Types of enamel paints
In the field of Enamel art, there are different types of colors that it is better to combine some for beautification as well as different temperatures; For example, for red or so-called syringe, the red color is mixed with yellow. Of course, its percentages should be tested, or blue (azure) or light blue, and the like, some of which are mentioned below, should be used.
Azure blue
To make blue, cobalt oxide or cobalt phosphate or arsenic cobalt are added to one of the aluminum oxides (aluminum), lime (calcium oxide), magnesium oxide or quartz. Cobalt oxide combines with kaolin to produce a light blue color. If arsenate or phosphate replaces cobalt oxide, a dark blue color is obtained by adding oxide to the blue sky; Also, by adding nickel oxide (Nio), a bluish-gray color is obtained, and finally, by adding chromium oxide, you can achieve a bluish-green color.
Purple red “pink”
By mixing materials such as (B2O3), (CaO), (Sio2), (SnO) and very small amounts (Cr2O3), a reddish-purple color is created, and as the amount of lime increases, the color becomes more fiery, and if the amount of SiO2) Upwards, a reddish-blue color is obtained. Boric acid tends to turn purple, and potassium and sodium oxide change the pink to purple-purple. Crushed glass + Neshadur + Gold Solution
green color
The main green color is chromium oxide, which is difficult to dissolve and is used at high temperatures, and because the oxide itself is strong enough to withstand heat, it is not necessary to add aluminum oxide to it. For green materials, pure chromium oxide (o3cr2) is used, and for darkening it, some nickel oxide is used, and for dark green, it is Vnio (O, (Cr2O3) and light green, by heating (Cr2O3). It is obtained by lime or (Caf2) (calcium fluoride) and light greenish-yellow color, a mixture of barium chromate, lime and boric acid is obtained and barium chromate is obtained from barium chloride compounds by adding a small amount of oxide. Iron is produced in a greenish-brown color.
yellow
With lead antimony, yellow can be obtained, which can be used up to (SKo2a). By changing the amount of oxide on (3 (B2O, alkalis and SrO2)) as well as FeO), the content in this color can be obtained from other types of yellow colors. Lemon yellow is used at temperatures of 1,020 to 1,050 degrees Celsius, and can be made slightly more sensitive by increasing the total oxide by 12 percent in the face of rising temperatures. Golden Yellow is the melting point of dyes (4-3- (SK-3a – 4a). Yellow dyes can be oxidized by vanadium oxide, as well as tin and anadiom. This color is used in tin glazes where the amount of calcium oxide is as low as possible. Adding magnesium carbonate makes the color more suitable. In general, the combination of yellow color from iron chips, cream oxide (chromic) tin tin and lead .
(SnO, pbO) + (CrO3) + (Fe2O3)
Purple red
It is obtained from a mixture of tin oxide and gold precipitate. These two substances can be mixed in different proportions. To work with this color, it is better to use it well so that it can be used better and for more delicate works. Its ingredients are: crystal, trunk, dandruff and dissolved gold.
Turquoise color
It is obtained by combining tin, lead, glass powder, flint, tofal crystal, copper, Qom or Naini paint.
(Cupreous lath) + (Crystal) + (flint.Silex) + (pb.Sn)
Tin oxide and lead oxide + flint + glass crumbs + copper chips
Brown color
Brown color can be obtained by mixing Fe2O3, Cr2O3, Al2O3 and ZnO oxides. Another brown color can also be obtained with (manger oxide). But in general, brown color is a combination of iron oxide, green cream oxide and zinc oxide.
(ZnO) + (Cr2O3) + (Fe2O3)
Black “black”
The black material is obtained by mixing iron oxide (Fe2O3, chromium and cobalt oxide (Coo), and if the amount of lime increases, the black color tends to change to brown and with the addition of Coo) cobalt oxide is obtained black. Mix kaolin and feldspar to make the coloring material more suitable for sub-glazed paintings. Of course, with an oxide alone, it’s never possible to get black. Therefore, by mixing several oxides, a complete black color is created, and by using cobalt oxide and iron oxide, and sometimes even other oxides such as chromium and copper, black color is created. This mixture of oxides is ground after heating and used, and it can be said that black is a combination of iron oxide, lead oxide, cobalt oxide and manganese dioxide.
(MnO2) + (Coo) + + pbO) + (Fe2O3)
Gold color (Au)
Gold has long been used to paint enamel glass. Gold has a beautiful color in the glaze and gives a special glow to the body of the glazed objects. This color can be drawn on the glaze body with a thickness of about 14,000 mm. For ordinary gold color, Aucl3 gold chloride is used with a mixture of sulfur organic oils. The lubricants used here are bismuth compounds or often rhodium or thorium salts.
The use of gold in the glaze industry is such that first the liquid obtained from gold, which is often black or burnt brown and painted in the form of bitumen, is painted on the body of the glaze by a brush. It is then heated to 600 to 700. C in the presence of flux compounds. To dilute gold, you can use turpentine (Trabantin) – nitrobenzene – toluene (toluene) or other materials such as oil, gasoline and thinner.
1. The sulfur compounds in gold are not stable and dissolve in acids. The crown also has a golden color. Sulfur is double iron but turns black.
2. Flax: Compounds that balance and bring our cooking temperature together are called fluxes.
And. Toluene: These solvents are organic compounds that are burned and destroyed before reaching 100 degrees Celsius. Care should be taken to ensure that the dispersion of the gold solution is evenly distributed by suspensions, but in a dense and shiny place, the gold changes and becomes disproportionate (organic compounds are compounds that can withstand low temperatures of 100 degrees, if increased).