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In time management, gold plating is the phenomenon of working on a project or task past the point of diminishing returns.. For example, after having met a project's requirements, the manager or the developer works on further enhancing the product, thinking that the customer will be delighted to see additional or more polished features, beyond that which what was asked for or expected.
The gold is typically applied by quick immersion in a solution containing gold salts. Some of the nickel is oxidized to Ni 2+ while the gold is reduced to metallic state. A variant of this process adds a thin layer of electroless palladium over the nickel, a process known by the acronym ENEPIG. [1]
The thickness of gold plating on jewellery is noted in microns (or micro-meters). The microns of thickness determines how long the gold plating lasts with usage. The jewellery industry denotes different qualities of gold plating in the following terminology Gold flashed / Gold washed - gold layer thickness less than 0.5 micron
Electroplating of acid gold on underlying copper- or nickel-plated circuits reduces contact resistance as well as surface hardness. Copper-plated areas of mild steel act as a mask if case-hardening of such areas are not desired. Tin-plated steel is chromium-plated to prevent dulling of the surface due to oxidation of tin.
Black nickel plating was developed around 1905, and between the two wars, black chrome plating (first German patent 1929.GP 607, 420), which saw wider use only from the mid-1950s. [14] After the First World War, the first procedures for anodic oxidation and coloring of anodically oxidized aluminium were developed (1923, 1924.DRP. 413876).
Fire-gilding or wash-gilding is a process by which an amalgam of gold is applied to metallic surfaces, the mercury being subsequently volatilized, leaving a film of gold or an amalgam containing 13 to 16% mercury. In the preparation of the amalgam, the gold must first be reduced to thin plates or grains, which are heated red-hot, and thrown ...
Still from the instructional video "Creating a Mirror on Glass: Silver & Gold" Angel gilding is gilding glass or gold plating by electroless chemical deposition. Gold chloride is dissolved in water, mixed with other chemicals and poured on clean glass that has been treated with stannous chloride. [1] The gold layer is delicate and usually ...
Chemical coloring of metals is the process of changing the color of metal surfaces with different chemical solutions. The chemical coloring of metals can be split into three types: electroplating – coating the metal surface with another metal using electrolysis. patination – chemically reacting the metal surface to form a colored oxide or ...