Ceramics For High Heat Applications

In some cases their electricity insulating properties may also be valuable in bearings.

Ceramics for high heat applications.

Ultra high temperature ceramics uhtcs are a class of refractory ceramics that offer excellent stability at temperatures exceeding 2000 c being investigated as possible thermal protection system tps materials coatings for materials subjected to high temperatures and bulk materials for heating elements. Ceramics are also more chemically resistant and can be used in wet environments where steel bearings would rust. High temperature heat exchangers based on ceramic materials open up such opportunities in many applications. These unique characteristics can be further developed optimised and matched for use in industrial applications.

This issue can be solved by using high temperature heat pipes with a ceramic pipe container. This paper outlines the results of the ongoing work on the design of such heat. State of the art for high temperature heat pipes are nickel based alloys as container material and alkali metals as working fluids cs k na li. Technical ceramic materials stand out due to unique set of properties such as high resistance to corrosion erosion and wear electrical and thermal insulation at high temperatures and high heat resistance.

In very high speed applications heat from friction during rolling can cause problems for metal bearings which are reduced by the use of ceramics.