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Dr. Kuruvilla (Karl) Cherian
Independent Materials Scientist-Consultant
(Diamond and Advanced Materials Processing Technologies)
Home Office: 347 Rose Brier Drive, Rochester Hills, Michigan, USA
Email: kuruvilla.cherian@usa.net, amprayilusa@gmail.com
Excerpts from work in:
Simultaneous Multiple-wavelength and Pulsed Lasers
(SMP-Lasers) Processing R&D - Surface Engineering
Selected Examples
1. Aluminum to Aluminum Nitride Conversion
(Surface Modification)
2. Ophthalmologic Blades
(Surface Treatment for Enhanced Performance)
3. Hot Forging Tooling, Composite TiB2 Cladding
(Surface Reengineering/Remanufacturing)
4. Drills
(Surface Treatment for Enhanced Performance)
Dr. K. Cherian-L1-1&2
Simultaneous Multiple-wavelength and Pulsed Lasers (SMP-
Lasers) Processing R&D: Surface Modification, Surface
Treatments & Surface Reengineering / Remanufacturing for
Enhanced Performance (at QQC, Inc.)
Lasers
CO2 laser (6kW CW)
Nd:YAG laser (50J pulsed or 3kW CW)
Excimer (670mJ pulsed)
Selected Examples:
1. Aluminum to Aluminum Nitride Conversion
(Surface Modification)
SMP-Lasers Surface Modification Treatment;
Aluminum to Aluminum Nitride Conversion for:
 enhanced wear resistance
 erosion resistance and
 corrosion resistance
2. Ophthalmologic Blades, Surface Enhancement
(Surface Treatment for Enhanced Performance
SMP-Lasers treated ophthalmologic blades;
composite metal / nanodiamond with antiglare
treatment for:
 low friction,
 low penetration forces and
 enhanced durability
Treatment thickness ~200 Angstroms
Dr. K. Cherian-L2-3&4
3. Hot Forging Tooling, Cladding
(Surface Reengineering/Remanufacturing)
Composite TiB2 cladding of Hot Forging
Tooling with SMP-Lasers Treatment (for
working temperature in excess of 1400o
C)
Used and worn sample on left, remanufactured on
right.
Advantages:
 Reduction in use of hot forging lubricants
 Elimination of steam erosion
 Elimination of thermal fatigue and cracking
 Reduced hot metal diffusion and erosion
 Enhanced material flow
 ~10x life improvement
4. Drills, Surface Enhancement Treatment
(Surface Treatment for Enhanced Performance)
As received SMP-Laser treated
SMP-Lasers treatment of drills
Grinding marks, burrs, heat treatment defects,
removed with SMP-Laser process – results in:
 enhanced edge-strength
 enhanced lubrication
 enhanced chip removal
 ~15x performance enhancement

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KC-SMPLasersProcessingR&D(SelectedExamples)140603

  • 1. Dr. Kuruvilla (Karl) Cherian Independent Materials Scientist-Consultant (Diamond and Advanced Materials Processing Technologies) Home Office: 347 Rose Brier Drive, Rochester Hills, Michigan, USA Email: kuruvilla.cherian@usa.net, amprayilusa@gmail.com Excerpts from work in: Simultaneous Multiple-wavelength and Pulsed Lasers (SMP-Lasers) Processing R&D - Surface Engineering Selected Examples 1. Aluminum to Aluminum Nitride Conversion (Surface Modification) 2. Ophthalmologic Blades (Surface Treatment for Enhanced Performance) 3. Hot Forging Tooling, Composite TiB2 Cladding (Surface Reengineering/Remanufacturing) 4. Drills (Surface Treatment for Enhanced Performance)
  • 2. Dr. K. Cherian-L1-1&2 Simultaneous Multiple-wavelength and Pulsed Lasers (SMP- Lasers) Processing R&D: Surface Modification, Surface Treatments & Surface Reengineering / Remanufacturing for Enhanced Performance (at QQC, Inc.) Lasers CO2 laser (6kW CW) Nd:YAG laser (50J pulsed or 3kW CW) Excimer (670mJ pulsed) Selected Examples: 1. Aluminum to Aluminum Nitride Conversion (Surface Modification) SMP-Lasers Surface Modification Treatment; Aluminum to Aluminum Nitride Conversion for:  enhanced wear resistance  erosion resistance and  corrosion resistance 2. Ophthalmologic Blades, Surface Enhancement (Surface Treatment for Enhanced Performance SMP-Lasers treated ophthalmologic blades; composite metal / nanodiamond with antiglare treatment for:  low friction,  low penetration forces and  enhanced durability Treatment thickness ~200 Angstroms
  • 3. Dr. K. Cherian-L2-3&4 3. Hot Forging Tooling, Cladding (Surface Reengineering/Remanufacturing) Composite TiB2 cladding of Hot Forging Tooling with SMP-Lasers Treatment (for working temperature in excess of 1400o C) Used and worn sample on left, remanufactured on right. Advantages:  Reduction in use of hot forging lubricants  Elimination of steam erosion  Elimination of thermal fatigue and cracking  Reduced hot metal diffusion and erosion  Enhanced material flow  ~10x life improvement 4. Drills, Surface Enhancement Treatment (Surface Treatment for Enhanced Performance) As received SMP-Laser treated SMP-Lasers treatment of drills Grinding marks, burrs, heat treatment defects, removed with SMP-Laser process – results in:  enhanced edge-strength  enhanced lubrication  enhanced chip removal  ~15x performance enhancement