EP0208019A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Piezoelectric-polymer 0-3 composites for transducer applications
Assignee: Celanese Corp
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Filing: 1985-12-13
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Granted: —
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Expires: 2005-12-13
Abstract
Abstract A piezoelectric ceramic-polymer composite of 0-3 connectivity comprises as the piezoelectric filler a solid solution of PbTiO 3 -BiFeO 3 wherein the solid solution contains 50-80% weight of BiFeO 3 .
Inventors
- 👤 Jayne R. Giniewicz
- 👤 Robert E. Newnham
- 👤 Ahmad Safari
- 👤 Leslie H. Cross
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:39
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853; H10N30/8548; H10N30/852
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
41 words
A piezoelectric-polymer composite material of 0-3 connectivity which comprises: a matrix of insulating polymer and a piezoelectric ceramic powder dispersed within said polymer matrix, said ceramic powder comprising PbTiO 3 -BiFeO 3 solid solution containing 50-80% weight of BiFeQ 3 .
Claim 2
Dependent Claim
41 words
A piezoelectric-polymer composite material of 0-3 connectivity which comprises: a matrix of insulating polymer and a piezoelectric ceramic powder dispersed within said polymer matrix, said ceramic powder comprising PbTiO 3 -BiFeO 3 solid solution containing 50-80% weight of BiFeQ 3 .
Claim 3
Dependent Claim
26 words
The piezoelectric-polymer composite of claim 1 wherein said ceramic powder has been formed by quenching a solid solution of heated PbTiO 3 and BiFeO 3 .
Claim 4
Dependent Claim
13 words
The piezoelectric-polymer composite of claim 2 wherein said quenching is done in water.
Claim 5
Dependent Claim
13 words
The piezoelectric-polymer composite of claim 2 lwherein said quenching is accomplished in air.
Claim 6
Dependent Claim
17 words
The piezoelectric-polymer composite of claim 1 wherein said ceramic powder comprises 50-75 volume percent of said composite.
Claim 7
Dependent Claim
16 words
The piezoelectric-polymer composite of claim 5 wherein said ceramic comprises 60-75 volume percent of said composite.
Claim 8
Dependent Claim
19 words
The piezoelectric-polymer composite of claim 1 wherein said ceramic powder has an average particle size of about 5 microns.
Claim 9
Dependent Claim
55 words
A piezoelectric-polymer composite material of 0-3 connectivity which comprises a matrix of insulating polymer and a piezoelectric ceramic powder dispersed within said polymer matrix, said ceramic powder comprising a solid solution of PbTiO 3 -BiFeO 3 in such proportions so as to comprise a composition substantially along the tetragonal/rhombohedral phase boundary of said solid solution.
Claim 10
Dependent Claim
55 words
A piezoelectric-polymer composite material of 0-3 connectivity which comprises a matrix of insulating polymer and a piezoelectric ceramic powder dispersed within said polymer matrix, said ceramic powder comprising a solid solution of PbTiO 3 -BiFeO 3 in such proportions so as to comprise a composition substantially along the tetragonal/rhombohedral phase boundary of said solid solution.
Claim 11
Dependent Claim
35 words
The piezoelectric-polymer composite of claim 8 wherein said BiFeO 3 comprises 50-80 wt. % of said solid solution and wherein said ceramic powders have been formed by quenching the solid solution from an elevated temperature.
Claim 12
Dependent Claim
17 words
The piezoelectric-polymer composite of claim 9 wherein said ceramic powder comprises 60-75 volume percent of said composite.
References Cited (Backward Citations)
No citation records indexed.
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