In order to get the stable discharging state,addition of flux to high ash fusion temperature Chinese coals are considered the principal challenges to the economic use of coals in slagging *** were carried out into the...
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In order to get the stable discharging state,addition of flux to high ash fusion temperature Chinese coals are considered the principal challenges to the economic use of coals in slagging *** were carried out into the influences of magnesium oxide on melting behavior of different coal ashes with different ash fusion temperature under reducing *** the increase of MgO addition,the melting temperature of ash initially decreases sharply,then gradually reaching its minimum value at the amount of MgO around 15%in ash. However increasing again with the further addition of *** and SEM were used to examine the mineral transformation of coal ashes at high ***'s shown that MgO can reduce the fusion temperature *** it's increased the proportion of alkalescent oxides,and the other is that in high temperature mullite reacted with periclase to form cordierite,forsterite and sapphirine,they are produce a low-melting eutectic mixture which decreases the ash fusion temperate.
Following the successful synthesis of one-dimensional tungsten oxide nanowires,we here investigated their structure and unique intrinsic defects with the assist of xRD,HRTEM and *** showed that single tungsten oxide n...
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Following the successful synthesis of one-dimensional tungsten oxide nanowires,we here investigated their structure and unique intrinsic defects with the assist of xRD,HRTEM and *** showed that single tungsten oxide nanowire exhibits obvious crystal defects, including stacking faults,dislocations and *** on these crystal defects can help understanding the temperature-dependent morphological evolution of the ultrathin nanowires under thermal processing.
Over the past few years,the concept of strain has been of interest at different scales for GaN *** is due to the fact that the presence of strain will not only change the lattice constant and the crystallographic symm...
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Over the past few years,the concept of strain has been of interest at different scales for GaN *** is due to the fact that the presence of strain will not only change the lattice constant and the crystallographic symmetry,but also the physical properties of the *** this paper,thick GaN films on c-sapphire(α-Al2O3) substrates with a self-buffer have been deposited by low pressure metal-organic chemical vapor deposition(LPMOCVD).The lattice constant in the hexagonal structure GaN films is measured using a high resolution x-ray diffraction technique at room *** obtain accurate results,emphasis has been placed on the importance of a carefully corrected Bragg angle of the GaN film.A strategy for eliminating related error will be *** results show that the lattice constants a and c of the GaN films are almost the same as that of the bulk *** space map(RSM) observation provided useful insights into the strain state in GaN *** residual stress in the GaN films is believed to be fully *** purpose of this paper is to measure the lattice constant of epitaxial GaN *** is important to realize that controlling GaN strain(or stress) is necessary to obtain desirable physical properties.
N-doped ZnO/Ag nanocomposites were successfully prepared by using a plasma-assisted reactive evaporation(PARE) *** lattice parameters of the prepared nanocomposite were refined,their energy band and density of states ...
N-doped ZnO/Ag nanocomposites were successfully prepared by using a plasma-assisted reactive evaporation(PARE) *** lattice parameters of the prepared nanocomposite were refined,their energy band and density of states were also calculated with density functional theory (DFT) and studied the property of photochemical *** to the doping of N,the lattice parameters of original ZnO/Ag nanocomposites were altered which is most significant in the crystal face of(001).The band gap of the doped nanocomposites was about 1.19～0.47eV lower than that of pure ZnO,indicating the increased the activity of photochemical catalysis after doping.
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