CAJ | 학술논문

以炭黑粉体制成二次炭粒，通过凝胶注模成型制备纯碳反应烧结碳化硅(PCRBSC)坯体，并采用SEM观察了坯体的显微结构。结果表明：分散剂PVP的用量为1.0%-1.5%时，料浆的粘度最低，且合理的颗粒级配能降低料浆的粘度；二次炭粒在37μm以下时，成型坯体颗粒间结合较紧密，强度较高，能满足素坯加工需要；坯体制备过程中的收缩主要来自于成型时的固化收缩，且随料浆固相含量增加，固化收缩率减小。
이탄흑분체제성이차탄립，통과응효주모성형제비순탄반응소결탄화규(PCRBSC)배체，병채용SEM관찰료배체적현미결구。결과표명：분산제PVP적용량위1.0%-1.5%시，료장적점도최저，차합리적과립급배능강저료장적점도；이차탄립재37μm이하시，성형배체과립간결합교긴밀，강도교고，능만족소배가공수요；배체제비과정중적수축주요래자우성형시적고화수축，차수료장고상함량증가，고화수축솔감소。
The green body of pure carbon reaction bonded silicon carbide was prepared by gel-casting with the second carbon black particles made from carbon black, and its microstructure was observed by SEM. The results showed: the viscosity of the slurry was the lowest when 1.0%~1.5% PVP dispersing agent was added, and the reasonable grain size distribution could reduce the viscosity; when the sizes of the second carbon black particles were less than 37μm, the particles were bonded closely together and the strength was higher, so the body could satisfy the needs of processing; the shrinkage of the body while being molded was mainly because of solidifying, and the higher solid loading of slurry, the smaller shrinkage rate in solidifying.