Home> Industry Information> Acid galvanized nickel alloy: coating after passivation

Acid galvanized nickel alloy: coating after passivation

December 24, 2018

Corrosion resistance test is as follows

(1) Experimental method

1 plating A3 steel plate from the alkaline plating solution containing nickel l% ~ l5%

2 Passivation paint The plating is passivated or phosphatized by chromate and dip coated with acrylic varnish, polyurethane varnish and amino baking paint, respectively.

3 Corrosion test:

a. The impregnation with 5% NaCl aqueous solution was used to measure the change of electrode surface potential and soaking time.

b. The test piece was hung in the 600mm position above the 40% hydrochloric acid tank, and the relative humidity was 80%. The change was observed by the acid mist corrosion.

c. Potentiodynamic scanning (1 mV/s) was used to measure the anodic polarization curve in 5% sodium chloride solution after painting of different coatings.

(2) Test results

1 After coating the film with the same conditions, the corrosion resistance of the zinc-Nickel alloy coating containing 10% to 15% of nickel is superior to that of the nickel-containing zinc Nickel Alloy coating containing 1% to 3% of nickel.

2 In a 5% sodium chloride solution, the passivated and painted coating is more stable than the phosphatized and painted coating.

3 The ability of resistance to hydrochloric acid mist, passivated zinc-nickel alloy coating is stronger than the phosphating treatment.

4 Nickel-nickel alloys containing 10% to 15% nickel in a wide range of passivation potentials under anodic polarization conditions.

5 In the 5% sodium chloride solution, the paint film first peeled off, and then the plating corrosion occurred.

The above is the Acid galvanized nickel alloy: coating after passivation we have listed for you. You can submit the following form to obtain more industry information we provide for you.

You can visit our website or contact us, and we will provide the latest consultation and solutions

Share to:

Send Inquiry

Home> Industry Information> Acid galvanized nickel alloy: coating after passivation
Related Products List

Home

Product

Whatsapp

About Us

Inquiry

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send