In this paper a new technique for high speed anodization in a dc oxygen discharge is reported. A 0.0025-cm-diam wire biased 50 V positive with respect to the anode caused a ten- to fifteenfold increase in the anodization rate. Rates as high as 30 A/ min were observed with a sample current denisty of 1.15 mA/ cm2. With a current density of 0.21 mA/ cm2 the Faraday efficiency was 15%. It is postulated here that the observed effects are due to increased surface ionization of adsorbed atomic oxygen.