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Metallized Finishes

Metallized Finishes. Mark Gutman Mark Scabilloni Chad Fuhrman. Purpose/Objective. Make lightweight “stylish” plastic parts Has the appearance of metal Reflective capabilities. Presentation Contents. Electroless plating Metal-spraying Sputtering Vacuum Metallizing. Introduction.

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Metallized Finishes

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  1. Metallized Finishes Mark Gutman Mark Scabilloni Chad Fuhrman

  2. Purpose/Objective • Make lightweight “stylish” plastic parts • Has the appearance of metal • Reflective capabilities

  3. Presentation Contents • Electroless plating • Metal-spraying • Sputtering • Vacuum Metallizing

  4. Introduction • Metallized Finishes • Thin Coat of Metal • Applied to non-metallic surface • Chemical Deposition • Exposing surface to vaporized metal

  5. Electroless Plating • Applications • Automotive/decorative • Types • Nickel • Copper • Silver

  6. Electroless Plating Cont’d. • Applied to surface • A line of baths and tanks • Advantages • Very thin : .25 - .50 micrometers • High production volume • Shiny surface finish

  7. Electroless Plating Cont’d. • Disadvantages • Porous surface finish • Premature corrosion • Limited flexibility

  8. Metal-spraying • Applications • Radio-frequency-interference (rfi) shielding • Types • Zinc • Aluminum • Copper

  9. Metal-spraying Cont’d. • Two Methods • Flame • ARC • Applied to surface • Sprayer head • Metal wire • Electrical contacts • Compressed air • Flammable gas orifices (Flame)

  10. Metal-spraying Cont’d. • Advantages • Protects against corrosion • Inexpensive equipment and materials • Easily applied to inside surfaces • Disadvantages • Manpower Expensive • Lower density than other coatings • Slow process

  11. Sputtering • Applications • Semi-conductors • Insulators • Silicon wafers • Types • Unlimited Materials

  12. Sputtering Cont’d. • Applied to surface • Utilizes energetic particle bombardment • Atoms collide with target • Advantages • Adaptable to hybrid processes • Material selection • Inexpensive equipment • Disadvantages • Stresses can develop within coating

  13. Vacuum Metallizing • Applications • Decorative • Types • Primarily aluminum • Applied to: Styrene, ABS, and Acrylic resins

  14. Vacuum Metallizing Cont’d. • Applied to surface • Basecoat applied • Vacuum pumps evaporate aluminum • Top coat applied • Advantages • High luster finish • Greater protection than other processes • Disadvantages • Expensive equipment

  15. Conclusions • Advantages of metallized finishes • Metal appearance at the cost of plastic • Lighter than metal parts • Versatility in applications • Disadvantages of metallized finishes • Expensive processes • Complicated processes • Advantages outweigh disadvantages for most applications.

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