Very High purity silicon for semiconductors is obtained using the Siemens approach; the silicon is reacted to make trichlorosilane, which is very first purified by distillation, then reacted with purified hydrogen on substantial purity silicon rods at 1150 oC to generate significant purity, polycrystalline silicon with hydrochloric acid byproduct. Silicon https://glass-lined-carbon-steel26913.blogsvila.com/36552813/b4c-ceramic-fundamentals-explained