Investigation the Effect of Additive Content and Sintering Temperature on the Mechanical Properties of Clay-Bonded and Glass-Bonded Ceramic Parts Produced by Low Injection Molding Method

In this paper, porous SiC parts were produced by the low-pressure injection molding method. The effects of two different silicate-based additives, initial additive content, powder size, and sintering temperature on the morphology, porosity, and mechanical strength of the porous SiC parts were investigated. Aluminum silicate and borosilicate glass were used as the additive materials with different contents of 5-20 wt%. SiC powder with grain size of 3 mu m and 15 mu m was used as the main material, and the injected parts were sintered at 1200-1400 degrees C in air. The design of experiment method was used to analyze the results of the experiments. Fracture surface morphology was observed by scanning electron microscopy, and the crystalline phases of the specimens after sintering were identified using X-ray diffraction.