1
turbines by methods such as electroforming where channel-forming material is then removed, after trench has been covered, eog by melting, chemical dissolution or mechanical removal. ELECTROLESS NICKEL PLATING SOLUTIONS EP 1378584 (Atotech Deutschland GmbH) Shahin, G.E. Electroless nickel plating solutions based on nickel salts of alkyl sulfonic acids as the source of nickel ions. The plating solutions utilize, as a reducing agent, hypophosphorous acid or bath soluble salts thereof selected from sodium hypophosphite, potassi- um hypophosphite and ammonium hypophosphite. These solutions are free of added nickel hypophos- phite, and free of alkali or alkaline earth metal ions capable of forming an insoluble orthophosphite. CORROSION RESISTANT TRIVALENT CHROMIUM PHOSPHATED CHEMICAL CONVERSION COATINGS EP 1378585 (United Technologies Corp.) Bhatia, P. An acidic aqueous solution containing a water solu- ble trivalent chromium compound is provided with an additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP). HIGH-TEMPERATURE ARTICLES AND METHOD FOR MAKING THESE EP 1378587 (Gen. Electric) Zhao, J.C.; Lipkin, D.M. Nickel aluminide coated metal article has substan- tially single-phase coating comprising nickel (Ni) and at least about 30 atomic percent aluminum (A1); the coating further comprises a gradient in A1 com- position, the gradient extending from a first A1 con- centration level at an outer surface of the coating to a second A1 concentration level at an interface between the substantially single-phase coating and the substrate, wherein the first A1 concentration level is greater than the second A1 concentration level and the second concentration level is at least about 30 atomic percent A1 ZINC PHOSPHATE-CONTAINING CONDITIONING AGENT FOR PHOSPHATE CONVERSION-TREATMENT OF STEEL Circle 103 on reader information card or go to www.thru.to/webconnect 90 Metal Finishing
