Phosphate treatment solution for composite structures and method

Details Phosphate treatment solution for composite structures and method Phosphate treatment solution for composite structures and method

1990-01-30

1993-04-06

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C23C 2236

Patent

active

052000001

ABSTRACT:
A phosphate treatment solution for composite structures which is here disclosed is characterized by containing 0.3-2.0 g/l of zinc ions, 0.3-4.0 g/l of nickel ions, 0.3-2.0 g/l of manganese ions, 3-10 g/l of sodium ions, 0.1-10 g/l of potassium ions, 5.0-25.0 g/l of phosphate ions, 0.1-20 g/l of total fluorine ions, 4.0 g/l or more of nitrate ions and 0.01-1.0 g/l of nitrite ions as main components, the aforesaid treatment solution having a pH of 2.0-3.5.

REFERENCES:
patent: 2500673 (1950-03-01), Gibson
patent: 3619300 (1968-11-01), Heller
patent: 4961769 (1985-05-01), Miyamoto et al.

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