Microstructural characterizations of Ni activated sintered W–2wt% TiC composites produced via mechanical alloying

Microstructure and properties of W/Sm2O3 composites prepared spark plasma sintering

“…The theoretical density of the W-3 wt%Sm 2 composite was calculated from the fraction and theoretical density of each component. Microstructure and composition of the sintered sample were characterized via field-emission scanning electron microscopy (FE-SEM, SU8020, Japan) and energy dispersive X-ray spectrometry (EDS).…”

“…Tungsten (W) and its alloys are considered as one of the most promising candidates for plasma facing materials in fusion reactors due to their good thermal conductivity, low thermal expansion coefficient, good thermal shock resistances, high strength at elevated temperatures, low sputtering yield, high sputtering resistance and low tritium inventory [1][2][3][4]. However, W matrix materials exhibit the problem of low-temperature brittleness, recrystallization brittleness, and radiation reduced brittleness [5][6][7].…”

Fabrication of CuW pseudo alloy by W–CuO nanopowders

“…Subsequently, mechanical properties as well as electrical properties of the contact materials largely depend on both the continuity of skeleton and the distribution of copper [1,[5][6][7]. Generally, some tiny addition of alloying elements, such as Ni,Co,Cr, into W matrix can improve the strength of W skeleton since they can form a special thin film on the surface of W grains and promote the diffusion of W and activated sintering [8][9][10][11][12]. Nevertheless, it is noted that the addition of Ni may form Ni 4 W and reduce the electrical and thermal conductivity [11,13].…”

Microstructure and properties of W–ZrC composites prepared by the displacive compensation of porosity (DCP) method

“…Tungsten, due to its high melting point, high strength, high thermal conductivity, and low thermal expansion coefficient, is attractive for aerospace applications, such as rocket nozzles and re-entry components [1][2][3][4]. Zirconium carbide, for its extremely high melting temperature (3540 • C), relatively low density ( [ZrC] = 6.63 g/cm 3 , one third of [W]), good ablation resistance [4][5][6], and being consistent with tungsten [7,8], has been introduced into the refractory metal [4,6,7].…”

“…Zirconium carbide, for its extremely high melting temperature (3540 • C), relatively low density ( [ZrC] = 6.63 g/cm 3 , one third of [W]), good ablation resistance [4][5][6], and being consistent with tungsten [7,8], has been introduced into the refractory metal [4,6,7]. Furthermore, composites of these two materials can improve the flexural strength of tungsten and the fracture toughness of zirconium carbide at elevated temperature [9,10].…”