Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1990-08-31
1991-06-11
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
264 65, 501136, 501137, 501138, C04B 3564
Patent
active
050230328
ABSTRACT:
This invention relates to new ceramic electrostrictive compositions having superior electrical properties, a process for the preparation of the new electrostrictive compositions and applications for the new compositions. Specifically, a solid solution composition of lead magnesium niobate-lead titanate--(barium titanate or stronium titanate) has exhibited desirable electrostrictive properties. This composition shows a diminished dependence of dielectric constant on temperature.
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Bailey Alex E.
Ritter Andrew P.
Sutherland Audrey E.
Winzer Stephen R.
Chin Gay
Derrington James
Martin Marietta Corporation
Mylius Herbert W.
Towner Alan G.
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