Accession Number : AD0864492

Title :   Whisker Reinforcement of Piezoelectric Transducer Ceramics.

Descriptive Note : Final rept. 1 Jan-31 Dec 69 on Phase 2,

Corporate Author : TRACOR INC ROCKVILLE MD

Personal Author(s) : Triebes, K. J. ; Shaver, R. G.

Report Date : JAN 1970

Pagination or Media Count : 48

Abstract : The need exists for piezoelectric ceramics having increased tensile strength for eventual application in high-power sonar transducers. To this end, high-strength single-crystal whiskers of silicon carbide, silicon nitride, and sapphire have been incorporated into the matrices of barium titanate and lead zirconate titanate ceramics. Results to date indicate that a whisker reinforced ceramic can be fabricated without destroying its piezoelectric or dielectric properties. Although the activity of the whiskered material is somewhat lower than that of comparable pure ceramic, indications are that further developmental work will eradicate this deficiency. (Author)

Descriptors :   *REINFORCING MATERIALS), (*PIEZOELECTRIC TRANSDUCERS, TENSILE PROPERTIES), (*UNDERWATER SOUND GENERATORS, SONAR PROJECTORS), (*COMPOSITE MATERIALS, (*WHISKERS(CRYSTALS), CERAMIC MATERIALS), DIELECTRIC PROPERTIES, PIEZOELECTRIC EFFECT, INORGANIC COMPOUNDS, SINGLE CRYSTALS, SINTERING, BONDING, SHOCK RESISTANCE, SOLID SOLUTIONS, MANUFACTURING, LEAD COMPOUNDS, ZIRCONATES, SILICON CARBIDES, SILICON COMPOUNDS, NITRIDES, SAPPHIRE, BARIUM COMPOUNDS, TITANATES.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials
      Acoustic Detection and Detectors
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE