Some aspects of boron filament elongation

Journal Article · Tue Jul 01 04:00:00 EDT 1980 · Ceram. Eng. Sci. Proc.; (United States)

DOI:https://doi.org/10.1002/9780470291030.ch4· OSTI ID:5810290

Wawner, F E ^[1]; Eason, J W ^[2]

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1. Virginia, University, Charlottesville, Va.
2. Avco Corp., Avco Speciality Materials Div., Lowell, Mass.

Experiments have been carried out in which boron filaments were produced by chemical vapor deposition in a static reactor in order to generate data to define a model for elongation and residual stresses in boron filaments. Substrates used in the study included tungsten of diameters 0.2, 0.5, 0.7, 1.0, 1.2, 1.5, and 1.7 mil and carbon of 1.4 mil diameter. Primary deposition variables studied were deposition temperature, flow rate, gas composition, tension, substrate diameter, doping, and boron elasticity. Experiments revealed a complex pattern of interacting factors. The definition of an elongation and residual stress model will require various definitive experiments for correlation with theoretical reasoning.

• OSTI ID: 5810290
• Report Number(s): CONF-780181-; CONF-790194-
• Journal Information: Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 1; ISSN CESPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360301* -- Composite Materials-- Preparation & Fabrication-- (-1987)
360303 -- Composite Materials-- Mechanical Properties-- (-1987)
BORON
CARBON
CHEMICAL COATING
CHEMICAL REACTORS
CHEMICAL VAPOR DEPOSITION
DEPOSITION
ELASTICITY
ELEMENTS
ELONGATION
FABRICATION
FILAMENTS
FLOW RATE
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
METALS
NONMETALS
REFRACTORY METALS
REINFORCED MATERIALS
RESIDUAL STRESSES
SEMIMETALS
STRESSES
SURFACE COATING
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS
TUNGSTEN