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should be chosen as 75 °C. The extraction process involves a solid-liquid heterogeneous system, in which the reaction rate is controlled by mass transferring and diffusion. Therefore, extending reaction... extending time, the leaching rate is only a little increased, e.g. only about 98% after 9 h. On the contrary, the decomposition rate of oxalate groups increases almost linearly with the time increasing......
and restrained the agglomeration to a certain degree. The increase in the specific surface at the same time enhanced the reaction extent. With the run time extending, the particle size of dust reduced... brought out of the fluidized bed, thus proved the anti-agglomeration function of the combined fluidized bed. With the run time extending, the components of Ca and Mg in the dust increased. Table 3......
structure forms a more effective physical shield, extending the path of the corrosive medium to body. 4 Conclusions 1) The corrosion rate of pure Gd greatly decreased due to preparation of Al coating... a much lower dissolution rate and forms a more effective physical shield, extending the path of the corrosive medium to body. The corrosion products of pure Gd reacting with water cause the formation......
=[100]) (f) (P is Ti3AlC; M is matrix) More and coarser precipitates are found after extending aging time to 75 h. The needle-like precipitates grow up to longer than 400 nm, as shown in Fig. 8... up with prolonging aging time at the boundaries and near the dislocation areas at temperature of 800 °C. More and coarser precipitates are found with extending treating time. References [1] KIM Y W......
, the particle size decreased fast in the first hour and then changed to the minimum value within 2 h. However, a slight increase was observed with extending milling time. Samples with different milling time under... evidently moved to lower temperatures with extending milling time to 4 h and then changed little. The temperatures of endothermic peaks for 2 h milled sample were 1106, 1185, 1280, 1321 °C......
] octahedron forms a characteristic row extending along the c-axis by sharing faces, and a characteristic row extending along the b-axis by sharing corners. The radii of 6 coordination Mg2+, Ti3+ and Ti4......
of the ground temperatures (Table 2). Some stable or quasi-stable permafrost areas have been extending into the unstable or the extremely unstable permafrost areas. The numerical simulation results show... scale. Figure 6(a) shows the extending trend of the headwall of the thaw slumping at K3035 (eight group monitoring points are laid along the seriously slumping area fringe). This indicates......
% increase in grain diameter, from 57 to 73.7 μm, after 24 h. However, extending solution treatment to 48 h indicated less than 10% growth in grain diameter, from 73.7 to 80.6 μm, in comparison to 24 h... according to Eq. (1) [24]. The Pi of the alloy decreases as the time span for the solution treatment increases. Extending the solution treatment time span increases the φcorr of Mg-6Zn alloy......
observer as required, was employed. The value of CIE-L* denotes the degree of lightness and darkness of the color in relation to the scale extending from white (L*=100) to black (L*=0). The value of CIE-a* denotes the scale extending from the green (-a*) to red (+a*) axes. The value of CIE-b* denotes the scale extending from the blue (-b*) to yellow (+b*) axes. For each colorimetric parameter......
water evaporates drastically, the density decreases gradually and temperature accelerates cracks extending. Surely, the axial pressure inhibits the cracks extending. But, as the temperature continues... pressure on cracks extending shows more evidently. At that stage, compared with the rock under temperature below 100 °C, the new-born cracks are less and more cracks close under the effect of axial......
