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Abstract

Composite for the transfer of the heat between the hot and cooled surface, whereby the composite is resistant to high temperatures, includes at least two components, one of the components is produced by longitudinal segments (1) with the melting temperature that is higher than 1300° C. and which are separated from each other by the filling (2) with the higher heat conductivity and thermal expansivity, which is in the direct contact with the cooling medium in the channel (3). Both components are in the direct contact with the hot environment surrounding the composite, whereby the overall surface formed by the segments (1) is 50 to 95% of the overall hot surface of the composite. The longitudinal axis of the segment (1) is primarily oriented in the direction of the shortest line connecting the hot surface with the cooled surface of the composite with the allowed deviation of 45° at maximum, whereby in the direction from the hot to the cooled surface it can cross one boundary between the components at maximum. The material for the segments can be tungsten, preferably tungsten with the admixtures of oxides La₂O₃ and/or Y₂O₃ and/or CeO₂ and/or ThO₂ and/or ZrO₂. The matrix, that is, the filling (2) can be copper or silver or their alloys.

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First Claim