Hi Guys,
I have a system where I use some Al parts, and sometimes I get a white powder that seems to be Al2O3. This powder is not distributed uniformly, and it is a very thin layer. The problem that we have is that by looking at it you cannot quantify the amount of powder on these parts. Some of my colleagues say this part looks better than the other one, other say the opposite.
I would like to find a way to quantify the amount of powder. These parts are not disposable, so I cannot cut them or sent them out for analysis.
I am more of an optical guy, I am thinking of using an optical method, such as reflectivity or a similar method to measure the thickness/density of the powder, but if you have other ideas in mind please let me know.
Thanks chibitul p.s. if there is a better newsgroup, please let me know