Laser alloying allows you to improve the corrosion and wear resistance of a metal or alloy surface by blasting it with microparticles of another metal, subsequently changing the material's microstructural and chemical properties. Its advantages include precision and a short processing time. Laser alloying uses high-density metal powders, aimed by concentrated laser beams, to melt the surface of a metal and a portion of the underlying substrate, allowing the metal powder to stick to the surface of the material you are treating. When treated with a laser beam, the substrate can act as a "heat sink" to prevent the surface from overheating.
- Powder feeder connected to laser beam
- Gas feeder
- Argon shielding gas
- Metal powder used for alloying
- Material to alloy
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Instructions
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1
Clean the metal surface by blasting it with sand.
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2
Dry the metal powder you will use to blast the material surface in an oven at 70 degrees Celsius for three hours to remove any water it has adsorbed.
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3
Blow argon gas continually over the sample surface to avoid oxidization of the melted surface. Use the laser to continually feed metal powder to the surface of the metal you are treating.