. "tungsten bronzes, plasmachemical preparation, RF-discharge"@en . "1"^^ . "2"^^ . "Plasmachemical preparation of lead-tungstate bronze"@en . "Jan\u010Da, J." . "Eli\u00E1\u0161, M." . . "579695" . "MAXDORF,s.r.o" . "Lednice" . "RIV/61389021:_____/04:00109587" . . "Plasmachemical preparation of lead-tungstate bronze" . . "Redukc\u00ED PbWO4 v induktivn\u011B buzen\u00E9m vod\u00EDkov\u00E9m plazmatu p\u0159i 900\u00B0C byla p\u0159ipravena olovnato-wolframov\u00E1 bronz Pb0,261WO3 a metodou DE* zm\u011B\u0159eny parametry jej\u00ED barevnosti. D\u00E1le byla ov\u011B\u0159ena struktura t\u00E9to l\u00E1tky a sledov\u00E1ny zm\u011Bny obsahu kysl\u00EDku v z\u00E1vislosti na dob\u011B redukce."@cs . "Proceedings 14th Joint Seminar DMSRE" . . "Plazmochemick\u00E1 p\u0159\u00EDprava olovnato-wolframov\u00E9 bronzi"@cs . "13;14" . . . "Bro\u017Eek, Vlastimil" . "P(ME 489), Z(AV0Z2043910)" . "2004-08-31+02:00"^^ . "80-7345-032-1" . . "RIV/61389021:_____/04:00109587!RIV/2005/AV0/A52005/N" . . "Plasmachemical preparation of lead-tungstate bronze" . . "Tungsten bronzes are materials based on tungsten oxide that exhibit different colours, excellent chemical resistivity, metallic appearance and good conductivity. The doped tungsten bronzes may by used as anodic catalyst in fuel cells. The tungsten bronzes are prepared by reduction of tungstates. The reduction process is known for very long time, but the correlation between their stoichiometry, conductivity and colour are not yet completely understood. The published results about colour of products are very often misleading. In this paper, we study chemical reactions between lead-tungstate and hydrogen plasma. The reduction was performed in an inductively coupled r.f. discharge. The r.f. generator operated at the frequency of 27 MHz with the power output of 1 kW. The PbWO4 was heated by the discharge to the temperature of 900\u00B0C. The resulting samples were analysed by SEM, XRD and three point L*a*b* method. The XRD spectra of our plasmachemical product show diffraction patterns of..." . . . "Plazmochemick\u00E1 p\u0159\u00EDprava olovnato-wolframov\u00E9 bronzi"@cs . . . "[B7527307FD81]" . . "Plasmachemical preparation of lead-tungstate bronze"@en . "Tungsten bronzes are materials based on tungsten oxide that exhibit different colours, excellent chemical resistivity, metallic appearance and good conductivity. The doped tungsten bronzes may by used as anodic catalyst in fuel cells. The tungsten bronzes are prepared by reduction of tungstates. The reduction process is known for very long time, but the correlation between their stoichiometry, conductivity and colour are not yet completely understood. The published results about colour of products are very often misleading. In this paper, we study chemical reactions between lead-tungstate and hydrogen plasma. The reduction was performed in an inductively coupled r.f. discharge. The r.f. generator operated at the frequency of 27 MHz with the power output of 1 kW. The PbWO4 was heated by the discharge to the temperature of 900\u00B0C. The resulting samples were analysed by SEM, XRD and three point L*a*b* method. The XRD spectra of our plasmachemical product show diffraction patterns of..."@en . "3"^^ . . "Praha" . . .