IT1118024B - Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint - Google Patents

Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint

Info

Publication number
IT1118024B
IT1118024B IT2167077A IT2167077A IT1118024B IT 1118024 B IT1118024 B IT 1118024B IT 2167077 A IT2167077 A IT 2167077A IT 2167077 A IT2167077 A IT 2167077A IT 1118024 B IT1118024 B IT 1118024B
Authority
IT
Italy
Prior art keywords
alloy
paint
aluminium
corrosion
protective coating
Prior art date
Application number
IT2167077A
Other languages
Italian (it)
Original Assignee
Metallgesellschaft Ag
Parker Ste Continentale
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft Ag, Parker Ste Continentale filed Critical Metallgesellschaft Ag
Priority to IT2167077A priority Critical patent/IT1118024B/en
Application granted granted Critical
Publication of IT1118024B publication Critical patent/IT1118024B/en

Links

Abstract

The process comprises treating the surface of Al (alloy) with an alkaline soln. having pH >10 and contg. Ti ion and complexing agent, washing with water, and then treating with an acidic soln. contg. tannine or tannic acid as the main component. In an example Al alloy plate was spray with an alkaline soln. contg. NaOH of 7 g/l, 40% Ti sulphate soln of 1 g/l and Na gluconate of 1-8 g/l at 65/C for 6 sec. washed with water, spray with an acidic soln. contg. tannic acid of 50 g l at 55 degrees C ofr l sec. washed with water, and then dried.
IT2167077A 1977-03-25 1977-03-25 Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint IT1118024B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2167077A IT1118024B (en) 1977-03-25 1977-03-25 Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2167077A IT1118024B (en) 1977-03-25 1977-03-25 Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint

Publications (1)

Publication Number Publication Date
IT1118024B true IT1118024B (en) 1986-02-24

Family

ID=11185133

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2167077A IT1118024B (en) 1977-03-25 1977-03-25 Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint

Country Status (1)

Country Link
IT (1) IT1118024B (en)

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