For the α -Al 2O 3 powder with agglomeration strength of 76MPa,activation energy of sintering was determined to be 328kJ/mol, while for the powder with agglomeration strength of 234MPa, the activation energy was 445kJ/mol.
The LiVO_(3) phase is formed, preventing the viscosity from increasing abnormally and the agglomeration of powder due to the reaction between V_2O_5 and TiO_2. The slurry characteristic is improved. The sintering and dielectric properties are more excellent than those obtained by other ways of doping with V_(2)O_(5).
Steam produced during the decomposition process accelerated the sintering of MgO, and MgO with surface area as high as 412 m2 · g-1 was obtained through calcining its precursor in flowing dry nitrogen at 520°C for 4 h.
The fabrication procedure involved a double-sintering process in a rich-Mg environment.
Samples with the equally high density and matching superconducting properties were obtained as well by a triple sintering process of the MgB2 powder directly from Alfa Aesar.
The specific surface areas are different before sintering, and have a slight difference after sintering.
Besides, the impurity phase, tetracalcium phosphate, appeared during ultrasonic atomizing procedure, and can be completely removed after sintering at 650°C for 1 h.
Polycrystal Li2B4O7 (LBO) doped with Cu and In was prepared and then sintered at different temperatures.
Mean decay constant of OSL is related to the sintered temperature.
However, for the majority of systems of practical importance - the ensemble of pores when powders are sintered or an ensemble of gas bubbles in a liquid - even the actual possibility of their steady evolution is far from obvious.
A decrease in the thickness of the porous layer sintered on the plate surface is accompanied by an increase in the radii of curvature of the interfaces of this layer.
Green compacts were shaped by cold isostatic pressing under a pressure of 300 MPa, and then they were sintered under no pressure for 2 h at 1500-1650°C in air.
In contrast to the conventional selective laser sintering, the SSLS method makes it possible to sinter polymer microparticles and melt the near-surface layer rather than the microparticle as a whole.
The nanoparticles are highly reactive and sinter at low temperatures (T >amp;lt; 0.35Tm).
Effect of the catalyzing combustion of coke breeze on the energy saving in sinter process
The mechanism of additive ZC-1 for catalyzing combustion of coke breeze in sintering of iron ore fines was studied by using X-ray Diffraction, TGA and GC(Gas Chromatographer), by which energy saving was achieved on sinter pot test.
Burnt lime and serpentine were incorporated into the sinter mix to improve high iron and low silica sintering.
The mechanism of the frothing process in restraining agglomeration is discussed.
The results indicated that the adsorption of PEI on the surface of HSNP would increase the repulsive energy among particles, hence reducing the agglomeration of HSNP and improving the stability of the aqueous suspensions.
Modeling of the City Transport Flows as Applied to the Moscow Agglomeration
A mathematical model of the transport system of a city or an urban agglomeration intended for forecasting the transport and passenger flows was described.
The model was calibrated in practice for the transport network of the Moscow agglomeration which includes the city of Moscow and its suburbs where the major part of the population of the Moscow province is concentrated.