How to improve the service life of electroless nickel plating of vacuum electroplating electric heating tube?

How to improve the service life of electroless nickel plating of vacuum electroplating electric heating tube?

 

The service life of electroless nickel plating is mainly related to its function and maintenance. The function cannot be changed, but the maintenance is artificial. If we carelessly maintain it, its lifespan will be shorter and shorter, and even if it is broken, the reason cannot be found. On the contrary, if you maintain the electroless nickel plating Well, it will add to its lifespan.

 

Regarding the maintenance of electroless nickel plating, in fact, we don’t need to spend too much energy, nor how long you need to spend, you only need to understand its maintenance knowledge and carry it out properly. In the long run, electroless nickel plating will will get better. We need waterproof, moisture-proof, and timely sorting of stolen goods. To do this, we believe that there will not be too many problems with electroless nickel plating. After all, we need careful maintenance.

What is the role of electroless nickel plating for vacuum electroplating electric heating tubes in PCB manufacturing?

 

Electroless nickel plating is a method of obtaining metal alloys on the plated parts with catalytic surfaces by using the oxidation recovery reaction without electricity. It is a new technology developed recently.

 

Electroless nickel plating refers to a method of depositing a layer of nickel on the surface of metal parts by oxidation recovery without external current. Used to improve corrosion and abrasion resistance, add luster and beauty. Bright nickel plating suitable for small tubular or irregularly shaped parts without further polishing.

 

Generally, the parts to be plated are immersed in a mixed solution of nickel sulfate, sodium dihydrogen hypophosphite, sodium acetate and boric acid, which changes under a certain acidity and temperature, and the nickel ions in the solution are recovered by sodium dihydrogen hypophosphite. It is deposited on the surface of the workpiece for atoms to form a detailed and bright nickel coating. Steel parts can be nickel plated directly. Tin, copper and copper alloy parts should first touch the surface with aluminum sheet - 3 minutes to speed up electroless nickel plating.

 

Nickel is a moderately strong restorer.

 

Nickel is insoluble in water, and forms a fine oxide film on the surface in humid air at room temperature, which can prevent the continuous oxidation of the body metal.

 

It dissolves slowly in dilute acid and does not react to oxidant solutions including nitric acid.

 

Nickel is etched very slowly by nickel hydrochloric acid, sulfuric acid, organic acid and alkaline solution. Nickel dissolves slowly in dilute nitric acid. Fuming nitric acid can passivate the surface of nickel and has corrosion resistance.

 

Therefore, electroless nickel plating uses nickel as the coating, which can further improve the corrosion resistance of the PCB.

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