IMPACT RESISTANT COATINGS FOR NICKEL-BASE AND COBALT-BASE SUPERALLOYS AND THE LIKE

摘要

In the production of impact and oxidation resistant nickel-base metal coatings on heat resistant superalloys by pack aluminizing in which nickel aluminide is formed to provide the protective coating, markedly improved ductile coatings are produced of high impact resistance by controlling the amount of aluminum in the pack which also contains about 5 to 40 percent by weight of chromium, the amount of aluminum not exceeding 3 percent by weight of the pack.