At present, the ultrafine spherical alumina powder produced and sold by Sanrui Baide mainly includes two series: high-purity series and easy-to-sinter series, with four major categories of products. The high-purity series products are divided into two major categories: DC3 and DC4. The powder D50 is controllable within the range of 100 nanometers to 10 microns. The products can control the types and contents of impurities according to customer requirements, and the purity of alumina can reach up to 99.999%. The Easy sintering series products are divided into two major categories: DCS3 and DCS4. The powder D50 is controllable within the range of 100 nanometers to 5 microns. The product can control the impurity content and sintering temperature according to customer requirements, with the lowest sintering temperature reaching up to 1400℃. The high-purity series and easy-to-sinder series products can be applied to fields such as thermal conductive materials, transparent ceramics, advanced ceramics, functional fillers, grinding and polishing, ceramic 3D printing, ceramic films, lithium battery separator coatings, light diffusers, ultraviolet reflective coatings for fluorescent lamps, and oxygen sensor coatings according to their respective product characteristics.

The high-purity series products are ultrafine spherical alumina powder materials produced by direct combustion method using high-purity aluminum (3N, 4N) as raw materials. The products are classified into two major categories based on purity: DC3 and DC4, corresponding respectively to the two purities of raw high-purity aluminum 3N and 4N. The high-purity series products are classified into five categories based on different particle sizes: S, F, U, C, M, and L, corresponding to five particle sizes of D50=0.15, 0.15, 0.25, 4, 8, and 10 microns respectively. The high-purity series products can be surface-modified according to different customer requirements, or supplied as suspensions or granulation powders, which are respectively marked with L, S, and G.

The high-purity series of products feature high purity and are particularly suitable for fields such as thermal conductive materials, transparent ceramics, functional fillers, grinding and polishing, ceramic films, lithium battery separator coatings, and light diffusers. They can also be modified on the surface to be applicable to different solvent systems.

The easy-to-sinter series of products are ultrafine spherical alumina powder materials made by adding a certain amount of sintering-promoting components to the raw material high-purity aluminum and then using the direct combustion method. Compared with the high-purity series, the sintering temperature of the powder is significantly reduced, making it easier to obtain high-density materials. The products are classified into two major categories based on impurity content: DCS3 and DCS4, corresponding respectively to the two purities of raw material high-purity aluminum: 3N and 4N. The Easy sintering series products are classified into two types, F and U, based on different particle sizes, corresponding to two particle sizes of D50=0.15 microns and D50=0.25 microns respectively. The easy sintering series products can be surface-modified according to different customer requirements, or supplied as granulation powder, marked in L and G respectively. The sintering temperature can also be adjusted according to customer requirements.

Among the Easy sintering series, the DCS300 and DCS400 specifications are direct-fired ultrafine spherical alumina powder materials without the addition of sintering-promoting components. They adopt a brand-new surface activation technology. The new activation technology can significantly reduce the sintering temperature of high-purity spherical powders while maintaining their high purity, achieving a sintering effect similar to that of adding sintering-promoting components. It is particularly suitable for occasions with high purity requirements.

The Easy sintering series products feature low sintering temperature, high sintering density, high material filling rate and good fluidity. They are particularly suitable for fields such as transparent ceramics, advanced ceramics, ceramic 3D printing and ceramic films.