Sintering study of silver particles by in situ electron microscopy

Initial stage sintering of binderless tungsten carbide powder under microwave radiation

“…It could however lead to further neck growth for bigger soaking times, which was previously reported for conventional sintering of metals and ceramics [23]. However, the overall rate of neck growth examined during microwave sintering can be compared with ultra-high heating rate [24], and further growth may be expected for soaking times that are typical for conventional processing but rarely used in microwave sintering [25].…”

Printed electronics: the challenges involved in printing devices, interconnects, and contacts based on inorganic materials

“…Grain boundary diffusion allows for neck formation and neck radii increase, which is diminished by the energy required for grain boundary creation. 46,47 The process of Ostwald ripening stalls when a particle diameter of approximately one and a half times their original size is reached, leaving behind a porous structure, and lower conductivity values than the bulk material are obtained. The transport of material between particles during Ostwald ripening is non-convective and purely of a diffusive nature.…”

In situ transmission electron microscopy and scanning transmission electron microscopy studies of sintering of Ag and Pt nanoparticles

“…Previous in situ TEM experiments [12][13][14][15][16][17][18][19][20][21][22][23][24] used a miniature furnace with a heating coil to indirectly heat the sample, while temperature was measured with an attached thermocouple. Indirect heating results in substantial thermal drift, making it difficult to perform these experiments at high magnifications.…”