Silicon carbide was the main commercially critical semiconductor material. A crystal radio "carborundum" (artificial silicon carbide) detector diode was patented by Henry Harrison Chase Dunwoody in 1906. It discovered Substantially early use in shipboard receivers. The earliest electrical application of SiC was like a surge safety in lightning arresters in https://cncbendingmachine82570.blogocial.com/zirconium-carbide-price-an-overview-70126364