Thermal shock resistant silicon carbide electric heating element and processing technology thereof

The invention relates to the field of electric heating elements, in particular to a thermal-shock-resistant silicon carbide electric heating element and a processing technology thereof.The thermal-shock-resistant silicon carbide electric heating element is prepared by using in-situ nanowire toughened silicon carbide synthesized by a polycarbosilane and ferrocene modified organic framework as an original part of the electric heating element, and then sequentially performing chemical vapor infiltration and precursor impregnation, cracking and conversion, thereby obtaining the thermal-shock-resistant silicon carbide electric heating element. The toughness and thermal shock resistance of silicon carbide are greatly improved, coating slurry is prepared from basic glaze, a ferrocene modified organic framework and polyvinyl alcohol, and a compact cordierite-mullite surface is constructed on the surface of an original electric heating element; the preparation method comprises the following steps: by taking 4, 4-diami