Abstract: A process includes patterning a surface of a platinum group metal-based electrode by contacting the electrode with an adsorbate to form a patterned platinum group metal-based electrode including platinum group metal sites blocked with adsorbate molecules and platinum group metal sites which are not blocked.

Abstract: The invention relates to a method and apparatus for processing a metal material. In the present invention, a chlorine hydrocarbon solution, water and surfactant solution are mixed together. As an alternative to chlorine hydrocarbon solution, methylene chloride solution may be used. The mixture solution is heated to generate chlorine hydrocarbon gas, water vapor or steam and surfactant gas. The gas mixture fills a hermetically sealed processing tank and permeates a metal material, particularly, a steel material or iron powder disposed in the processing tank. Thus, impurities in open areas of crystal cells of the metal material are dissolved and removed. Then an indissoluble film composed of anticorrosive rust is formed on the surface of the metal material. Where the metal material is steel or iron powder, the anticorrosive rust primarily comprises triiron tetroxide (Fe.sub.3 O.sub.4).

Abstract: A method and an apparatus for depositing an inorganic phosphate coating on a metal substrate includes providing a first composition in a first bath having a high water and a high alcohol content and providing a second composition in a second bath having a low alcohol content positioned in proximity to the first bath so that vapors from the second bath are commingled with vapors from the first bath and the alcohol content of the second bath being such that the commingled vapors have an alcohol content that is not flammable.