Alodine 5200 5700 NonChrome Conversion Coating

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Alodine 5200 / 5700 Non-Chrome
Conversion Coating

• Henkel Aerospace
• Surface Treatment Division
  2004 Aerospace Coatings Removal
  Coatings Forum
• May 10-12, 2004

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Alodine 5200 / 5700 Non-chrome Technology
Conversion Coating Process Considerations

• Finishing Rules
• Never paint raw metal always paint or bond
  over cleaned/conversion coated surfaces.
• Always consider the total process capabilities
• Metals/alloys/conversion coating/paint performance

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Alodine 5200 / 5700 Non-chrome Technology
Conversion Coating

• Why is a Conversion Coating Needed
• Stabilizes metal surfaces against corrosion
• Inhibits corrosion spread
• Improves bonding of paints and adhesives
• Thermal expansion properties somewhere between
  paints
• and metals

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Alodine 5200 / 5700 Non-chrome Technology
Process Considerations

• Performance Requirements
• Adhesion
• Corrosion resistance
• Service environment
• Service life
• Future processing
• Safety (chemical and applications of chemicals)
• Environmental concerns
• Compatibility with disposal systems
• Special circumstances (field repair)
• Overall costs

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Solution Chemistry
Alodine 5200 / 5700 Non-chrome Technology

• Inorganic Component
• H2 Ti F6 Zr O (OH) (CO3)0.5 SiO2
• 40 50C
• Oxyfluoro species of titanium, zirconium
  and silicon
• Organic Component
• Mannich Adduct of Poly-4-vinylphenol, and amines

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Alodine 5200 / 5700 Non-chrome Technology

• Alodine 5200/5700 Performance
• Coating offers excellent adhesion properties
  for paint and adhesives
• Coating is visible and measurable via
  porta-spec
• Coating with paints offers excellent corrosion
  resistance
• Coating does not degrade with age or heat
• Coating is compatible with all paint systems
• Coating weights of light to heavy perform well

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Alodine 5200 / 5700 Non-chrome Technology

• Alodine 5700
• Formulated for plant repairs or field repair
  applications
• Formulated for spray, immersion, and touch up
  applications
• Formulated to be applied as received requires
  zero adjustments
• Formulated for use on aluminum, magnesium,
  titanium
• Does not need to be abraded into the surface
  and has 2 year shelf
• life (no limitations due to a pot life).

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Alodine 5200 / 5700 Non-chrome Technology
Alodine 5700 Cycle for Aircraft Repainting
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Alodine 5200 / 5700 Non-chrome Technology

• Alodine Non-chrome Application Procedure
• Pre-wet surface and check for a
  water-break-free condition
• Thoroughly wet surfaces with conversion coating
• Keep wet for prescribed time
• Thorough rinse
• Let dry for wipe on application

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Alodine 5200 / 5700 Non-chrome Technology
Test Protocol

• Sandwich Corrosion
• Rain Erosion
• 48 hour salt spray (non-painted)
• Filiform corrosion
• Forward and reverse impact
• Condensing humidity
• 3000 hour salt spray
• 6000 hour salt spray
• Wet and dry scribe adhesion
• Minus 90oF paint adhesion

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Alodine 5200 / 5700 Non-chrome Technology
Approved and In use
Northrop Grumman, Palmdale, CA (QFM-0490) Metals
Ti, Cres Alloys, Inconel Application
B2 Purpose Paint Adhesion Adhesive
Bonding Treatment Alodine 5200 3-7
v/v Method Dry-in-Place, Wipe-on
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Alodine 5200 / 5700 Non-chrome Technology
Testing Programs Lockheed Martin Skunk
Works, Palmdale, CA Metal Aluminum Applicatio
n U2 Purpose Paint Adhesion Replacement
for Alodine 1200S Treatment Alodine
5700 Method Rinsable
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Alodine 5200 / 5700 Non-chrome Technology
Approved and In use
NASA United Space Alliance, Kennedy Space
Center Metal Aluminum (2219) Application
Solid Rocket Boosters Purpose Paint
Adhesion Treatment Alodine 5200 at 3 v/v
and 5700 Method Immersion Rinsable
Spray/Rinsable
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Alodine 5200 / 5700 Non-chrome Technology

• In Chrome Program
• Metal Aluminum (2024 Clad)
• Application Spray
• Purpose Paint Adhesion (replacement for
  chromate)
• Treatment Alodine 5700 on commercial new
  deliveries
• Method - Rinsable

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Alodine 5200 / 5700 Non-chrome Technology

• Approved and In Use
• Commercial Airline Maintenance Depots
• Application Spray
• Purpose Paint Adhesion and corrosion resistance
  improvements
• Treatment Alodine 5700
• Method - Rinsable

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Alodine 5700 Application on Commercial Aircraft
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Alodine 5200 / 5700 Non-chrome Technology
Approvals
Boeing BAC 5861 Coatings for Titanium Alloys-PSD
9-33 Metal Ti Application
Immersion Purpose Paint Adhesion (replacement
for Phosphate Fluoride) Treatment Alodine
5200 at 1 v/v Method Dry-in-Place
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Alodine 5200 / 5700 Non-chrome Technology
Non-Chrome Application
U.S. Federal Spec. TT-C-490E Metal
Aluminum Purpose Paint Adhesion Treatment
Alodine 5200/5700 Method Spray/Rinsable Only
Non-Chrome approved conversion coating on this
spec!!