▎ 摘　　要

NOVELTY - Square graphene reinforced silicon carbonitride ceramic temperature sensor is amorphous state temperature sensitive element with square graphene provided on the surface of the silicon carbonitride ceramic. The square graphene reinforced silicon carbonitride ceramic has two equal diameter holes to attach platinum wire and to obtain temperature sensor. USE - Square graphene reinforced silicon carbonitride ceramic temperature sensor. ADVANTAGE - The square graphene reinforced silicon carbonitride ceramic temperature sensor is prepared in simple manner under mild reaction conditions and is easy to obtain. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing square graphene reinforced silicon carbonitride ceramic temperature sensor, which involves: (A) mixing precursor polysilazane and graphene oxide by ultrasonic method; (B) adding dicumyl peroxide for thermal cross-linking; (C) adding liquid silicon and powdered black solid spherical graphite; (D) compressing mixture to obtain cylindrical silicon carbonitride ceramic preform; (E) sintering preform in inert atmosphere to obtain cylindrical graphene reinforced silicon carbonitride ceramic; (F) mixing precursor polysilazane and graphene oxide by ultrasonication; (G) performing UV cross-linking to convert the liquid polysilazane into mixed black polysilazane and graphene oxide; (H) depositing the graphite powder into the silicon carbonitride ceramic body; (I) preparing the silicon carbonitride ceramic by the method of ultrasonic wave; (J) dispersing the graphene oxide in tetrahydrofuran organic solvent; (K) mixing precursor polysilazane and graphene in tetrahydrofuran organic solvent; (L) carrying out thermal cross-linking; (M) converting liquid polysilazane into black polysilazane and graphene oxide mixed solid; (N) sintering solid in inert atmosphere to obtain cylindrical graphene-reinforced silicon carbonitride ceramic; (O) grinding obtained cylindrical graphene-reinforced silicon carbonitride ceramic in grinding machine; (P) drilling two holes on the surface of the square ceramic piece by punching machine; (Q) cutting into cylindrical square ceramic pieces; (R) carrying out vacuum impregnation process of liquid polysilazane into the two holes; (S) inserting the platinum wire and then inserting platinum wire into tube; and (T) sintering under nitrogen atmosphere to obtain product.