What is the active ingredient of chemical silver plating

Chemical silver plating, can also be said to be the silver mirror reaction, its final result can be many ways, the way here is the difference in the conditions and processes, but from a commercial point of view, how to make a small amount of silver do the maximum effective area is the focus of many business research,,, that is, the reduction efficiency of silver,,。

Personally, I think that glucose as a reducing solution is relatively simple, and it can also be purchased at will, according to the operation can be divided into leaching and spraying reactions, that is, the reduction speed can be adjusted between fast and slow, of course, this involves the concentration and proportion of the liquid medicine and operating conditions, so there is no specific concentration ratio of the silver mirror reaction, and its application in various industries is different, such as hydrinestones, mirror glass, and now nano spraying, etc., are different concentration combinations, if you have any targeted problems, Ask again.

Chemical silver plating method: This method is to dissolve silver nitrate in water, add ammonia and sodium hydroxide solution and dilute it into silver hydroxide ammonia double salt to make silver plating solution. Invert sugar or formaldehyde, potassium sodium tartrate solution as the reducing solution.

After the glass is cut, edging (grinding and polishing if necessary), and the surface is washed, it is sensitized with a dilute solution of stannous chloride, then washed, and then mixed with silver plating solution and reducing solution to immediately immerse the surface, and the mirror surface is washed after it is formed, and then it can be plated with copper and coated with protective paint.

Sterling silver gilded means that the inside is pure silver, and the exterior is plated with a layer of gold, but it does not last and will wear off after a few months.

Silver gold plating refers to the gold coating on the metal base or silver-plated material, which is applied to the metal surface with transparent red and orange-red paint in the manufacturing process, and also refers to the paint with silver gold plating, which was the main gold plating method in the 19th century, and is now rarely used. Fire gilding of the 17th-18th centuries. A lighter vermilion color than cinnabar.

Sometimes it is gracefully described as a color like cinnabar.

Advantages of electroplating gold:

1. The gold-plated products and ornaments are firm and not easy to fall off. The gold-plated layer has the effect of anti-corrosion, wear-resistant, and high-temperature, and the golden yellow luster is very beautiful.

2. The white luster of electroplated gold jewelry is natural and pure, giving gold jewelry a unique appearance. Even when worn every day, gold always leaves a pure white sheen.

3. The nature of electroplated gold jewelry is very stable, and it will not deteriorate or fade due to daily wear, and its luster is always the same. It will not be affected by contact with common acids such as sulfur, bleach, chlorine from swimming pools, and sweat, so you can wear gold jewelry at any time.

Silver plating is a white metalDensity (20), melting point , relative atomic mass, standard electrode potential ag ag is +. Silver is malleable, malleable, and has excellent electrical and thermal conductivity. The polished silver layer is highly reflective and decorative.

Silver plating was first applied to decoration. In the electronics industry, communication equipment and instrumentation manufacturing industry, silver plating is widely used to reduce the contact resistance on the surface of metal parts and improve the welding ability of metal.

Silver-plated method:Graphite electroless silver plating: Electroless silver plating solution is composed of silver salts and reducing agents, etc., and the following reactions usually occur in the process of electroless plating of graphite

r-cho+2ag(nh3)2+ 2ohˉ→r-coonh4+2ag↓+3nh3+h2。Graphite powder is used as a conductive material after silver plating (or nickel plating), which not only has low density, but also excellent conductivity and low production cost.

The above content reference: Encyclopedia - electroplating silver.

Summary. Depending on the chemical properties of silver, silver readily reacts with sulfur and hydrogen sulfide to form black silver sulfide. Silver reacts with oxygen at high temperatures to produce brownish-black silver oxide (at room temperature, but slowly).

Looking at the reaction chemical formula of silver with hydrogen sulfide and oxygen, 4AG+2H2S+O2===2AG2S+2H2O (at room temperature, the principle of silver deterioration and blackening). Depending on the chemical properties of the silver, the blackening can be treated with some sulfide or high-temperature oxygenation.

Depending on the chemical properties of silver, silver readily reacts with sulfur and hydrogen sulfide to form black silver sulfide. Silver reacts with oxygen at high temperatures to produce brownish-black silver oxide (at room temperature, but slowly). Looking at the reaction chemical formula of silver with hydrogen sulfide and oxygen, 4AG+2H2S+O2===2AG2S+2H2O (at room temperature, the principle of silver deterioration and blackening).

Depending on the chemical properties of the silver, the blackening can be treated with some sulfide or high-temperature oxygenation.

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The structure of the silver plating is a song of Ming reform: plating (left and right structure) silver (left and right structure).

The structure of silver plating is: plating (left and right structure) silver (left and right structure). Pinyin is: dùyín. The phonetic pronunciation is: 一 . The part of speech is: adjective.

What is the specific explanation of silver plating, we will introduce it to you through the following aspects:

1. Explanation of words [point to excite Zheng to view the details of the plan].

Silver-plated dùyín. (1) Plating with silver.

2. Network Explanation.

Carbon disulfide, the first brightener used for silver plating, was proposed in a patent published in 1847 by Milword and Lyons, and is still in use today, with only minor changes. Silver plating is much cheaper than gold plating, and has high electrical conductivity, light reflectivity and chemical stability to organic acids and alkalis, so the use area is much wider. In the early days, it was mainly used for decorations and tableware, but recently it has been used more and more in aircraft and electronics.

Poems about silver plating.

It is commonly said that domestic university graduates are silver-plated black night crying

Words about silver plating.

silver

Idioms about silver plating.

Silver screen, gold house, silver mountain, iron wall, gold drowning, silver iron painting, silver hook, real gold, not silver-plated, hook tail, silver sea flowers.

Words about silver plating.

Real gold, not silver-plated, hooks, jade spit, iron paintings, silver hooks, silver hooks, tails, silver seas, flowers, purple waists, silver saliva, jade hooks, silver jade trees, silver flowers, jade rabbits, silver toads, silver screens, gold houses.

Sentence formation about silver plating.

1. The gift box is handmade by five young men from Tianjin who have just graduated from university, containing two bottles of soda, and a special silver-plated card is engraved with the inscription of Mr. Song Kai, general manager of Shanhaiguan Company.

2. The reasons for the discoloration of the gold plating and silver plating layers of the connectors are respectively.

3. Introduce a full set of practical processes for bright silver plating of tableware, including chemical polishing, mechanical polishing, wax removal, degreasing, nickel plating, silver plating, and post-plating treatment.

4. In terms of production technology and appearance, the craftsmanship produced by the top tablet company at that time was extremely exquisite, and all the handicaps were silver-plated, the film base was thick, and the program cover design was very artistic.

5. He re-silvered this old silver vessel.