Ceramics For High Heat Applications

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.

Ceramics for high heat applications.

Similarly in applications closer to us such as infrared heaters in modern houses high temperature furnaces barbeque grills and household heating appliances glass ceramics stand out with their sleek stylish look the versatile material options and their ability to resist different influences. 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. Broadly speaking uhtcs are borides carbides nitrides and oxides of early. High temperature heat exchangers based on ceramic materials open up such opportunities in many applications.

Ceramics are also more chemically resistant and can be used in wet environments where steel bearings would rust. This issue can be solved by using high temperature heat pipes with a ceramic pipe container. State of the art the heat pipe technology is well known for very high heat fluxes. 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.