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11 de may. de 2021 · Cobalt pigments include a diverse range of colours, from deep, opaque greens to cool, transparent violets. Read about their history and characteristics.
Cobalt blue is a blue pigment made by sintering cobalt (II) oxide with aluminium (III) oxide (alumina) at 1200 °C. Chemically, cobalt blue pigment is cobalt (II) oxide-aluminium oxide, or cobalt (II) aluminate, CoAl 2 O 4. Cobalt blue is lighter and less intense than the (iron-cyanide based) pigment Prussian blue.
Cobalt pigments such as cobalt blue (cobalt aluminate), cerulean blue (cobalt(II) stannate), various hues of cobalt green (a mixture of cobalt(II) oxide and zinc oxide), and cobalt violet (cobalt phosphate) are used as artist's pigments because of their superior chromatic stability.
15 de oct. de 2021 · Unlike the clean transparency of Ultramarine Blue, Cobalt Blue has a slightly ‘milky’ quality and it has a moderately low tinting strength. It is highly granulating in watercolour and easy to lift from the paper even after drying. You can read more about Cobalt pigments here.
23 de jun. de 2020 · An innovative and facile synthesis of cobalt based inorganic pigment was carried out by means of a low energy thermal conversion of a cobalt-exchanged zeolite. The Na-A [LTA] zeolite was used,...
- Assunta Campanile, Barbara Liguori, Ottavio Marino, Gennaro Cavaliere, Valter Luca De Bartolomeis, D...
- 2020
Overview. History of use. Making the pigment. Technical details. Painted swatch of Cobalt blue. Brief description of Cobalt blue: It's a cobalt oxide-aluminum oxide. Very costly and extraordinary stable pigment of pure blue colour discovered by Thénard in 1802. It is now the most important of the cobalt pigments.
30 de abr. de 2014 · Cobalt, is symbol Co on the periodic table with an atomic weight of 27. While in it's natural, raw state it's a somewhat burnished silver colour, it is famously known for producing vibrant blues...
