The second seed reached the fourth round when she broke the Austrian world number 49 for the seventh time with a thundering smash at the net to bring an end to a thoroughly one-sided contest on Rod Laver Arena.
Azarenka has not lost a set in her three matches this week and extended her winning streak at Melbourne Park to 17 matches.
The Belarussian will next meet American Sloane Stephens, who she beat in controversial circumstances in the semi-finals last year on her way to her second successive Australian Open title.
(Reporting by Nick Mulvenney; Editing by John O'Brien)
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