Silicon carbide polishing, lapping, shaping
Silicon carbide manufactured by CVD process can be polished to a finish of a few Angstroms. Reaction bonded silicon carbide can be polished to 20 - 50 Angstrom finish only. Hot pressed silicon carbide is polishable to 50 - 100 Angstrom level. Sintered silicon carbide polishes to 100 Angstroms and often much higher, depending on material quality.