CAJ | 학술논문

以碳化硅（SiC）微粉为骨料,Al2O3-Y2O3为烧结助剂,氯化钙（CaCl2）作为造孔剂,采用无压液相烧结制备了表面微孔SiC陶瓷,分析了不同CaCl2含量对SiC陶瓷的烧结性能、显微结构和摩擦性能的影响。结果表明：加CaCl2会降低SiC陶瓷的体积密度、硬度和抗弯强度;可以有效地细化SiC陶瓷晶粒;能在SiC陶瓷表面形成许多分布均匀的微小气孔及气孔群,有效地降低SiC陶瓷的摩擦系数。
이탄화규（SiC）미분위골료,Al2O3-Y2O3위소결조제,록화개（CaCl2）작위조공제,채용무압액상소결제비료표면미공SiC도자,분석료불동CaCl2함량대SiC도자적소결성능、현미결구화마찰성능적영향。결과표명：가CaCl2회강저SiC도자적체적밀도、경도화항만강도;가이유효지세화SiC도자정립;능재SiC도자표면형성허다분포균균적미소기공급기공군,유효지강저SiC도자적마찰계수。
With SiC powder as raw materials,Al2O3-Y2O3 as sintering additive and calcium chloride as pore former,microporous silicon carbide ceramics were prepared by pressureless sintering.The effects of CaCl2 on the sintering properties,microstructure and friction performances of SiC ceramic specimens were studied.The results showed that calcium chloride decreased the density,hardness and bending strength of SiC sinters and miniaturized the crystal size of SiC ceramics.There were lots of pores on the surface of SiC ceramics.The addition of CaCl2 reduced the friction coefficient efficiently.