Pigments in ceramics

Tungsten oxide (WO ) is used to make tungsten alloys. Tungsten oxide is also used as fireproofing for various surfaces and is used as a yellow pigment in ceramics. 

The use of cadmium pigments in ceramics is controlled in the EC Guideline No. 84/500/EC. International standards [Part 1 (Methods) and Part II (Limit Values)] are as follows ceramic surfaces ISO 6486, enamel ISO 4531, and glass ISO 7086. 

Cd and its compounds find applications in several industrial materials electrode materials in Ni-Cd batteries (about 70% of total produced Cd), pigments in ceramics, glasses, paper, plastics, artists colors (13%), stabilizers for polyvinyl chloride and related polymers (7%), coatings on steel, aluminium, and other nonferrous metals (8%), and specialized alloys (see Alloys) and others (2%). 

Use To form metal by reduction, alloys, preparation of tungstates for X-ray screens, fireproofing fabrics, yellow pigment in ceramics. 

While the importance of cobalt-based pigments in ceramics is well established, it has also been shown that thin films of C03O4 provide an effective coating for solar collectors that operate at high temperatures. The properties of black C03O4 that make it suitable for this application are its high solar absorbance and low IR emittance. 

The topics chosen for inclusion in this chapter reflect areas of active interest and elaborate upon some topics that have been given only brief mention in earlier chapters. In describing the chemistries of the d- and /-block metals in Chapters 21,22 and 24, we included many examples of solid state compounds, and we now look further at electrical conducting and superconducting properties. At various points in the book, we have mentioned colour pigments in ceramic materials when... 

USE As pigment in ceramic glazes and vitreous enamels as temp indicator in textile industry in fertilizers for plant nutrition in Co analysis. 

Hazardous Decomp. Prods. Heated to decomp., emits toxic fumes of Co Uses Pigment in ceramics trace element added to soils and animal feed temperature indicator catalyst... 

Uses Prep, of nickel catalysts catalyst to dehydrogenate food oils pigment in ceramics and glazes corrosion inhibitor in plating electroplating imparts tough shiny finish in surface finishes mfg. of other nickel salts Manuf./Distrib. Ashland http //www.ashchem.com, Atofina http //www.atofinachemicals.com, Farleyway Chems. Ltd Fisher Scientific http //www.fisher1.com. Hall Chem. 

Decorative purposes are also often of low priority. Having said this, Calvacante et al. [38] showed that the usage of nanosized pigments in ceramic glazes and glassy... 

It functions as a pigment and reinforcing agent in some rnbber prodncts as a pigment and mold-growth inhibitor in paints as a pigment in ceramics, floor tile, and glass as a thickener in cosmetics as a feed additive for cattle and as a dietary snpple-ment for humans. 

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