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- Plating Team #2
- Tin Plating, Tin-Lead Alloy Plating
Tin Plating- - It is used to enhance soldering performance, corrosion resistance, adhesion prevention, sliding and lubricity.
- - Types of plating bath in use include sulfuric acid bath, fluoborate bath, sulfonic bath, alkalin bath(tartrate, pyrophosphate), etc.
- Tin-Lead Alloy Plating
- - It is used to enhance soldering performance, acid resistance, sliding and lubricity.
- - It is often called as tin-lead alloy plating, and types of plating bath in use include fluoborate bath, sulfonic bath,etc.,and it allows balanced deposition plating over the bearing surface.
- Feature of Tin Plating
- 1)Tin is soft and highly expandable, where melting point is low with 231.93 Celcius and boiling point is with 2602 Celcius.
- 2)It is silver gray metal with thermal conductivity is one third of silver, and the electricity conductivity is 1/7 to that of silver.
- 3)Tin is less harmful to human organs; for this it is used in making dishes or plating them. Also, it can be used for plating inner surface of cans due to strong organic acid resistance.
- 4)It excels in solding performance, therefore is widely used in electronic/electric goods.
- 5)Tin plating on Fe substrate, unlike zinc plating, progresses corrosion quickly, due to substrate becoming positive node; therefore undercoating is required.
- 6)It enhances lubricity and operability by electro tin plating over engine driving parts, pistons, etc.
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