Plasma-sprayed tantalum/alumina cermets

Technical Report · Wed Nov 30 23:00:00 EST 1977

DOI:https://doi.org/10.2172/5348376· OSTI ID:5348376

Kramer, C M

Cermets of tantalum and alumina were fabricated by plasma spraying, with the amount of alumina varied from 0 to 65 percent (by volume). Each of four compositions was then measured for tensile strength, elastic modulus, and coefficient of thermal expansion. In general, strength and strain to failure decreased with increasing alumina content: 62 MPa for 100 percent Ta to 19 MPa for 35 v percent Ta. A maximum of 0.1 percent strain was observed for the sprayed 100 percent Ta specimens. The coefficient of thermal expansion measured for the pure Ta was 6.2 (10/sup -6/)/K.

• Research Organization: Sandia Labs., Livermore, Calif. (USA)
• DOE Contract Number: EY-76-C-04-0789
• OSTI ID: 5348376
• Report Number(s): SAND-76-8054
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CERMETS
CHALCOGENIDES
COMPOSITE MATERIALS
DEPOSITION
ELASTICITY
ELEMENTS
EXPANSION
FABRICATION
MECHANICAL PROPERTIES
METALS
OXIDES
OXYGEN COMPOUNDS
PLASMA ARC SPRAYING
REFRACTORY METALS
SPRAY COATING
SURFACE COATING
TANTALUM
TENSILE PROPERTIES
THERMAL EXPANSION
TRANSITION ELEMENTS