文件大小:113K
PROBLEM TO BE SOLVED : To provide a piezoelectric ceramic material having electromechanical coupling coefficient and mechanical quality factor satisfying a level not less than a specific value and having high stability of piezoelectric characteristics to the change of a temperature. SOLUTION : The piezoelectric ceramic material has a composition formula expressed by Pbx[(Co1/3Nb2/3-y)a(Sb1/2Nb1/2)bTicZrd]O3+(e) wt.% R2O3 (where, a+b+c+d=1 and R expresses a rare earth element) and the composition range is 0.92≤x≤1.00, 0
点赞 0
反对 0
举报 0
收藏 0
打赏 0
评论 0

- MAGNETIC GARNET SINGLE CRYSTAL
0下载369浏览99K

- The solid electrolyte type fuel cell
0下载486浏览434K

- Carbon Dioxide Separation Method and Apparatus
0下载112浏览1703K

- 一种高强可焊锌合金及其管材的连续挤压制备工艺
0下载439浏览637K

- R-T-B based rare earth permanent magnetic
0下载443浏览938K

- Lithium-ion secondary battery
0下载110浏览1441K