12 research outputs found
Perovskite compounds of the SrVxTbySn1-(x+y)O3 type
CĂlem tĂ©to diplomovĂ© práce bylo pĹ™ipravit pigmenty na bázi cĂniÄŤitanu strontnatĂ©ho dopovanĂ©ho lanthanoidy (terbium) a vanadem obecnĂ©ho vzorce SrVxTbySn1-(x+y)O3, kde x = 0; 0,025; 0,05; 0,1; 0,2; 0,3; 0,4; 0,5; y = 0,1 a 0,3, s teplotou vĂ˝palu pohybujĂcĂ se od 1300 do 1500 °C, kterĂ© by mohly najĂt uplatnÄ›nĂ pĹ™i vybarvovánĂ nátÄ›rovĂ˝ch hmot a keramickĂ˝ch glazur.The aim of this thesis was to prepare pigments based on strontium stannate, which are doped by ionts of lanthanides, namely terbium, and vanadium with general formula SrVxTbySn1-(x+y)O3, where x = 0, 0.025, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5; y = 0.1 and 0.3, with calcination temperature range from 1300 to 1500 °C, which can be used for colouring of paints or ceramic glazes.Katedra anorganickĂ© technologieDiplomantka seznámila ÄŤleny zkušebnĂ komise s tĂ©matem svĂ© diplomovĂ© práce, která se tĂ˝kla syntĂ©zy perovskitovĂ˝ch pigmentĹŻ na bázi cĂniÄŤitanu strontnatĂ©ho. Po pĹ™eÄŤtenĂ posudku vedoucĂho práce a oponentskĂ©ho posudku diplomantka odpovĂdala na dotazy jednotlivĂ˝ch ÄŤlenĹŻ komise, tĂ˝kajĂcĂch se vĂ˝sledkĹŻ dosaĹľenĂ˝ch v diplomovĂ© práci
Preparation and evaluation of colour properties of the SrVxTbySn1-(x+y)O3 compounds
PĹ™edkládaná bakalářská práce se zabĂ˝vá pĹ™Ăpravou pigmentĹŻ na bázi cĂniÄŤitanu strontnatĂ©ho dopovanĂ©ho lanthanoidy (terbium) a vanadem obecnĂ©ho vzorce SrVxTbySn1-(x+y)O3, kde x = 0, 0.025, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5; y = 0.1 a 0.3, s teplotou vĂ˝palu pohybujĂcĂ se od 1300 do 1500 °C, kterĂ© by mohly najĂt uplatnÄ›nĂ pĹ™i vybarvovánĂ nátÄ›rovĂ˝ch hmot a keramickĂ˝ch glazurThe bachelor work deals with the preparation of the pigments based on stroncium stannate which are doped by ionts of lanthanides, namely terbium, and vanadium with general formula SrVxTbySn1-(x+y)O3, where x = 0, 0.025, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5; y = 0.1 and 0.3, with calcination temperature range from 1300 to 1500 °C, which can be used for colouring of paints or ceramic glazes.Katedra anorganickĂ© technologieStudentka prezentovala svoji bakalářskou práci a seznámila ÄŤleny komise se svĂ˝mi vĂ˝sledky. PotĂ© pĹ™eÄŤetl pĹ™edseda komise posudek vedoucĂho bakalářskĂ© práce. Následovala diskuze. Studentka odpovÄ›dÄ›la na všechny poloĹľenĂ© otázky
Barevné vlastnosti pigmentů YMnO3
Pigments based on YMnO3 doped by ions of Sn with general formula YMnx(MSn)1-xO3±δ, where x =0.9; 0.5; 0.1; and M = Cu or Ni were prepared by mechanical activation and their color properties, phase purity, PSD were measured. The mineralizers were used to improve properties of these compounds. The color shade is shifting from black to dark green for (CuSn) and from black to dark brown for (NiSn). The XRD analysis showed that pigment YMn0.9(CuSn)0.1O3±δ provides single-phase perovskite structure at 1100 °C. The use of mineralizers caused increase of intensity of the crystalline phase.Pigmenty typu YMnO3 dopovanĂ© ionty Sn s obecnĂ˝m vzorcem YMnx(MSn)1-xO3±δ, kde x =0.9; 0.5; 0.1; a M = Cu nebo Ni byly pĹ™ipraveny mechanickou aktivacĂ a byly změřeny jejich barevnĂ© vlastnosti, fázovĂ© sloĹľenĂ a distribuce velikosti částic. Mineralizátory byly pouĹľity pro zlepšenĂ vlastnostĂ tÄ›chto slouÄŤenin. BarevnĂ˝ odstĂn pĹ™echázĂ z ÄŤernĂ© do tmavÄ› zelenĂ© (CuSn) a z ÄŤernĂ© do tmavÄ› hnÄ›dĂ© (NiSn). DifrakÄŤnĂ analĂ˝za prokázala vznik jedinĂ© perovskitovĂ© fáze u slouÄŤeniny YMn0.9(CuSn)0.1O3±δ pĹ™i teplotÄ› 1100 °C. PouĹľitĂm mineralizátorĹŻ se zvýšila intenzita krystalickĂ© fáze
The YFeO3±δ Inorganic Pigments Doped by Sn4+
VĂ˝zkum je zaměřen na pĹ™Ăpravu a hodnocenĂ vlastnostĂ pigmentĹŻ typu YFeO3 dopovanĂ˝ch Sn4+ a jako nábojovÄ› kompenzaÄŤnĂ prvky byly pouĹľity Mg2+ a Ni2+. Vzorky byly pĹ™ipraveny mechanickou aktivacĂ a vypáleny pĹ™i teplotách 900 – 1300 °C. Pigmenty byly aplikovány do organickĂ©ho pojiva i keramickĂ© glazury. Bylo zjištÄ›no, jakĂ˝ vliv má teplota vĂ˝palu a sloĹľenĂ vzorkĹŻ na barevnĂ© vlastnosti, distribuci velikosti částic a fázovĂ© sloĹľenĂ.The research was focused on the preparation and verification of properties of YFeO3 pigments doped by Sn4+ and as charge-compensating elements were used Mg2+ and Ni2+. The samples were prepared by the mechanical activation and fired at the temperatures of 900 - 1300 °C. The pigments were applied to the organic binder and ceramic glaze. The effect of the firing temperature and composition of the samples on the color properties, particle size distribution and phase composition was found
PĹ™Ăprava a hodnocenĂ barevnĂ˝ch vlastnostĂ pigmentĹŻ YFeO3 dopovanĂ˝ch In3+ a Ga3+
Inorganic pigments of type YFex(M)1-xO(3), where M = In or Ga and x = 1 or 0.95, were synthesized by mechanical activation in liquid medium (H2O + C2H6O) and successive two-step heating in the range 900 1300 degrees C. TG-DTA analysis of a mixture of starting oxides Fe2O3 and Y2O3 was performed in order to compare the thermal behavior of reagents before and after mechanical activation. YFeO3 was prepared as a standard and applied into the ceramic glaze and acrylic copolymer matrix (mass and diluted tone). Samples were characterized by XRD analysis, particle size distribution (PSD) and color measurements. The effect of substitution of 5 mol% Fe3+ for In(3+)or Ga(3+)on the changes of pigment properties was examined.AnorganickĂ© pigmenty typu YFex(M)1-xO3, kde M = In nebo Ga a x = 1 nebo 0,95, byly syntetizovány mechanickou aktivacĂ v kapalnĂ©m mĂ©diu (H2O + C2H6O) a následnÄ› vypáleny ve dvou stupnĂch v rozmezĂ 900 - 1300 °C. TG-DTA analĂ˝za smÄ›si vĂ˝chozĂch oxidĹŻ Fe2O3 a Y2O3 byla provedena za účelem porovnánĂ tepelnĂ©ho chovánĂ reakÄŤnĂ smÄ›si pĹ™ed a po mechanickĂ© aktivaci. YFeO3 byl pĹ™ipraven jako standard a byl aplikován do keramickĂ© glazury a do organickĂ©ho pojiva – akrylátovĂ˝ kopolymer (plnĂ˝ a zĹ™edÄ›nĂ˝ tĂłn). Vzorky byly charakterizovány rentgenovou difrakÄŤnĂ analĂ˝zou, distribucĂ velikosti částic (PSD) a měřenĂm barevnosti. Byl zkoumán účinek nahrazenĂ 5% molárnĂch Fe3+ za In3+ nebo Ga3+ na zmÄ›ny pigmentovĂ˝ch vlastnostĂ