Knife blades: the blade of the ceramic knife will keep sharp for a lot longer than that of the metal knife, even though it is much more brittle and at risk of breakage. The piezoelectric outcome is usually more robust in materials that also show pyroelectricity, and all pyroelectric materials https://superparamagneticbeads29552.muzwiki.com/47674/examine_this_report_on_what_is_ceramica