Accession Number : ADA299137

Title :   Single Crystal Terfenol-D Development.

Descriptive Note : Final rept.,

Corporate Author : EDO CORP SALT LAKE CITY UT UNDERSEA WARFARE DIV

PDF Url : ADA299137

Report Date : 28 JUL 1994

Pagination or Media Count : 89

Abstract : This report will provide a review of both existing and newly attempted methods for processing Terfenol-D. This review will describe each process and highlight both benefits and drawbacks of each method. The commonly used method of manufacturing Terfenol-D today is the referred to as the Float Zone Growth Method. EDO proposed to develop the following two alternate manufacturing methods the Traveling Heater Method and the Dash Method. The Traveling Heater Method appeared to provide the greatest probability of success and was therefor the focal point at the onset of the process development. Due the short duration of the contract, approximately 3-4 months, little effort was initiated on the DASH Method. The objective of this program has been to develop low cost processes that would produce single, non dendritic and non-rotationally twinned crystals of the rare earth magnetostrictive material Terfenol-D (RFe2). jg p.5

Descriptors :   *SINGLE CRYSTALS, MANUFACTURING, LOW COSTS, GROWTH(GENERAL), FLOATS, RARE EARTH COMPOUNDS, MAGNETOSTRICTION, HEATERS.

Subject Categories : Inorganic Chemistry
      Laminates and Composite Materials
      Mfg & Industrial Eng & Control of Product Sys
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE