Application of white fused alumina in coating field
First,what is white fused alumina?
White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase α-Al2O3.
Secondly,What is the main properties of white fused alumina?
1.High purity-more than 99.% Al2O3
2.High Hardness-Mohs hardness is about 9.0,higher than brown fused alumina.
3.Highly concentrated particle size distribuion-it was produced via acid washed and overflow classification process.
Thirdly,what is the effect of what fused alumina in coating field?
1.Increase the hardness and abrasive resistance of coating.
The added white fused alumina in coating can improve its hardness and abrasive resistance,thus decrease the abrasion and burn-in,and make coating more durable.
2.Improve adhesion of coating film.
Due to the uniform fine size of white fused alumina,it can fill the tiny pits of coating film to improve the smoothness of coating film,and furtherly increases adhesion and durablity of coating film.
3.Upgrade gloss of coating film
Because of the high hardness and smoothness of white fused alumina grains,white fused alumina can play a abrasive role in coating,making the coating surface smoother and increasing the gloss to get better visual effect.
