Patent ID: 9011667
Filing Date: 2015-04-21
Classification: B82Y,C01G,C01P,C23C,C25D,H01M,Y02E,Y02P,Y10T

Abstract:
1. A method of making a metal oxide nanotube assembly comprising: providing a substrate comprising stainless steel; providing a valve metal on the substrate, the valve metal comprising at least one of titanium, zirconium, niobium, tantalum, hafnium or alloys or mixtures thereof; anodizing said valve metal in an electrolyte solution to cause the formation of a nanotube assembly on the valve metal surface and so that nanotubes of the nanotube assembly have an average diameter of 60-75 nm and a length ranging from 15-300 nm; and passivating said valve metal in an electrolyte solution at an anodizing potential or voltage such that the electric current flowing through the valve metal reaches a minimum level and the valve metal is corrosion resistant.