Bookcover of Characterizing Defects In Metals Using PALS
Booktitle:

Characterizing Defects In Metals Using PALS

Characterizing Defects in Steel, Aluminum and Copper by way of Positron Annihilation Lifetime Spectroscopy

LAP LAMBERT Academic Publishing (2012-10-16 )

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ISBN-13:

978-3-659-25340-9

ISBN-10:
3659253405
EAN:
9783659253409
Book language:
English
Blurb/Shorttext:
Machines with moving parts develop wear and tear after some time of operation. Sometimes defects are on the surface, and thus are visible with the naked eye or with a microscope. However, some defects are seated below the surface and are unnoticeable by the human eye or by a microscope. One way of probing materials for these defects is by way of Positron Annihilation Lifetime Spectroscopy (PALS). This sensitive technique was applied to characterize atomic-scale defects in aluminum and copper samples, as well as steel bearing raceways of different levels of usage. Measurements on aluminum and copper were performed before and after annealing near the melting point. Results show that average positron lifetime decreases significantly after annealing. Then steel bearing raceways were subjected to PALS measurements before and after mechanical testing. Results show an average increase in the positron lifetime of tested bearings as compared to the as-fabricated bearing.
Publishing house:
LAP LAMBERT Academic Publishing
Website:
https://www.lap-publishing.com/
By (author) :
Jason Calloo
Number of pages:
68
Published on:
2012-10-16
Stock:
Available
Category:
Other
Price:
49.00 €
Keywords:
Positron, Gamma Rays, anti-matter, nuclear spectroscopy, atomic vacancies

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