| 摘要 |
<p>An electrical resistance heating element obtained by hardening a homogeneous mixture comprising as major components at least one of conductive powders of silicon nitride, silicon carbide, molybdenum silicide, zirconium, silicon, FeO, Fe3O4, nickel, cobalt, germanium, chromium, nickel-chromium, carbon, graphite, etc., portland cement, and at least one member selected from among chlorine-containing hardeners such as sodium chloride, potassium chloride, rubidium chloride, beryllium chloride, magnesium chloride, calcium chloride, strontium chloride, barium chloride, cobalt chloride, etc. This element is obtained at a low cost with high quality and high efficiency without the need of sintering.</p> |
