Preparation and Properties of Silicon Carbide Ceramic Materials Under Specific Conditions

Abstract

In this paper, the reaction sintering process was used to prepare and conduct experiments on ceramic materials. And the electrical properties and friction properties were analyzed. Density is an important factor affecting the strength of ceramic materials. Generally speaking, the room temperature performance of ceramic materials has the greatest relationship with the relative density, because pores are the location of stress concentration, which often leads to the reduction of mechanical properties. In this paper, it is found in the preparation experiment that the pore-forming agent addition amount of about 2% has the best effect. The research results of the friction and wear behavior of ceramic materials show that the load, lubrication conditions and friction pairs greatly affect the friction and wear properties of the materials. The stable friction coefficient and wear rate of the material both increase with the increase of the load. The water lubrication condition can significantly reduce the wear rate of the material, and the reduction range is two orders of magnitude, which greatly improves the wear resistance of the material. Compared with pure ceramic materials, reactive sintered composite ceramic materials have more excellent mechanical properties and tribological properties. They are a kind of potential structural ceramic materials and have broader application prospects, which are expected to replace the currently widely used ceramic materials.