Strontium carbonate is used in the manufacture of color TV cathode-ray tubes, electromagnets, strontium ferrite, pyrotechnics, fluorescent glass, flares, etc.. It is also the raw material for producing other strontium salts. Used as the basic powder for the production of special PTC thermistor elements (switch start, demagnetization, current limiting protection, constant temperature heating, etc.)
This powder can be rapidly dispersed into emulsion
Strontium carbonate is used in the manufacture of color TV cathode-ray tubes, electromagnets, strontium ferrite, pyrotechnics, fluorescent glass, flares, etc.. It is also the raw material for producing other strontium salts. Used as the basic powder for the production of special PTC thermistor elements (switch start, demagnetization, current limiting protection, constant temperature heating, etc.). It is the basic raw material for the production of strontium salts.
Barium carbonate is used in the preparation of fireworks and flares. It is also used as an auxiliary material for ceramic coatings and optical glass. It is used in the manufacture of electronic ceramics, PTC thermistors, capacitors, and other electronic components. It is used in the manufacture of optical glass, picture tube glass barium magnetic material, capacitors, etc. Also used for steel carburizing and metal surface treatment. It is also used in the manufacture of other barium salts and raw materials for ceramics, enamel, pigments, paints, rubber, and welding rods.
(1) ceramic blanks containing strontium carbonate cause fewer pinholes or bubbles than those containing magnesium carbonate, calcium carbonate, barium carbonate. This is because strontium carbonate is easy to decompose, the decomposition temperature is lower (1340 ℃). While the decomposition temperature of barium carbonate is high (1450 ℃), more stable. Therefore, before the ceramic blank is fused and closed, strontium carbonate has decomposed the carbon dioxide gas inside, while barium carbonate has not yet decomposed or completely decomposed. When the temperature is further increased, the ceramic blanks containing barium carbonate can easily develop pinholes or bubbles. Although magnesium carbonate and calcium carbonate do not have the problem of high decomposition temperature. But they are outstanding short performance, especially calcium carbonate. And strontium carbonate is a relatively longer sex. In the case of high temperature, its glass phase does not fall too low viscosity and over-burning blistering.
(2) strontium oxide gives ceramic blanks higher wear resistance and toughness. While the addition of barium oxide ceramic blanks often increases the brittleness and becomes fragile.
(3) Strontium oxide gives the ceramic blank a high whiteness. This is because the composition of strontium carbonate contains less iron and other impurities, while barium carbonate often contains more iron.
(4) Strontium oxide gives ceramic blanks a low porcelain shrinkage, which can lead to low deformation of the blanks.
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