Accession Number : AD0258654

Title :   DEVELOPMENT OF ARC SPRAYING PROCESSES AND MATERIALS FOR SOLID ROCKET NOZZLES

Corporate Author : GENERAL ELECTRIC CO CINCINNATI OHIO

Personal Author(s) : KRAMER,B.E.

Report Date : 01 MAR 1961

Pagination or Media Count : 1

Abstract : Equipment for arc metallizing W was operated with an Ar-stabilized arc and W wire as a consumable electrode for spraying W onto a removable mandrel. A larger, more efficient arc gun was developed and in addition, a commercial plasma jet spray gun was obtained and evaluated. The powder plasma-jet-sprayed W performed better than wire sprayed W, but neither spray process gave satisfactory results in rocket firings. A number of avenues of investigation were pursued in an attempt to upgrade the material and produce lighter weight structures. The state of development of arc or plasma sprayed W provides a product which is resistant to the erosive effects of high temperature aluminized solid propellents at moderate pressures, and which is functionally competitive with pressed and sintered W powders. For use at high chamber pressures, sprayed W is inadequate. (Author)

Descriptors :   *FLAME SPRAYING, *ROCKET NOZZLES, ELECTRIC ARCS, MANUFACTURING, MATERIALS, PLASMA JETS, PROCESSING, REFRACTORY COATINGS, REFRACTORY MATERIALS, ROCKET ENGINES, SOLID ROCKET PROPELLANTS, TUNGSTEN

Distribution Statement : APPROVED FOR PUBLIC RELEASE