title: Structure relaxation and crystallization of the CoW-CoNiW-NiW electrodeposited alloys.
abstract: The structure of electrolytically deposited nanocrystalline alloys of the CoW-CoNiW-NiW systems under low-temperature heating was investigated by means of high-resolution transmission electron microscopy (HRTEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF STEM), and analytical methods such as energy dispersive x-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS). Structural relaxation and crystallization were investigated at temperatures of 200°C to 300°C. The structural and compositional inhomogeneities were found in the CoW-CoNiW-NiW alloys, while the local changes in composition were found to reach 18 at.%. Nanocrystals in the alloys grew most intensely in the presence of a free surface, and we found their nuclei density to range from 2 × 1023 /m3 to 3 × 1023 /m3. It was determined that the local diffusion coefficient ranged from 0.9 to 1.7 10-18 m2/s, which could be explained by the prevalence of surface diffusion. The data gathered in these investigations can be used to predict the thermal stability of CoW-CoNiW-NiW alloys.
authors: Far Eastern Federal University, Shukhanova 8, Vladivostok 690950, Russia. pustovalov.ev@dvfu.ru.
authors: Evgeny V
authors: EV
authors: Pustovalov
authors: Evgeny B
authors: EB
authors: Modin
authors: Oleg V
authors: OV
authors: Voitenko
authors: Aleksander N
authors: AN
authors: Fedorets
authors: Aleksander V
authors: AV
authors: Dubinets
authors: Boris N
authors: BN
authors: Grudin
authors: Vladimir S
authors: VS
authors: Plotnikov
authors: Sergey S
authors: SS
authors: Grabchikov