Cast components for internal combustion engines with embedded reinforcing layers
AssigneeKolbenschmidt Aktiengesellschaft
InventorsWilfried Sander, Siegfried Mielke
Life of this patent
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Abstract
Light alloy components for internal combustion engines consist of castings in which reinforcing layers consisting of non-woven ceramic fibers are embedded in the stressed surface portions. In order to provide a prolonged protection against damage to the light alloy disposed under the reinforcing layer, the open interstices of the fibrous layer are impregnated with a layer of a ceramic material in the portion which is close to the stressed surface and with the light alloy of the component in the portion which is remote from the stressed surface.
Claims11
A cast component for defining the combustion chambers of internal combustion engines comprising:
- a light alloy body, a ceramic surface of hardened ceramic material having a low porosity and which is subjected to at least one of wear and high temperatures and an embedded reinforcing layer connecting the light alloy body and the ceramic surface consisting of nonwoven ceramic fibers or whiskers, wherein open interstices of the fibrous or whisker structure are filled in that portion which faces the ceramic surface with the hardened ceramic material having a low porosity, in that portion which faces away from the ceramic surface is filled with the light alloy, and in an intermediate portion is filled with the ceramic material having a low porosity and the light alloy, and wherein the fibers or whiskers have a diameter of 0.5 to 5 um and a ratio of diameter to length of 1:10 to 1:100, and occupy a volume of 10 to 50% of the overall volume of the reinforcing layer.
Dependencies are inferred from the claim text.