| 摘要 |
A metallic composition, such as titanium or stainless steel, is heated to a pre-determined temperature under a shielding atmosphere. The heated metal is then allowed to cool in the presence of a cooling atmosphere of pre-determined composition, notably air. As a result, the surface of the metal acquires a stable, decorative color. The shade of the color is determined by the temperature of the metal when it is exposed to the cooling atmosphere. This temperature is indicated indirectly by the characteristic color of the metal being treated at particular temperatures. The tone of the color is determined by the compositions of the shielding and cooling atmospheres. Glaze is imparted to the colored surface by heating the surface of the metal during treatment to above its melting point prior to adjusting the temperature of the metal to its treatment temperature.
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