METHOD FOR FORMING Re ALLOY COATING FILM HAVING HIGH Re CONTENT THROUGH ELECTROPLATING

摘要

A method for forming a Re alloy coating film having a high Re content such as a Re coating film having a Re content of 98 atomic % or more, an alloy coating film containing Re in a content of 65 % <= Re < 98 % and at least one of Ni, Fe and Co, or the like, which comprises using an electroplating bath comprising an aqueous solution containing, a perrhenate ion, at least one of ions of Ni, Fe, Co, Cr and the like and further at least one selected from a Li ion and a Na ion. The formation of a Re alloy coating film having a high Re content being used as a corrosion-resistant alloy coating film for a member of a high temperature device through an electroplating using an aqueous solution has allowed the impartation of high heat resistance and corrosion resistance also to a member of a device having a complicated shape, with ease and at a low cost.