| 摘要 |
<p>A piezoelectric ceramic composition for actuators, composed of lead, lanthanum, zirconium, titanium, magnesium, zinc, niobium, manganese, chromium and oxygen atoms, which contains manganese in an amount of at most 1.5% by weight as calculated as MN2O and chromium in an amount of at most 0.5% by weight as calculated as Cr2O3, relative to a main component composition of the formula (I): Pb(1-x)Lax[(1-z)(ZryTi(1-y))+z{MgqZn(1-q))1/3Nb2/3 }](1-x/4)O3 (I> wherein 0<x</=0.07, 0.40</=y</=0.65, 0</=q</=1, and 0<z</=0.40.</p> |
