Thread: A quick slurry study

Stefan
I have the white 30k on glass (not the Pro series) and would be honored to contribute some slurry to science. Alx

Stefan
Also in the photos you posted as my label (photo #1) Nakayama was photographed at 2 mircometers as were photos Escher photos #3) & #4).

On the other hand, photo #2) was photographed at (and is labeled as 1um) 1 micrometer which accounts for the particles appearing to be the same size as in photo #1 while in reality, if I am not mistaken they are 1/2 the size as the particles of grit in photo #1. Alx

Originally Posted by alx

Stefan
Also in the photos you posted as my label (photo #1) Nakayama was photographed at 2 mircometers as were photos Escher photos #3) & #4).

On the other hand, photo #2) was photographed at (and is labeled as 1um) 1 micrometer which accounts for the particles appearing to be the same size as in photo #1 while in reality, if I am not mistaken they are 1/2 the size as the particles of grit in photo #1. Alx

Alex this is a scale assigned by the computer, you can estimate particle size by comparing against the scale provided. Even if the scales are different the particle sizes are comparable measured in multiples of the scale size.

Today I was again using the SEM so I smuggled some Shapton 30k (thanks Alex) slurry to take a look at.
I had some issues with adjustments of the image because this bugger is too reflective and I think it sticks out of the substrate plane too much to focus very well. Still one can see the spherical grit and to my eye the particles are indeed in the .5 micron size range.
Both of the pics has Nakayama grit contamination, even though I scrubbed the Atoma plate with a brush pretty thoroughly, but I think it gives some perspective.

Stefan
Marvelous photos, and I do think having a few flakes of the Nakayama mixed in do add scale. One observation I have is that in looking at the Shapton grit it appears to be mechanically linked together in what looks like chains, rather than free floating or independent of each other grit particle.

There is so much information in these photos, very exciting. Alx

Originally Posted by alx

Stefan
Marvelous photos, and I do think having a few flakes of the Nakayama mixed in do add scale. One observation I have is that in looking at the Shapton grit it appears to be mechanically linked together in what looks like chains, rather than free floating or independent of each other grit particle.
Alx

it could be that or that it can be suspended better to disperse in evenly.

Originally Posted by alx

Stefan
Marvelous photos, and I do think having a few flakes of the Nakayama mixed in do add scale. One observation I have is that in looking at the Shapton grit it appears to be mechanically linked together in what looks like chains, rather than free floating or independent of each other grit particle.

There is so much information in these photos, very exciting. Alx

Hmmm. Makes me wonder if that is why the nature of synthetics clog with swarf so easy, the metal gets tangles up in the chaines. Awesome images, thanks for the time you take out of your busy lives to feed our minds. You guys are great!!!!!

I didn't read this thread super closely, but I don't think anyone commented on how awesome those pictures look. I don't really care what they tell me, I just like how they look. Saved them onto my desktop

Originally Posted by heirkb

I didn't read this thread super closely, but I don't think anyone commented on how awesome those pictures look. I don't really care what they tell me, I just like how they look. Saved them onto my desktop

Do you like fractals too? :-P

PS haven't seen you posting much recently. Good to know you're alive and well.

Very excellent images and data.
It might be interesting to look for and ID
swarf components as well. I fear that
iron and steel in the swarf would oxidize overnight.
But the carbides would not and perhaps the
morphology of the steel swarf might be
preserved (pseudomorph).

Do you also have access to an optical microscope?