DE Budinger, SJ Ferrigno, WH Murphy - US Patent 5,240,491, 1993 - Google Patents
A series of braze materials for brazing superalloy substrates at effective brazing
temperatures above about 2300 F. is described. The braze materials are formulated as
mixtures of cobalt-and nickel-base alloy powders. Each such braze material contains at least …

SJ Ferrigno, WD Cowie, SR Mannava - US Patent 5,846,057, 1998 - Google Patents
A crack weld repair and method, particularly, for a gas turbine engine blade or other metallic
component in the engine, providing a metallic substrate, a metallic filler bonded onto a
substrate bond surface on the metallic substrate, and a region having deep compressive …

SR Mannava, WD Cowie, SJ Ferrigno - US Patent 5,525,429, 1996 - Google Patents
A metallic article and method for producing such an article, having a metallic substrate, at
least one metallic layer sprayed onto a laser shock peened surface area of the substrate,
and a region having deep compressive residual stresses imparted by laser shock peening …

SJ Ferrigno, M Somerville, WR Young - US Patent 4,830,934, 1989 - Google Patents
An improved mixture of alloy powders is provied for use in treating a preselected article
alloy, for example, to repair or join multiple components of the article. The mixture has at
least three distinct groups of alloy powders which together define a mixture composition …

SJ Ferrigno, WD Cowie, SR Mannava - US Patent 5,735,044, 1998 - Google Patents
A crack weld repair and method, particularly, for a gas turbine engine blade or other metallic
component in the engine, providing a metallic substrate, a metallic filler bonded onto a
substrate bond surface on the metallic substrate, and a region having deep compressive …

R Dzugan, SJ Ferrigno, WR Young… - US Patent …, 1991 - Google Patents
A superalloy article is fabricated by casting a high melting temperature superalloy
composition and then refurbishing the primary defects that are found in the surface of the
cast piece. The article is refurbished by excising the primary defects and a surrounding …

…, HJ Farr, TJ Kelly, PJE Monson, SJ Ferrigno - US Patent …, 1997 - Google Patents
A method for forming a blade tip on a turbine blade of a gas turbine engine includes
providing a powder alloy from a family of environmentally-resistant powder alloys and
forming the blade tip by melting and fusing the powder alloy to the turbine blade. The blade …

RP Chesnes, SJ Ferrigno, DE Budinger… - US Patent …, 1997 - Google Patents
A braze material is provided for repairing an article, and particularly components formed
from cobalt and nickel-base superalloys, such as gas turbine engine components. The braze
material is composed of high melt particles distributed within a braze alloy. The braze alloy …

…, B Wei, JA Ruud, MA Rosenzweig, SJ Ferrigno - US Patent …, 2003 - Google Patents
An electrochemical stripping method for selectively removing at least one coating from the
surface of a substrate is described. The substrate is immersed in an aqueous composition
through which electrical current flows. The composition includes an acid having the formula …

CP Lee, MR Jackson, SJ Ferrigno - US Patent 6,634,860, 2003 - Google Patents
A turbine airfoil is provided having an integral tip cap and a pair of tip walls which extend
radially outward past the tip cap to form a squealer tip. A coaxial pair of first and second
holes extend through the tip cap and one of the tip walls respectively at an acute inclination …