METHOD OF ALUMINIZING OF HIGH-TEMPERATURE ALLOY WITH HIGH CONTENT OF RHENIUM (VERSIONS) Russian patent published in 2002 - IPC

FIELD: application of aluminide coatings to high-temperature alloys, particularly, to single-crystal high-temperature alloys. SUBSTANCE: method of aluminating of high-temperature alloy with high content of rhenium includes the following stages: (a) modification of high-temperature alloy surface with high content of rhenium by application of chromium or cobalt layer to alloy surface and heat treatment for diffusing chromium or cobalt into high-temperature alloy with high content of rhenium to reduce rhenium content on surface of high-temperature alloy; (b) aluminizing of high-temperature alloy with high content of rhenium for formation of aluminate coating. In this case, rhenium content in high-temperature alloy amounts up to at least 3.5 wt. %. EFFECT: prevention of formation of topologically highly compacted phases promoted quick degradation of protective coatings on boundary between aluminide coating and rhenium-containing single-crystal high-temperature alloy. 24 cl, 6 dwg, 4 ex