99% aluminum oxide powder for ceramic glaze
Glaze is an important component of ceramic tiles. Good glaze can not only improve the practicality of ceramic tiles but also enhance their aesthetics and grade. Adding 99% aluminum oxide powder 6000 # and 8000 # to ceramic tile glaze can improve its wear resistance, scratch resistance, corrosion resistance, and other performance. The cost of aluminum oxide powder is also much lower than that of zirconium silicate powder.
99% aluminum oxide powder is a white color fused aluminum oxide powder that has been melted at high temperatures for 24 hours. And its natural source is bauxite. The industrial aluminum oxide produced by the Bayer process smelting of bauxite is the direct raw material for electro-fused aluminum oxide. After electric melting, more than 90% of the crystalline phase of alumina is transformed into α-Al2O3. It has the characteristics of high-temperature resistance, high hardness, and resistance to chemical erosion.
The advantages of 90% aluminum oxide powder as a ceramic tile glaze are as follows:
1. Improve wear resistance and scratch resistance.
The wear resistance of ceramic tiles is an important indicator for measuring quality. The Mohs hardness of fused aluminum oxide powder is 9.0. The Rockwell hardness is 75HRC. And the Vickers hardness is 2200-2400kg/mm2. It is one of the best artificial abrasives and also a wear-resistant agent for many ceramic, plastic, and glass products. Ceramic tiles adding white aluminum oxide have high physical strength.
2. Improve the slip resistance of ceramic tiles.
The addition of fused aluminum oxide powder can improve the slip resistance of ceramic tile glaze, prevent slipping after wetting, and improve safety.
3. High refractory temperature.
The melting point of electrofused aluminum oxide powder is 2050 ° C, with a refractory temperature of 1800 ° C. It maintains good high-temperature performance during the firing process of ceramic tiles or ceramics.
4. Maintain a good appearance of the glaze.
Aluminum oxide fused powder 6000 # 8000 # is a type of ultrafine powder with particle size distribution of 2.5 microns and 1.5 microns. In addition, the microstructure of white alox fine powder is white and semi-transparent. Adding it to the glaze will not affect the appearance of the tiles.
5. Improve pollution and corrosion resistance.
99% aluminum oxide does not react with most strong acids and alkalis, has strong chemical stability, can prevent the infiltration and solidification of stains, is easy to clean and maintain, and maintains the original appearance of ceramic tiles.
6. Maintain the stability of the ceramic tile firing form.
The thermal expansion coefficient of white aluminum oxide is 3.34×10-6/K at 300 ° C, 5.1×10-6/K at 500 ° C, and 6.63×10-6/K at 1000 ° C. It can maintain a good and low thermal expansion rate during glaze curing. To avoid deformation caused by glaze expansion.
