United Protective Technologies, LLC
RAM VI
15 October 2013
Wear Resistant Carbon
Coating Technologies
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UPT Research
SP3ECTM Coating
EVIAC Whirling Arm Facility
Analytical and Testing Services
Specialty Coating Development
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Testing and Development
• Approach
– Focus on Understanding Failure Modes
– Creative Solutions
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Currently Available
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New Designs
Mature Developed Solutions into Viable Products
• Multi-Discipline Staff
– Mechanical, Electrical, Metallurgical, Chemical and Materials
Engineers
– Six Sigma Trained Team
6σ
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Why Thin Films?
• Thickness typically below
design tolerances
• Control interface properties
• Improve specific material or
interface attributes
• Thin films do not change bulk
properties
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SP3EC™ Coating Technology
Carbon Based Films
•Diamond-Like-Carbon Family
•Thin Film Coating (150nm-12μ)
•Dense, Multi-Layer Configurations
•Nanocrystalline Diamond(ta-C) to Amorphous
Carbon (a-C:H) Matrix
•Extreme Wear Durability
•Excellent Tribological Properties
•Low Temperature PACVD Process
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Coating Adhesion Testing
•ASTM C1624
•Defines
Cohesion/Adhesion
•Quantifies Durability
•Quality Control
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Coating Adhesion Evaluation
• Revetest
– ASTM C1624
– Progressive Load
– Constant Load
• VDI 3198
– Rockwell Indent
Adhesion Criteria:
• Delamination
• Spalling
• Crack Pattern
• Toughness
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Wear Testing
Ball on Disk ASTM G99
Load
Optional
Lubricant
Steel
Ball
Steel
Disk
Rotate
Areas of Contact During Test
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ASTM G99 Testing
Ball on Disk Wear Evaluation
Ball-on-Disk Test Platform
•Loads up to 60 N
• Flexible Static Partners
• Variable Speeds
• Variable Environments
• Lubrication
Outputs/Data
•Dynamic Friction
•Mass Loss
•Disk
•Static Partner
ASTM G99 Test Data (lubricated and dry)
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Linear Wear Testing
ASTM G133
Modified Ball-on-Disk Test Platform
•Loads up to 60 N
• Flexible Static Partners
• Variable Speeds
• Variable Environments
• Lubrication
Outputs/Data
• Static and Dynamic
Friction
•Mass Loss
•Disk
•Static Partner
Self Centering/Fretting Interfaces
Problem – Critical interface does not realign
after vibration and shock cycle. Vibration and
shock deforms spring loaded aluminum
surface. Mating surface (ball) is 17-4 stainless
steel.
ASTM G133 Ball on Flat- Dry Test
Method –
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Bare Surfaces
Coated Aluminum,
Bare 17-4 Ball
Replicate condition in laboratory
Develop and test coatings
Low friction/self lubricating result
Modifies aluminum/steel interface
Near immeasurable wear rates
Increased performance
Coated Surfaces
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Wear Testing
Block on Ring ASTM G77
Steel Block
Aluminum Ring
Test Oil
Contact
Interfaces
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Wiping Seals/Motors
ASTM G-77 Block-on-Ring Testing of SP3EC Coating on 6061
Aluminum vs. Other Internal Engine Component Coatings
Falex Test Parameters
Speed (rpm):
2000
Temperature (ºC):
125
Load (lb):
44 – 60 – 65 - 70
Duration (min):
5 - 5 - 10 - 5
SP3EC™ coating provides protection for both materials in contact
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Discussion
Thank You!
Jordan Larson
jlarson@unitedprotec.com
www.unitedprotec.com
www.tribolab.com
Phone: 877-552-8744