Aluminum Bright Dip
Question: Can you give me a good formulation for an aluminum bright dip?
Question:
Can you give me a good formulation for an aluminum bright dip? S.D.
Answer:
Here is a basic formulation.
Phosphoric acid (85%) |
94% v/v |
Nitric acid (42°Bé) | 6% v/v |
Use at 180-185F.
Another formulation based on the old “Kynalbrite” process has the following formulation:
Phosphoric acid |
78% v/v |
Nitric acid | 11% v/v |
Sulfuric acid | 11% v/v |
Ferrous sulfate | 0.8% oz/gal |
Use at 95-100C. This bright dip generates a lot of fumes and should only be used where good ventilation is available.
Related Content
-
Trivalent Chrome Overview
As the finishing industry begins to move away from the use of hexavalent chromium to trivalent chromium, what factors should finishers consider as they make new investments? Mark Schario, chief technology officer for Columbia Chemical offers a helpful overview of this complicated topic.
-
How to Maximize Nickel Plating Performance
The advantages of boric acid-free nickel plating include allowing manufacturers who utilize nickel plating to keep up the ever-changing regulatory policies and support sustainability efforts.
-
An Overview of Electroless Nickel Plating
By definition, electroless plating is metal deposition by a controlled chemical reaction.