Abrasive Particles under the SEM

Here is a selection of SEM images of various abrasive particles:

HA_CrOx_03

chromium oxide

HA_CrOx_01

chromium oxide

HA_CrOx_02

chromium oxide

HA_CrOx_04

chromium oxide

poly_diamond_100nm_02

100nm poly-diamond spray

poly_diamond_250nm_03

250nm poly-diamond spray

KenS_250nm_cBN_10

250nm cubic boron nitride (CBN) spray.

garnets

Garnets from a Belgian Coticule hone.

Cerium_Oxide

Cerium oxide particle (poly-crystalline).

KenS_250nm_cBN_11

250nm CBN spray.

KenS_250nm_cBN_12

250nm CBN spray

KenS_100nm_cBN_11

100nm CBN spray.

KenS_100nm_cBN_11

100nm CBN spray.

HA_quarter_micron_03

250nm mono-diamond spray.

KenS_100nm_cBN

100nm CBN spray.

HA_half_micron_04

500nm mono-diamond spray.

HA_half_micron

500nm mono-diamond spray.

HA_half_micron_01

500nm mono-diamond spray.

Cerium_Oxide_03

Cerium oxide particle (poly-crystalline).

TI_white_rasoir_03

Thiers Issard white Pate A Rasoir.

 

TI_white_rasoir_04

Thiers Issard white Pate A Rasoir.

 

TI_white_rasoir_06

Thiers Issard white Pate A Rasoir.

 

  9 comments for “Abrasive Particles under the SEM

  1. JG
    January 13, 2015 at 7:36 pm

    Interesting how the diamond sprays don’t have the crystalline form expected. Interesting, but not surprising, at how perfect the crystals are in the CrOx.

    Like

    • January 13, 2015 at 9:54 pm

      Also, a common misconception is that cubic boron nitride (CBN) is comprised of cube-shaped particles.

      Like

  2. February 19, 2016 at 8:02 pm

    Let’s see some corundum!

    Like

    • November 10, 2016 at 1:59 pm

      What I meant was: I’d find it interesting to see the alumina ceramic (sintered) stones.

      Like

  3. Edward Kinlen (Mirror Edge Sharpening)
    April 15, 2016 at 12:28 am

    This is awesome stuff, I appreciate the time and effort you have taken on this Blog, it’s very enlightening.

    Like

  4. Ben
    February 17, 2020 at 11:47 pm

    Why was there no Magnification bar for the Belgian Coticules?

    Like

  5. Mike Shults
    July 15, 2020 at 9:26 pm

    Hi Todd,
    I have some calcined white submicron aluminum oxide powder. Its supposed to be 0.25 micron, at least that is what is was told. I would be willing for give you some to have, and I would also be interested if the particle size is accurately sifted/graded.

    Thanks,
    Mike

    Like

  6. Dress Filliam
    March 2, 2021 at 2:54 am

    Is this kind of ‘specially prepared’ chromium oxide or just a regular powder from chemical store?
    Also, do these crystals break readily with use or do they behave as large irregular lumps?

    It’s really satisfying just to look at them.

    Like

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