Nickel plated as alternative for zinc phosphate.. 5

[dimebag08]

Hi Guys!

Would like to seek your advice on what are the properties and differences of this two plating Nickel plated and Zinc phosphate.

Thanks...

 

[CoryPad]

Nickel plating is a high performance coating usually used for long-term wear resistance. Zinc phosphate is a low performance coating usually used as a primer to improve paint adhesion. The cost difference between the two is huge. These two surface treatments usually do not compete for the same applications.

 

[dimebag08]

Thanks CoryPad for sharing your knowledge.
Is there any sites where I can look for material properties/tables for comparison of these two?
My supplier proposed to used nickel plating instead of zincphosphate I think it would support my explanation if I can show him differences of the two since I'm not familiar of its material properties.
By the way it will be applied to shafts with 5-7mm dia. and 100-140mm length.

 

[tbuelna]

There are two basic types of nickel plating- bright nickel and electroless nickel. Zinc or manganese phosphate are conversion coatings. Either type of nickel plating will provide excellent corrosion protection, but zinc/manganese phosphate coatings do not provide much corrosion protection. Zn/Mn phosphate are very inexpensive processes and are readily adaptable with high production rates. Bright nickel is a bit less expensive than electroless nickel, but electroless nickel has the desirable characteristic of providing a very uniform coating thickness on the substrate surface, which is critical for many engineering applications.

For the application described in the last post, I would estimate that electroless nickel could easily cost 30x more per part vs zinc phosphate.

 

[CoryPad]

Check Henkel and Chemetall for information regarding zinc phosphate.

Check MacDermid and Enthone for information regarding nickel plating.

 

[dgallup]

You can find a lot of useful general info at

http://www.pfonline.com/zones/plate/

There are a wide variety of both zinc phosphate and nickel plating products. Without knowing anything about your application there is no way to make a recommendation.

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