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5. Examples of particle separation and identification using non-analytical ferrography
Although the non-magnetic particles are not sensitive to the magnetic field as they pass over the ferrograph, they are deposited randomly. The result is a ferrogram with two types of particles:
magnetic particles ;
non-magnetic particles.
These appear white and are indistinguishable by light microscopy. A few droplets of 0.1 mol/L acidic or basic solution are then deposited and the ferrogram is heated to 90°C using a hot plate. Some particles become soluble and, with increased heating, color changes are observed, depending on the type of metal. The various treatments and results are shown in Table 9 .
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Examples of particle separation and identification using non-analytical ferrography
Application to biological problems
Bibliography
Digital media
Wear Debris Atlas – Spectro. Inc – Email : http://[email protected]
Wear Particle Atlas 2.0 – CD ROM Noria – Lubrosoft Pty Ltd – http://[email protected]
Tribology Solutions – CSI LTS – Computational systems, Inc....
Software tools
Visilog 7 image analysis software from Noesis – http://www.noesis.fr
Open source image analysis software Image J – https://imagej.fr.softonic.com/
Websites
http://www.machinerylubrication.com/Read/960/wear-debris-analysis
http://www.machinerylubrication.com/Read/28859/lubricant-particles-characterization
Standards and norms
- - NF EN ISO 8785 - décembre 1999
- - ISO 4406 - 1999
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