TY - JOUR
T1 - Synthesis of molybdenum borides and molybdenum silicides in molten salts and their oxidation behavior in an air-water mixture
AU - Kuznetsov, S.A.
AU - Kuznetsova, S.V.
AU - Rebrov, E.V.
AU - Mies, M.J.M.
AU - Croon, de, M.H.J.M.
AU - Schouten, J.C.
PY - 2005
Y1 - 2005
N2 - The formation of various coatings in molybdenum-boron and molybdenum-silicon systems was investigated. Boronizing and siliciding treatments were conducted in molten salts under inert gas atm. in the 850-1050 DegC temp. range for 7 h. The presence of boride (e.g. Mo2B, MoB, Mo2B5) and silicide (MoSi2, Mo5Si3) phases, formed on the surface of Mo plates, was confirmed by X-ray diffraction anal. The distribution of elements was detd. by means of wavelength dispersive spectroscopy (WDS) spectra of the surface and line-scan analyses from surface to interior. Depending on the process type (diffusional or electrochem.) and temp., the thickness of the protective layers formed on the substrate ranged from 6 to 40 mm. The oxidn. resistance of obtained phases was investigated in an air-water mixt. in the temp. range of 500-700 DegC for a period up to 400 h. An improved oxidn. behavior of coated plates in comparison with that of pure molybdenum was obsd. [on SciFinder (R)]
AB - The formation of various coatings in molybdenum-boron and molybdenum-silicon systems was investigated. Boronizing and siliciding treatments were conducted in molten salts under inert gas atm. in the 850-1050 DegC temp. range for 7 h. The presence of boride (e.g. Mo2B, MoB, Mo2B5) and silicide (MoSi2, Mo5Si3) phases, formed on the surface of Mo plates, was confirmed by X-ray diffraction anal. The distribution of elements was detd. by means of wavelength dispersive spectroscopy (WDS) spectra of the surface and line-scan analyses from surface to interior. Depending on the process type (diffusional or electrochem.) and temp., the thickness of the protective layers formed on the substrate ranged from 6 to 40 mm. The oxidn. resistance of obtained phases was investigated in an air-water mixt. in the temp. range of 500-700 DegC for a period up to 400 h. An improved oxidn. behavior of coated plates in comparison with that of pure molybdenum was obsd. [on SciFinder (R)]
U2 - 10.1016/j.surfcoat.2004.05.021
DO - 10.1016/j.surfcoat.2004.05.021
M3 - Article
SN - 0257-8972
VL - 195
SP - 182
EP - 188
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
IS - 2-3
ER -