Wilmarth had been experimenting with glass since the late 1960s and discovered for himself the process of etching glass with hydrofluoric acid which allowed him a painterly control of the medium. (fac.umass.edu)
In February, the company announced its Vanadium - Titanium Speewah project also included a large, high - grade resource of fluorspar, which is used mainly in the manufacture of hydrofluoric acid and aluminium fluoride, a flux for aluminium smelting. (businessnews.com.au)
Ti (3) SiC (2) was the first MAX phase Drexel researchers tried to selectively etch in 2011, but synthesis failed using hydrofluoric acid alone because the silicon atoms are strongly bound to the adjacent transition metal atoms. (sciencedaily.com)