United Technologies Corporation

Thomas A Eckler

Brian A Manty

Shiro Fujishiro

Titanium and titanium alloy particles are provided with improved mechanical properties through the use of ion implantation. Ions of elements selected from the noble metals and titanium are employed. Ion energies of 50-200 kev and ion densities of at least 10.sup.14 ions/sq. cm. are employed.

Fatigue resistant tatanium alloy articles

A method for electrolytically etching metals. Nickel superalloys are etched with uniform grooves using a 10 volume percent HCl aqueous solution and periodically reversed current. An aperture containing shield is interposed between an upward facing workpiece and an electrode. The shield is adapted to divert gases evolved at the workpiece from passage to electrode. Controlled roughness in an etched surface is produced by varying electrolyte temperature. Preferred smooth finish is obtained at 7.degree. C.

Method for electrolytic etching

An apparatus for electrolytically etching a precision groove pattern in a metal workpiece. A concave shaped shield having a small aperture contains the electrode. The shield diverts gases evolved at the upward facing workpiece away from the electrode while still allowing circulation of electrolyte about the electrode.

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Lake Park, FL, United States of America

Thomas A Eckler