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Anonymous users2024-02-121. Identification method by fire 1, there is no change into real gold jewelry through fire. 2. The color will change through fire, or the color is not as bright as before for gold-plated jewelry. 2. Listen to the sound identification method 1, the sound of hitting the jewelry is relatively dull for real gold jewelry.
2. The sound of hitting the jewelry sounds relatively crisp for gold-plated jewelry. 3. Look at the hardness of ** 1, the jewelry material will generally be relatively soft for real gold jewelry. 2. The jewelry is very hard and is gold-plated jewelry.
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Anonymous users2024-02-11Gold plating is not a type of real gold.
There are two types of gold plating, one is gold plating of homogeneous materials, and the other is gold plating of heterogeneous materials. Homogeneous material gold plating refers to the gold plating of the surface of ** jewelry. Its significance is to improve the brightness and color of jewelry.
Heterogeneous material gold plating refers to the gold plating treatment on the surface of non-** materials, such as silver gold plating, copper gold plating. Its significance is to replace the color of the plated material with the luster of the first, so as to improve the ornamental effect of the jewelry.
Features of gold plating:
The appearance of the gold plating layer is golden yellow, with high chemical stability, only soluble in aqua regia and other super acids, insoluble in other acids. The atomic valence of gold is monovalent and trivalent. The standard potential of monovalent gold °au+ au is +, and the standard potential of trivalent gold °au3+ au is +.
For steel, copper, silver and their alloy matrices, the gold coating is a cathopolar coating, and the porosity of the coating affects its protective performance.
The gold plating layer has good ductility, easy polishing, high temperature resistance, and good discoloration resistance. Gold plating on a silver layer prevents discoloration of silver; Gold alloy plating can take on a variety of shades, so it is often used as a decorative coating, such as plated jewelry, watch parts, artwork, etc.
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Anonymous users2024-02-10Real gold plating means that the material attached to the workpiece is real gold, which is achieved through the electroplating process.
The plating is real gold (18k real gold or 24k real gold). When we talk about electroplating gold, we mean electroplating gold. Only real gold plating refers to the real **.
Electroplating requires a low-voltage, high-current power supply that supplies power to the plating bath and an electrolysis device consisting of an electroplating solution, a part to be plated (cathode), and an anode.
The composition of the electroplating solution varies depending on the coating, but it contains the main salt that provides metal ions, the complexing agent that can complex the metal ions in the main salt to form complexes, the buffer used to stabilize the pH of the solution, the anodic activator and special additives (such as brighteners, grain refiners, leveling agents, wetting agents, stress relieving agents and fog inhibitors, etc.).
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