Ceramic component and method of forming same

Abstract

A body including a first phase having silicon carbide, a second phase comprising a metal oxide, the second phase being a discrete intergranular phase located at the grain boundaries of the first phase, and the body has an average strength of at least 700 MPa.

Description

technical field [0001] The following relates to a body comprising silicon carbide, a powder material mixture for forming such a body, and a method of forming such a body. Background technique [0002] Various composite materials including certain ceramic composite bodies incorporating silicon carbide are commercially available. Silicon carbide-based ceramic materials have been utilized in many applications due to their refractory and / or mechanical properties. Among the types of silicon carbide-based ceramics available, there are various types based on a specific forming process, including, for example, sintered silicon carbide, hot-pressed silicon carbide, and recrystallized silicon carbide. Each of the various types of silicon carbide bodies can have different characteristics. For example, sintered silicon carbide (such as ) can be a very dense material, but is usually expensive and complicated to manufacture. On the other hand, more cost-effective but relatively porou...

AI Technical Summary

Problems solved by technology

While nitride-bonded silicon carbide has desirable high-temperature properties, it is unfortunately less resistant to oxidation when used under oxidizing conditions, in part due to its inherent porosity

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