Table 1
Sample symbols, names and treatments.
Symbol Treatment
ZT Blasting, dual acid etching (first acid etching in HF), treatment in dilute
hydrogen peroxide at room temperature
ZTM Blasting, dual acid etching (first acid etching in HF) and final oxidation in
concentrate H2O2 at high temperature
ZTF Blasting, dual acid etching (first acid etching in HBF4), treatment in dilute
hydrogen peroxide at room temperature
ZTFM Blasting, dual acid etching (first acid etching in HBF4) and final oxidation
in concentrate H2O2 at high temperature