How to increase the catchment efficiency of the laser cladding diamond powders?

08 April 2019 1 5K Report

I am recently working on laser cladding of diamond coatings. However, when I checked the microstructure, I could barely find the diamond particles in the coating. I think this might be attributed to the low density of diamond. Does anyone have any idea how to mitigate this issue? I already used pretty low laser power and fast scanning speed. The introduction of inter-layer to lower the melting point seems did not have too much improvement.

Equipment: direct diode laser with off-axis powder feeding system.

Dimitar P. Mitev

Hi,

There is a thesis on this, 'Laser sintering of nanodiamond powders on aluminum substrate':

https://lib.dr.iastate.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=1960&context=etd

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