Composite article and method

摘要

A method and a product made through it by utilizing Zirconium alloys containing Titanium in the manufacture of metal articles of sports, night stealth compatible articles for law enforcement and military equipment, night-stealth personal and body adornments for members of such forces, garden and household implements, fashion accessories, body art articles, and medical and dental implants, and other articles. The articles benefit from any combination of properties from being hypo-allergenic, possessing high tensile strength, abrasion resistance, and hardness, having low ductility and elasticity and of having the outer appearance within the scale of dark grey to blackness. In this method an alloy of components in their respective ratios from within the method's stipulated preferred range is shaped into a workpiece by conventional metal forming devices and methods, and then subjected to an oxidation process and optional quenching steps. The oxidation is achieved through heating the workpiece that is made out in the alloy in oxygen containing atmospheric ambience in one or two cycles.

主权项

1. A method for making a metallic article, the method comprising the steps of:
producing a binary alloy consisting of zirconium and titanium, the binary alloy having between about 18.4% to about 65.6% of zirconium by atomic weight and titanium; forming the binary zirconium and titanium alloy into a desired shape to form a metallic article; creating a protective darkened color oxide layer containing zirconium oxide, the darkened color oxide layer is formed on the surface of the metallic article by: heating the body in an oxygen containing atmosphere supplied at a controlled flow rate at a heating temperature of between about 250 and about 880° C. and for a duration of between about 10 to about 110 minutes; wherein the darkened color oxide layer is on a monochromatic color scale of dark gray to black; wherein the metallic article has a hardened and abrasion resistant surface; wherein when the heating temperature is between about 480° C. and about 880° C. and the duration is between about 10 and about 70 minutes, the protective darkened color oxide layer has a black color; wherein when the heating temperature is between about 250° C. and about 480° C. and the duration time is between about 25 and about 70 minutes, the protective darkened color oxide layer has a gray color; the metallic article has a polished satin or matte finish.