Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Piezoelectric ceramic, method for making the same, piezoelectric element, liquid discharge head, ultrasonic motor, and dust cleaner
A barium titanate piezoelectric ceramic having good piezoelectric properties and mechanical strength and a piezoelectric element that includes the ceramic are provided. A method for making a piezoelectric ceramic includes forming a compact composed of an oxide powder containing barium titanate particles, sintering the compact, and decreasing the temperature of the compact after the sintering. The sintering includes (A) increasing the temperature of the compact to a first temperature within a temperature range of a shrinking process of the compact; (B) increasing the temperature of the compact to a second temperature within a temperature range of a liquid phase sintering process of the compact after (A); (C) decreasing the temperature of the compact to a third temperature within the temperature range of the shrinking process of the compact after (B); and (D) retaining the third temperature after (C).
Piezoelectric ceramic, method for making the same, piezoelectric element, liquid discharge head, ultrasonic motor, and dust cleaner
A barium titanate piezoelectric ceramic having good piezoelectric properties and mechanical strength and a piezoelectric element that includes the ceramic are provided. A method for making a piezoelectric ceramic includes forming a compact composed of an oxide powder containing barium titanate particles, sintering the compact, and decreasing the temperature of the compact after the sintering. The sintering includes (A) increasing the temperature of the compact to a first temperature within a temperature range of a shrinking process of the compact; (B) increasing the temperature of the compact to a second temperature within a temperature range of a liquid phase sintering process of the compact after (A); (C) decreasing the temperature of the compact to a third temperature within the temperature range of the shrinking process of the compact after (B); and (D) retaining the third temperature after (C).
Piezoelectric ceramic, method for making the same, piezoelectric element, liquid discharge head, ultrasonic motor, and dust cleaner
MATSUDA TAKANORI (Autor:in) / SAITO HIROSHI (Autor:in) / FURUTA TATSUO (Autor:in) / HAYASHI JUMPEI (Autor:in) / WATANABE TAKAYUKI (Autor:in) / IFUKU TOSHIHIRO (Autor:in)
07.05.2019
Patent
Elektronische Ressource
Englisch
IPC:
H10N
/
B08B
Reinigen allgemein
,
CLEANING IN GENERAL
/
B41J
TYPEWRITERS
,
Schreibmaschinen
/
C04B
Kalk
,
LIME
/
H02N
Elektrische Maschinen, soweit nicht anderweitig vorgesehen
,
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
/
H03H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
,
Scheinwiderstandsnetzwerke, z.B. Resonanzkreise
| Europäisches Patentamt | 2017
Europäisches Patentamt | 2015
| Europäisches Patentamt | 2017
| Europäisches Patentamt | 2015
Europäisches Patentamt | 2016