Inorganic Chemicals Cobalt Oxide 72%

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FULLN CHEMICAL ceramic glaze color Cobalt Blue FU-5604 (Cobalt aluminum blue) is composed of zinc oxide, cobalt oxide, alumina and other raw materials by mixing, calcination and micro powder processing. It is a kind of inorganic ceramic pigment blue. In the process of high temperature calcination, zinc oxide, cobalt oxide, alumina form the spinel crystal structure according to different proportions. Its composition may contain one or several groups of boric acid, halide. FULLN CHEMICAL ceramic glaze color Cobalt Blue is suitable in oxidizing atmosphere firing and suitable for various of glazes.

CODE NO.	COLOR NAME	COLOR	COMPONENTS	Firing Temperature	CAS CODE
CERAMIC GLAZE COLORS
FU-5604	Cobalt Blue		Zn-Co-Al	1050-1300℃	68186-87-8

 

With completed production process and advanced testing equipment, strict quality control system and strong talent team we can ensure that our ceramic glaze pigments have full ranges of colors and stable quality. These series of ceramic glaze color Cobalt Blue materials are with fineness of less than 400 mesh, moisture is less than 0.5%. It can be used in the field of ceramic floor tiles, ceramic wall tiles, art porcelains, sanitary wares, etc.

 

Cobalt blue pigment is renowned for its intense, vivid blue hue, characterized by high tinting strength and excellent color purity. It is widely favored in the industry for its ability to produce rich, opaque shades of blue that are highly desirable in various applications including paints, ceramics, plastics, and so on.

 

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What make the pigment blue?

Cobalt blue is traditionally used as the primary crystal phase for CoO Al2O3 spinel.For this type of color containing Zn0 is designated sea blue.Co-A1-Si is CoO·Al2O3 spinel obtained by combining cobalt oxide with kaolinite and paraffin.The Co-Zn-Si coloration is obtained by adding ZnO and SiO2 to cobalt oxide and then fire.

In the formed silicon-zinc ore (Zn2SiO4) structure, the replacement form of Co2+→Zn2+ makes Co2+ solid solution in Zn2SiO4.The silica-zinc structure was maintained (about half of the Zn2+ was replaced by Co2+).Then form a reddish and purplish blue color compared with CoO·Al2O3 spinel.

The Co-Si color is the Co2SiO4 olivine formed after sintering by adding SiO2 to cobalt oxide.Cobalt remains in the Co2+ state in all of the above colors.To get the violet blue,it can also add a small amount of cobalt oxide to the glaze.In common commercial cobalt oxide, beside CoO, it is mixed with Co3O4[CoO·Co2O3]. Co3+  affects the blue color.After adding 1%~2%(mass percentage) of cobalt oxide to the glaze, it is impossible to disperse cobalt oxide evenly in the glaze.This is the same thing as adding Cr2O3.Therefore, only after the cobalt oxide is diluted in the glaze with SiO2 and Al2O3 as the main components, and then add it into the glaze, can Co2+ be evenly dispersed in the glaze in a bivalent state.This color  is called cyanosis.

The composition of Co-Si system color is Co2SiO4.Co2+ occupies all octahedral voidage, and its coordination number is 6, and its color is purplish red.Because it is bluish blue in the glaze, it is belong to the blue color.Zr-Si-V (zircon - zirconium blue) is the mainstream of blue. It is greenish compared to cobalt blue.

 

 

Reasonable Rate and Efficient Service' for Inorganic Chemicals Cobalt Oxide 72%. We have strong technical research and development force, and our research level has been in line with international standards. Our company establishes the management system in strict accordance with the requirements of international standards and makes detailed after-sales service commitment.

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