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Anodizing Aluminum and Microstucture of a Steel Sprocket. Ian Buchanan & Kris Magri Santa Rosa Junior College ENGR 45, Younes Ataiiyan Dec 07, 2009. Ian Buchanan is a Civil Engineering major, hoping to work in construction. - PowerPoint PPT Presentation
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Anodizing Aluminum the journey of a less-than-perfect
aluminum sample
Grace Woods and Ryan Abbott SRJC ENGR45 SPRING 2014
Conductors of the Experiment • Grace Woods – Mechanical Engineering major • Ryan Abbott – Mechanical Engineering major
How Anodizing Works
• Stripping (remove current oxide layer) • Replacing (thicker oxide layer) • Sealing (closes pores)
List of Materials
• Aluminum · two sheets · sample wire
• Sulfuric Acid, H2SO4 (20% conc.) • Deionized water • RIT Dye (Purple) • Glass Beakers
· two 600mL · one 1000mL
• Ethanol and Sand paper (cleaning)
• DC Voltage Source · 15V/2A · Banana/Alligator Clips
• Hot plates (2) • Safety Equipment
· Goggles · Apron · Rubber gloves · Common Sense
• Wooden Ruler
Procedure Cathode – Before Sanding & Rinsing with Ethanol
Cathode – After Sanding & Rinsing with Ethanol
Set up
Dye Bath
Sealing
Final Product
Sources of Error
• Current vs. Spacing • Time/Temperature • Dye Bath (too rich)
Resources • Aluminum Anodizers Council
www.anodizing.org/Anodizing/what_is_anodizing.html • Frank J. Hoose Anodizing Aluminum bloghttp://www.mini-
lathe.com/Anodizing/anodizing_aluminum.htm • How to Anodize Aluminum (Caswell Inc.) http://www.youtube.com/watch?v=qr-zd6StOOw • AACOA website http://www.aacoa.com/anodizing/process.htm • How to anodize aluminum (Bill Gilmour) http://www.youtube.com/watch?v=sI-oiBKAyOY • Understanding and Specifying Anodizing: What a Manufacturer Needs to
Know (2Dye4 Inc.) http://www.2dye4inc.com/understandingano/anoindex.html