Cobalt aluminium oxide

The German author Rose (1916) writes of tonerdeblau ( alinnina blue ) as being a synonym for cobalt blue - cobalt aluminium oxide qq.v.). The term, usually qualified as in cobalt tin alumina, blue , appears to be still in limited current use in the ceramics industry. 

Cobalt aluminium oxide Cobalt blue Rose (1916) 288... 

Also included here are the secondary oxides (aluminates) calcium aluminate (CaAl204), cobalt aluminate (C0AI2O4), lead aluminate (PbAl204) and hercynite (iron aluminate, Fe Al204). Calcium aluminate (calciiun aluminium oxide) may be a component of the pigment known as Satin white. Cobalt aluminate (cobalt aluminium oxide) is the pigment Cobalt blue. Lead alu-minate is listed by the Colour Index (1971) under Cl 77585. Hercynite has been identified on Minoan painted pottery by Stos-Fertner et al. (1979). Chromium aluminium cobalt oxide is Turkish Green. 

Aluminium group Aluminium hydroxide, bayerite type Aluminium hydroxide, nordstrandite type Aluminium oxide, amorphous type Aluminium oxide, corundum type Bayerite Boehmite Calcium aluminium oxide Chromium aluminium cobalt oxide Cobalt aluminium oxide Corundum Diaspore Gibbsite Hercynite Lead aluminium oxide Nordstrandite Ochre Cobalt blue Emery Satin white Spinel pigments Turkish green... 

Pamer has identified chromium cobalt aluminium oxide in samples of modem acrylics labelled cemlean blue , but this appears to be otherwise rare (Pamer, 1978). Mayer (1991) also mentions a cemlean blue cobalt . Other associated terms include Cdlinblau (for example, Linke and Adam, 1913). 

Cobalt aluminium oxide does occur naturally as the rare blue gemstone, cobalt spinel. It is commonly referred to historically as cobalt blue q.v.), with various other common terms related to those who discovered and developed it in the late eighteenth and early nineteenth centuries. Interestingly, however, the compound appears to have been also known in Dynastic Egypt. 

Cobalt group Cobalt aluminium oxide Cobalt arsenate Cobalt borate Smalt Binder s cobalt blue Cerulean blue King s blue Konigsblau Leithner s blue, Leyden blue New blue Thmard s blue Wenzel s blue Bacci Picollo (1996) Binder (1857) Bomford et al. (1990) 56 Colour Index (1971) ll iAb Helmi Attia (1992) Noll Hangst (1975a) Riederer(1974) Rose(1916)285 Terty(1893)27-28 Thenard (1803 )... 

Oxides with group 13-15 elements (B, Al, Sn, As) cobalt aluminium oxide cobalt boron oxide (cobalt borate) cobalt tin oxide (cobalt stannate) cobalt arsenic oxide (cobalt arsenate) eobalt arsenic oxide hydrate and erythrite (Co3(As04)2.8H20) cobalt ammonium arsenic oxide smaltite ((Co,Ni)As3 n). Phosphates cobalt phosphate (Co3(P04)2) cobalt phosphate tetrahydrate Co3(P04)3.4H20 cobalt phosphate octahydrate Co3(P04)2.8H20 cobalt aluminium phosphate cobalt ammonium phosphate (C0NH4PO4.H2O) cobalt magnesium phosphate cobalt zinc phosphate. 

Cobalt group Chromium aluminium cobalt oxide Cobalt aluminium oxide Cobalt arsenate Cobalt arsenic oxide hydrate Cobalt chromate Cobalt hexacyanoferrate(II) Cobalt iron oxide Cobalt magnesium oxide Cobalt tin oxide Cobalt tungstate Cobalt zinc oxide Cobalt(III) oxide Erythrite Cobalt black Cobalt blue Cobalt violet... 

This pigment is described by Riffault et al. (1874) as a combination of aluminium oxide and cobalt oxide. It is prepared by faking an alum solution and dissolving in it cobalt nitrate, sulfate or chloride. A pink-white precipitate is formed with sodium or potassium carbonate the product is then washed, dried and calcined in a crucible at high temperature. It would consequently appear to be a manufacturing variant of cobalt aluminium oxide (that is, cobalt blue ) and is also stated to be synonymous with Gahn s ultramarine qq.v.). 

Cobalt zinc oxide forms a green pigment similar to cobalt blue (typically cobalt aluminium oxide, qq.v.) except that zinc oxide... 

Cobalt aluminium oxide Cobalt blue Cobalt green Church (1901) 196-197 Field (1835) Salter (1869) 285... 

The earhest modem history of cobalt aluminium oxide ( cobalt blue qq.v.) pigments commences with Leithner in Vienna, who appears to have discovered the basic process of calcining cobalt oxide and alumina (aluminium oxide) in 1775. Brachert (2001) gives Leithner s blue as a synonym for Cobalt blue. It is also sometimes given as Leidner blue this may additionally explain, by corruption, the use of Leyden blue for cobalt blue. 

Cobalt aluminium oxide Cobalt blue, Thhiard s blue Brachert (2001) 155... 

Salter (1869) states that this is an artificial ultramarine (q.v.) holding a middle position between French blue and permanent blue , adding that it may be said to hover in tint between a rich ultramarine and cobalt [blue] . It was stiU a current term for synthetic ultramarine when Heaton was compiling a hst of pigment synonyms in 1928, though Mayer (1991) on the other hand states that the name originally apphed to a variety of cobalt blue which contains chromium, a shade now termed cerulean blue chromium (perhaps chromimn cobalt aluminium oxide, qq.vl). Finally, it was also apparently synonymous with Prussian blue (q.v). 

Cobalt group Cobalt aluminium oxide Cobalt blue Heaton (1928) 384 Thenard (1803 )... 

Cobalt Oxides with group 13-15 Cobalt aluminium oxide ( cobalt... 

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