| General > General Technical Chat |
| Characterising neodymium magnets |
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| wraper:
--- Quote from: hanakp on March 04, 2023, 11:34:56 pm ---If you confirm there is a probem with the magnets themselves, there is a way to quickly and non-destructively check their elemental composition, but you won't like it. It's called X-ray fluorescence spectrometry and there are even handheld "guns" that can do it. But they're quite expensive and you need to observe rather stringent ionizing radiation precautions around them. In your case, even small flaws in elemental composition may cause the problem. Thus you may need a full-sized cabinet XRF machine, which have higher sensitivity, but are even more expensive than the "guns". --- End quote --- Again. They are nickel-copper-nickel plated. So you will be mostly measuring plating, not what's under it. XRF is not a magical device which measures what's deep inside of metal alloys. https://uchop.vscht.cz/files/uzel/0037768/0021~~iwhyUyhIzUstKUosyczPU0hJLSjJAAA.pdf?redirected |
| james_s:
You could strip the plating from a handful of sample magnets and test them. Or magnetize some samples without assembling into the final product and then test them and do further analysis on any that are not as strong as expected. |
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