Because of the HF content of Kroll's reagent which is very dangerous to handle, I would like to know if there is/are other etchants for titanium aluminium alloys. Thanks.
According to ASTM E407-7, there are many options.
One of them consists in KOH, H2O2 and water.
HF is avoidable, but the aspect of the etching may be different.
Best regards,
You can also try to replace HF with a fluoroacid, like HBF4 or H2SiF6. Etching is likely to be slower but the hazard is reduced (not eliminated).
Yes, there are alternative etchants to Kroll's reagent (a mixture of hydrofluoric and nitric acid) for titanium aluminum alloys. Here are a few options:
It is important to note that each of these alternative etchants has its own set of advantages and limitations, and the specific choice of etchant will depend on the specific application and desired outcome. Additionally, it is important to handle all etchants safely and appropriately, and to follow all necessary safety protocols and guidelines.
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