Overview of recrystallized sintered powder:
Recrystallized silicon carbide is also known as recrystallized silicon carbide Fine silicon carbide as raw material, silicon carbide at 2400 ℃ high temperature and a certain pressure Under the protection of force, evaporation condensation recrystallization occurs The sintering body formed by intergrowth of particles occurs at the contact of particles.It's basically not Shrinkage, but with a certain number of pores.
Main technical specifications:
Name product | Specification and granularity | Appearance color | Purity (%) | Iron (%)
| Carbon (%) |
Recrystallized sintered powder |
F8#—F220# |
Pure green |
≥99% |
≤0.02% |
≤0.01% |
Other specifications can be customized according to user requirements
Preparation of recrystallized sintered powder:
Reconstituted silicon carbide (RSIC) is a kind of high-purity SiC product, which is made of SiC powder synthesized by Acheson method. After the raw material of coarse and fine SiC powder is molded, it is evaporated and condensed in the neck formed by coarse particles at high temperature to make it have a certain strength. There is no shrinkage during the sintering process, so it has high porosity.
Research and development of recrystallized sintered powder:
Reconstituted silicon carbide (RSIC), as a kind of SiC ceramic products, was successfully prepared in the 1950s, mainly to use its unique high-temperature mechanical properties for high-temperature appliances, until the 1970s, it began to be widely used.During this period, the sintering mechanism, performance improvement and industrialization were studied.Because the grouting method can obtain higher density and thus obtain higher mechanical properties and service life, the initially mainly used compaction method is gradually replaced by the increasingly mature grouting method. With the progress of grouting technology, such as pressure grouting, centrifugal grouting and the emergence of new mold materials, the grouting method plays a more important role in RSIC molding.With the new demand, the reconstituted silicon carbide (RSIC) has developed from the original high temperature tool to the application in many fields of structure and function.
