The reaction sintering method of SiC was first successfully studied in the United States. The process of reaction sintering is as follows: firstly － SiC powder and graphite powder are mixed in proportion, and the porous green body is made by dry pressing, extrusion or grouting. When contacted with liquid Si at high temperature, C in the green body reacts with infiltrated Si to form － SiC, and with － SiC is combined, and excess Si is filled in the pores, thereby obtaining a non porous and dense reaction sintered body. Reaction sintered SiC usually contains 8% free Si. Therefore, in order to ensure complete Si infiltration, the blank should have sufficient porosity. Generally, by adjusting the initial mixture － The content of SiC and C, － The particle size distribution of SiC, the shape and particle size of C, and the CUMATIUM pressura potest ad obtinendum oportet viridi density {{VI}}
Et experimenta ostende quod in sic Ceramics cum improperabant peccare, calidum urgeat peccating, calidum isostatic urgeat peccating et reactionem peccating in terms of Sincering SIC Ceramics, {{I} Sinctoring SIC Ceramicing et Relative {{I} De Sincering SIC Ceramicing, quod est relative {{I}} in altero, mechanica properties of SiC ceramics are also different with different sintering additives. Pressureless sintering, hot pressing and Reaction Sintering SiC ceramics have good resistance to strong acids and alkalis, but Reaction Sintering SiC ceramics have poor resistance to ultra strong acids such as HF. When the temperature is lower than 900℃, the strength of almost all SiC ceramics is improved; Cum temperatus excedit MCD gradu, flectens vires reactionem SINTERED SIC Ceramics decrescit acriter {{VI}} (hoc est quod talpas, quod maxime afficit, cum sit, quod tormentis, quod maxime afficit, quod est quodammodo, quod maxime afficitur, quod maxime afficiendis et calidum est maxime affectus est genus addited
