel
Presents the wetting of carbon by water on using an ampoule mixing vessel
Presents the determination of Cp of hastelloy between -50°C and 200°C
Presents the determination of Cp of nickel between 50°C and 450°C
Presents the method of purity determination by DSC using the Van t’Hoff relation. Application to different samples of phenacetin
Presents the synthesis of 2, 3, 6-trimethyl, 4-nitrosophenol with DRC
Presents the expansion of steel up to 1400°C : shows a phase transition
Presents the DSC curve obtained with LabsysDSC showing the Tg of an epoxy resin
Presents the calorimetric curve obtained during the self discharge of a lithium battery
Presents the hydrolysis of acetic anhydride at 10°C, 25°C and 40°C
Presents the esterification of propanoic anhydride by 2-butanol
Presents the reduction of an Intermediate of Azithromycin
Presents the oxidation of a piece of steel studied at 1000°C
Presents the oxidation of a piece of steel when temperature is cycled between 500°C and 1100°C
Presents the measures of expansion of graphite
Presents the heat capacity of steel in the solid and liquid phases
Presents the reaction of synthesis of hydrogen peroxide on an amine in water emulsion with DRC
Presents the melting and cristallisation of mandelic acid with DRC in the scanning mode
Presents the TG analysis on a large sample (13 g) of sample
The densification which occurs during the sintering process allows to obtain chemically, thermally and mechanically stable materials. However, the properties of the materials can be still improved by maintaining a constant and not too fast rate of shrinkage during the sintering (see application sheet AN350).
With a specific software package it is possible to simulate a sintering process at a constant rate of shrinkage, the temperature scanning rate being controlled simultaneously.
During a test with controlled sintering rate, the heating rate is no more constant but decreases if the sintering rate becomes higher than the preset value. The enlargement of the previous temperature curve shows the temperature profile required to obtain a sintering process at a rate which never exceeds the preset value.
Printed circuit (PC) boards are composed of several conducting layers intercalated with epoxy resin prepreg layers. These different layers are pressed together and then heated until reticulation. After reticulation, the thermal expansion coefficient of the PC board is lowered, which prevents metallic wires soldered on it from being broken. In flexure mode, the sample is supported by two parallel edges ; a load is applied on an edge-ended probe which comes to rest in the middle of the sample.
Presents the sintering of steel powder when heated under vacuum
Butters and margarines are mainly composed of droplets of water (about a concentration of 16%) in a fatty matrix. The proportions of these components induce the thermal characteristics of the final product. In the industry, determination of their thermal profiles is essential to control their properties in term of “easy-to-spread” and good thermal stability, especially at room temperature. The DSC technique is the ideal tool for such investigations
Presents the reaction of nitration of chlorobenzene with DRC
Presents the reaction of synthesis of epichlorhydrin with DRC
Glass transition, softening, crystallization, melting are events which cause a change in the characteristic properties of a compound like its heat capacity or its thermal expansion coefficient. These changes can be observed by both DSC and TMA measurements.
The Setsys 92, equipped with a furnace composed of a metal heating coil surrounding an inner silica tube, allows experiments to be carried out up to 1200°C. Thus, glasses can be characterized by different parameters such as : the glass transition temperature, the softening point, the true and average coefficients of thermal expansion ?.
With the SetsysTMA, it is possible to study the thermomechanical behavior of powder samples. The powder is contained in a crucible, the height and external diameter of which are respectively 20 mm and 10 mm. A flat-ended probe, with a diameter end of 7 mm, is brought into contact with the sample within the crucible.
For numerous industrial applications, metallic alloys need to have a high resistance to oxidation and corrosion and good mechanical properties, especially between 700 and 1000°C. Among them, Nickel-based superalloys are often used with additive elements such as Chromium to resist oxidation and Molybdenum, Titanium and Niobium to reinforce the initial metallic matrix.