Chemical milling of titanium
AssigneeGeneral Motors Corporation
InventorYu-Lin Chen
Life of this patent
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Abstract
Process for chemically milling titanium using an aqueous milling solution consisting essentially of (by weight) about 1% to 5% HF, about 1.5% to 4% chlorate ion and optionally up to about 20% of an acid selected from the group consisting of H.sub.2 SO.sub.4, HCl and HNO.sub.3.
Claims5
In the method of chemically milling titanium comprising the principle steps of contacting a surface of said titanium to be milled with aqueous milling solution for a time sufficient to corrode said surface a predetermined amount, the improvement wherein said solution, by weight, consists essentially of 1% to about 5% hydrofluoric acid, about 1.5% to about 4% chlorate ion, and, optionally, up to about 20% of an acid selected from the group consisting of H.sub.2 SO.sub.4, HCl, and HNO.sub.3.
Dependencies are inferred from the claim text.