Clay bonded silicon carbide products are prepared with silicon carbide and silica powder as the main raw materials and clay as the binder.The influence of different moulding pressures(100 MPa,150 MPa,180 MPa,200 MPa,and 230 MPa)and particle grading on the microstructure and properties of silicon carbide products are studied.The results show that when 17%silicon carbide fine powder is added,the bulk density value is 2.42 g/cm3,and the room temperature compressive strength and flexural strength are 83.46 MPa and 17.4 MPa,respectively;meanwhile,the oxidation resistance has been further improved.When the molding pressure is 230 MPa,the mechanical properties and oxidation resistance of the pressed samples reach their maximum values.
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