Brown fused alumina and white corundum, which one is better?
Brown fused alumina and white corundum each have their own characteristics and advantages.
Which one is better depends mainly on the specific application scenario and needs.
The following is a detailed comparison of the two:
Hardness and wear resistance:
Brown fused alumina: It has high hardness, its hardness is close to that of diamond, and its wear resistance is also very strong, which is suitable for fine processing and grinding of materials. Brown corundum has higher toughness than white corundum.
White corundum: Its hardness is also very high, second only to diamond, so it has excellent wear resistance and is suitable for occasions requiring high-precision and high-efficiency grinding and polishing. The hardness of white corundum is slightly higher than that of brown fused alumina.
Color and composition:
Brown fused alumina: It usually appears brown, contains impurity elements such as chromium and manganese, and its main raw material is bauxite.
White corundum: It appears white, has a pure texture, and its main raw material is alumina powder.
Conductivity and insulation:
Brown fused alumina: It has certain conductive properties, so it can be used as an electrical material in some special occasions.
White corundum: It is an excellent insulating material with high resistivity and insulation performance. It is widely used in the fields of electronics, electrical engineering and high-temperature insulation.
Thermal stability:
Brown corundum: It has good thermal stability and can maintain the stability of its physical and chemical properties in high temperature environments. Therefore, it is widely used in refractory materials, high temperature resistant ceramics and other fields.
Optical properties and chemical stability:
White corundum: It has good optical transparency and plays an important role in the field of gem processing. It has good corrosion resistance to acids, alkalis and most chemicals and can remain stable in various chemical environments.
Application scenarios:
If the application scenario has high requirements for wear resistance and is not sensitive to color, white fused alumina is usually a better choice because it has higher hardness and stronger wear resistance.
If the application scenario requires the material to have a certain conductivity, then brown fused alumina may be more suitable.
If the application scenario has specific requirements for color, such as brown-red or white, then brown or white corundum can be selected according to actual needs.
When considering cost, brown corundum may have a higher cost-effectiveness in certain application scenarios. In summary, brown corundum and white corundum are both high-quality abrasive materials with their own characteristics and advantages. Choosing which one is better needs to be comprehensively considered according to the specific application scenario and needs.
