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?). Thermogravimetric analysis(TGA) and differential thermal analysis(DTA) were performed in a TAS100 analyzer. Morphology of the powders was observed with a JSM-5600LV scanning electron microscope. The specific......
and crystallization of anisotropic shaped ZrO2 nanocrystalline powders by hydrothermal process[J]. Materials Letters, 2003, 57: 2425-2431. [8] ZHAO N N, PAN D C, NIE W, JI X L. Two-Phase Synthesis......
by spheroidizing and sieving process, the physical parameters of natural graphite powders and their initial irreversible capacity are listed in Table 1. From Table 1, it is apparent that the NFG exhibits large......
. Extrusion of metal powders [J]. International Materials Reviews, 1991, 36(2): 621-631. [42] 杨伏良, 甘卫平, 陈招科. 快速凝固/粉末冶金制备高硅铝合金材料的组织与力学性能[J], 中国有色金属学报, 2004, 14(10): 1716-1722.YANG Fu-liang, GAN Wei-ping......
steps. The air-dried samples were oven-dried at 40 °C for 24 h, then crushed and sieved with 200-mesh screen. After that, the powders were placed in a clean porcelain crucible and heated in a muffle......
and ceramic powders sintering, thin films, high temperature oxidation, to large-scale integration [9-14]. Fig. 1 Atomic diffusion mechanisms Only three papers were produced by KIRKENDALL in his......
在粉末颗粒之间会形成局部微火花,导致局域熔融,从而加速了粉末压坯的整体致密化. 图8 WC粉末在1200 ℃微波烧结不同时间出现的烧结颈的SEM像[22] Fig. 8 SEM images showing neck growth during microwave sintering of WC powders at 1200 ℃ for different times......
specimens. Transmission electron microscope (TEM, Hitachi) was used to determine the size and morphology of the fine powders. 2.4 Electrochemical tests Rectangular specimens with surface area of 1......
and alumina powders to effectively protect melts from flowing out and oxidation during melting and solidification. A schematic illustration of the isothermal solidification quenching process is shown......
, resulting in a complete MnO2/MnOOH homogeneous redox process. Furthermore, the discharge capacity of MnO2 can be greatly improved by doping nano-PbO2 powders to modify MnO2 electrodes [11]. Metal-based......
