 Porous metal composite body |
| We claim: 1. A method of making a porous Gp VIII metal composite body, comprising: metallising a ... |
|
| Physical vapor deposition of titanium nitride on a nonconductive substrate |
| Briefly, according to this invention, there is provided a process of physical vapor deposition of a ... |
|
| Surfacing of aluminum bodies by anodic spark deposition |
| An object of the present invention is to satisfy this need by subjecting an aluminum or aluminum ... |
|
| Agent for the removal of low molecular weight organic gases |
| What is claimed is: 1. A process for removal of a low molecular weight organic gas selected from ... |
|
| Metal assisted carbon cold storage of hydrogen |
| Accordingly, it is an object of this invention to provide storage of hydrogen in a high surface ... |
|
| Carbon molecular sieves for purification of chlorofluorocarbons |
| I claim: 1. A process for the removal of hydrofluoric and hydrochloric acids from ... |
|
| Modified carbon molecular sieve adsorbents |
| He have found that kinetically oxygen-selective adsorbents can be prepared from a variety of porous ... |
|
| Use of helium and argon diluent gases in modification of carbon molecular sieves |
| OF THE INVENTION Air separation can be effected over carbon molecular sieve adsorbents which ... |
|
|
Article having a coating simulating brass
| Details |
Inventors: Moysan, III, Stephen R.; Sugg, Rolin W.;
Assignee: Baldwin Hardware Corporation (Reading, PA)
Primary Examiner: Lewis; Michael
Assistant Examiner: Nguyen; N. M.
Attorney, Agent or Firm: Kapustij; Myron B., Sutherland; Malcolm L., Redman; Leon E.
An article is coated with a multilayer coating comprising a nickel-tungsten-boron alloy layer deposited on the surface of the article, a refractory metal, preferably zirconium, strike layer deposited on the nickel-tungsten-boron alloy layer, and a refractory metal compound, preferably zirconium nitride, deposited on the refractory metal strike layer. The coating provides the color of polished brass to the article and also provides abrasion protection. |
|
DETAILED DESCRIPTION The present invention is directed to a metallic substrate having a multi-layer coating disposed or deposited on its surface.
More particularly, it is directed to a metallic substrate, particularly brass, having deposited on its surface multiple superposed metallic layers of certain specific types of metals or metal compounds.
The coating is decorative and also provides wear and abrasion resistance.
The coating provides the appearance of polished brass.
Thus, an article surface having the coating thereon simulates a polished brass surface.
A first layer deposited directly on the surface of the substrate is comprised of nickel-tungsten-boron alloy.
Over the nickel-tungsten-boron alloy layer is a layer comprised of a non-precious refractory metal such as zirconium, titanium, hafnium or tantalum, preferably zirconium or titanium.
A top layer comprised of a nonprecious refractory metal compound, preferably a zirconium compound, titanium compound, hafnium compound or tantalum compound, more preferably a titanium compound or a zirconium compound such as zirconium nitride, is disposed over the refractory metal layer, preferably zirconium layer.
The nickel-tungsten-boron alloy layer is applied by electroplating.
The refractory metal such as zirconium and refractory metal compound such as zirconium compound layers are applied by vapor deposition such as sputter ion deposition and reactive sputter ion deposition.
|
|
Radio 
