The Babcock & Wilcox Company

Mark J Topolski

James M Tanzosh

William C Mack

An improved method for increasing a selected metal composition of a substrate includes plating the selected metal component on the substrate followed by providing a single pass weld overlay with the selected metal containing weld filler metal to increase the metal weld clad deposit.

Method for making alloying additions to the weld overlay weld pool

A method for coating a substrate with a corrosion resistant surface comprises the steps of coating a portion of the substrate with a nickel (II) nitrate hexahydrate solution. The solution-coated substrate is then heated to a temperature greater than 303.degree. C. until a nickel oxide coating remains.

Corrosion resistant nickel oxide surface coating

The surface hardening diffusion process for an austenitic material such as 300-series stainless steel uses a pack carburization process at a temperature range from about 1500.degree. F. to about 2500.degree. F. for a period of time ranging from about one (1) to about eight (8) hours. Chromium carbides are formed on the surface of the austenitic material for increasing its wear resistance.

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Canton, OH, United States of America

Mark J Topolski