Calcium zirconate

One of the processes for extracting zirconium from the mineral zircon (ZrSi04) is to fuse the mineral with limestone or dolomite. The reaction product disintegrates on cooling into powdered calcium silicate and coarse crystals of calcium zirconate (equation 12.7). The zirconate is dissolved in acid and converted into zirconium salts or zirconium oxide, much of which are converted into the corrosion-resistant zirconium metal [12.38]. [Pg.112]

Allsopp, G. Vianello, Poly(vinyl chloride) , Ullmann s. [Pg.113]

The Chemical Abstracts Service (CAS) registry numbers for CaO and MgO are 1305-78-8 and 1309-48-4. The corresponding reference numbers in the European Inventory of Existing Commercial Substances (EINECS) are 215-138-9 and 215-171-9. [Pg.117]

Humidity Effects on Calcium Zirconate Ceramics in Electrochemical Hydrogen Cells, Ionics 1, 384-386 (1995). [Pg.107]

N. Kurita, N. Fukatsu, K. Ito, and T. Ohashi, Protonic Conduction Domain of Indium-Doped Calcium Zirconate,/. Electrochem. Soc. 142(5), 1552-1559 (1995). [Pg.107]

As with oxygen ion-conducting electrolytes, proton conduction in these electrolytes occurs only within a limited range of hydrogen partial pressures. In addition, as they are oxides, oxygen defects can occur. Figure 13.6 shows the predominant defects in indium-doped calcium zirconate, which were calculated based on an extrapolation of conductivity measurements [79]. Hydrogen conduction occurs by interstitials H ... [Pg.439]

Kurita, N., Fukatsu, N., Ito, K. and Ohashi, T. (1995) Protonic conduction domain of indium-doped calcium zirconate. [Pg.471]

Rog, G., Dudek, M., Kozlowska-R6g, A. and Bucko, M. (2002) Calcium zirconate, properties and application to the solid oxide galvanic cells. Electrochim. Acta, 47, 4523-9. [Pg.490]

Earlier work by Hulbert, Morrison and Klawitter (1972) confirmed that calcium zirconate ceramics implanted intramuscularly in rabbits promoted the formation of a 100-200 pm thick pseudo membrane that within 6-9 months gradually den-sified without the presence of inflammatory cells thus suggesting a high degree of biotolerance. Recent work by Liu et al. (2006) showed that nanostructured Zr02 films formed by cathodic arc deposition on silicon surfaces promote the formation of apatite when incubated in SBF. On the apatite, growth and proliferation of... [Pg.408]

Kriven W.M., Rosczyk B.R., Kremeyer, Song B., Chen W. Transformation toughening of a calcium zirconate matrix by dicalcium silicate under ballistic impact. Ceramic engineering and science proceedings, 2003, v.24, N.3, p.383-388. [Pg.393]

Zirconium butylate. See Zirconium butoxide Zirconium calcium oxide. See Calcium zirconate... [Pg.4772]

Magnesium molybdate 12013-47-7 Calcium zirconate 12013-56-8 Calcium silicon... [Pg.6422]

Magnesium molybdate 234-586-6 Calcium zirconate 234-588-7 Calcium silicon 234-618-9... [Pg.6913]

Lime fusion is based on the reaction of zircon with calda, or doloma, which yields calcium zirconium silicate, calcium zirconate, calcium silicate, zirconium oxide, calcium magnesium silicate and the mixtures thereof, according to the reaction conditions ... [Pg.30]

Calcium Zirconate. CaZr03 a material having useful dielectric and refractory properties. As a dielectric it is normally used in minor amounts (3-10%) in titanate bodies as a refractory it can be used, even under reducing conditions, up to 1700 C provided that it is not in contact with siliceous material. M.p. approx. 2350 C, sp. gr. 4.74 thermal expansion 8-11 x 10- (25-1300 C). Calcrete. Gravel and sand cemented with calcium carbonate. [Pg.48]

Sintering some ores with lime etc., and extracting with dilute HCl leaves calcium zirconate, which is treated with concentrated H2SO4 to form soluble Zr(S04)2. [Pg.99]

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