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Tips On Finding A Good Etchant For Metals

Published online by Cambridge University Press:  14 March 2018

Bernard Kestel
Bernard Kestel*
Affiliation:
Argonne National Laboratory

Extract

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Start with a handbook of chemistry and physics, In the tables of physical constants will be listed the metals solubilities in various acids. Pick an appropriate acid, and as a first try use 10% acid in methanol (a good electrical conductor). Ethanol is less conductive and more viscous than methanol. Always check chemical safety before starting. Never mix nitric acid with ethanol, for example; it explodes above a 5% concentration. Chill the solvent to at least 0° C before adding acid.

Type
Research Article
Information
Microscopy Today , Volume 5 , Issue 10 , December 1997 , pp. 6 - 7
Copyright
Copyright © Microscopy Society of America 1997

References

Kestel, B.J., 1986, Non-acid electrolyte thins many materials for TEM without causing hydride formation, Ultramicroscopy 19:205–212.Google Scholar