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dehumidification system, so as to fill gaps in the literature. The theory of field synergy, a new theory, is widely used in the field of single-phase heat transfer and studied by many scholars. ZENG et al [14...) Volume-of-fluid model The volume-of-fluid model is used to track the phase interface by solving the volume ratio equation for a single phase or multiple phases. For q phase, the equation is:  ......
Trans. Nonferrous Met. Soc. China 30(2020) 2669-2680 Effect of Al-foil addition on microstructure and temperature field of laser fusion welded joints of DP590 dual-phase steel and AZ31B magnesium... was carried out for DP590 dual-phase steel and AZ31B magnesium alloy in an overlap steel-on-magnesium configuration. Temperature field was simulated by COMSOL finite element software for steel/magnesium......
Instrument Co., Ltd., Boston, MA, America) at radio frequency (RF) power of 1.35 kW, air flow rate of 12 mL/min, and argon auxiliary flow rate of 0.45 L/min. The phase compositions of TBBF slag and roasted... of SO2 and/or SO3 was dominant and the low pressure had little effect on the phase transformation of mineral during pressurized pyrolysis process. However, the pressure also led to a larger surface......
be controlled at a low level. Only in this way can the excellent performance of the magnesium alloy be ensured [4-9]. Besides, according to the Mg-Fe phase diagram, the solid solubility of Fe element... commercial magnesium alloys, primarily due to the two purposes of alloying and purification [16-19]. When Mn is added into the Al-containing Mg alloy, the Al8(Mn,Fe)5 intermetallic phase [13] can......
periodic table, and follow similar rules in the phase transition during the high-temperature calcination process between the MgO-V2O5 and the CaO-V2O5 systems. The reactions between CaO, MgO, and V2O5..., the formation of vanadate depends on the diffusion of ions in the solid phase. The radius of the magnesium ion is smaller than that of the calcium ion, resulting in a faster diffusion rate; therefore......
by heat treatment through forming high-density nano-sized precipitates like 6000 series Al-Mg-Si alloy (mainly β'' phase or pre-β'' phase) [16]. A typical heat treatment procedure applied to the alloy... with previous reports that Er addition can modify the morphology of eutectic Si phase [11,13]. In addition, small dispersoids marked by green arrows in α(Al) can be seen in Figs. 1(b) and (e). EDS......
SEM-430 (with EDS analysis) field emission scanning electron microscope (SEM). The phase structures of the powders and the coatings were analyzed by D8 advance X-ray diffractometer (Bruker, Germany... on performance of TiB2-SiC coating The phase structure and the EDS result of the TiB2-SiC coatings are shown in Fig. 4. From the XRD analysis of Fig. 4(a), the main phase of TiB2-SiC coating is TiB2......
microscope (CLSM, OLYMPUS LEXT OLS4100). Phase analysis was characterized by X-ray diffraction (XRD, Rigaku TTRIII, Japan). Thermal gravimetric analysis (TGA) was carried out using a thermal analyzer (SDT... in Figures 9(c)-(d), the dark grey region in Figure 9(b) was detected as carbides phase, while the grey region was corresponding to the matrix phase. From Figure 9(b), fine and uniform carbide phases were......
of the nonlinear Stefan type diffusion problem [32,33] with the moving free boundary of phase transition. The flow can be described by the Navier-Stokes equation [26,28]: (1) where ω is the fluid flow... to use a parabolic coordinate system (α, β, φ) to solve temperature and solute fields in the liquid phase, instead of the Cartesion coordinate system (x, y, z). The coordinate transition is adopted: x......
Results and discussion 3.1 Direct reduction in microwave field 3.1.1 Phase transitions during reduction The XRD results of Sample 4 held for various time at 1073 K in microwave field are depicted in Fig. 3. The phases of graphite, metallic Fe and Na0.75Fe0.75Ti0.25O2 could be observed at this temperature, and Na2TiO3 phase emerged at 0 min (Fig. 3(a)). The peak intensities of C......