Molybdenum-on-Chromium Dual Coating on Steel
•
2 likes•1,636 views
A presentation on Molybdenum-on-Chromium Dual Coating on Steel made by Deepak Rajput at the Center for Laser Applications, the University of Tennessee Space Institute.
![Molybdenum-on-Chromium Dual Coating on Steel www.utsi.edu Center for Laser Applications University of Tennessee Space Institute 411 B. H. Goethert Parkway Tullahoma, TN 37388 Surface & Coatings Technology (2009), 203 (9), pp 1281-1287 Implementation of fast scanning diode pumped fiber laser to surface modification Deepak Rajput [email_address] / http://drajput.com](https://image.slidesharecdn.com/molybdenumonchromiumdualcoatingonsteel-091218183514-phpapp02/85/Molybdenum-on-Chromium-Dual-Coating-on-Steel-1-320.jpg)
![Molybdenum coating on steel ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Molybdenum-on-Chromium Dual Coating on Steel
Similar to Molybdenum-on-Chromium Dual Coating on Steel (20)
More from Deepak Rajput
More from Deepak Rajput (17)
Recently uploaded
Recently uploaded (20)
Molybdenum-on-Chromium Dual Coating on Steel
- 1. Molybdenum-on-Chromium Dual Coating on Steel www.utsi.edu Center for Laser Applications University of Tennessee Space Institute 411 B. H. Goethert Parkway Tullahoma, TN 37388 Surface & Coatings Technology (2009), 203 (9), pp 1281-1287 Implementation of fast scanning diode pumped fiber laser to surface modification Deepak Rajput [email_address] / http://drajput.com
- 5. Dilution Precursor mixture Substrate Laser beam Pores Capillary action fills up the pores with the molten metal from the substrate
- 6. Dilution Substrate Substrate 1) Composite coating: unmelted precursor particles embedded in the substrate 1 2 T p >> T s T p > T s or not enough Laser power 2) Partial melting of the precursor: coating contains alloy and unmelted particles
- 11. Cr-B phase diagram 1630 o C
- 12. Mo-B phase diagram 2180 o C
- 15. Precursor Deposition Precursor mixture = Metal Powders + Binder Precursor mixture steel air Spray gun
- 16. Laser Deposition Cr* = 165W, 25mm/s, Hatch 0.1mm @ 355mm Mo* = 180W, 25mm/s, Hatch 0.1mm @355mm Steel Cr IML Mo Layer
- 17. Fiber laser processing Scan head Fiber Water-cooled chamber View port Hopper
- 18. Fiber laser results Substrate: AISI 4130 steel
- 19. Fiber laser results Cr* layer at high magnification
- 20. Fiber laser – two coatings
- 21. Fiber laser – two coatings Mo* layer at high magnification
- 22. Cr* coating Microhardness test of chromium layer
- 23. X-ray Cr* layer X-ray diffractogram of chromium layer
- 24. Mo* on Cr* coating Microhardness test of molybdenum coating
- 25. Mo* on Cr* x-rays X-ray diffractogram of molybdenum coating
- 26. Block-on-ring wear tester ASTM G77 (4 lb load)
- 27. Block-on-ring sliding wear Sliding wear performance
- 28. PLINT TE68 Gas Jet Erosion Rig ASTM G76 (silica 2 gm/min at 52 m/s)
- 29. ASTM G76 dry sand erosion wear Solid particle erosion performance