Characterization of YBa sub 2 Cu sub 3 O sub 7 minus X in a mechanical properties microprobe

Journal Article · Tue Dec 31 23:00:00 EST 1991 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(92)90359-M· OSTI ID:7182547

Martinez, L ^[1]; Oliver, W C; Williams, R K ^[2]

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1. Inst. de Fisica, Univ. Nacional Autonoma de Mexico, A.P. 139-B, 62191 Cuernavaca, Morelos (MX)
2. Metals and Ceramics Div., Oak Ridge National Lab., Oak Ridge, TN (US)

Early after the discovery of the high Tc superconductors several authors indicated severe limitations of these materials for many possible industrial applications. The extreme brittle behavior of sizable samples has impaired the mechanical characterization of the ceramic superconductors. Recent developments in small scale hardness testing have now made it possible to make hardness indents in materials and derive meaningful mechanical properties data. This has largely been accomplished by instrumenting specialized hardness testing equipment with high resolution devices to monitor continuously the loads and displacements experienced by the contact of the indenter on the material. By proper analysis of the load displacement data, it is also possible to determine a number of material properties which cannot normally be obtained using conventional microhardness testing such as the elastic modulus. In this paper the authors characterized the mechanical properties of YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} crystallites by employing a Nanoindenter.

• OSTI ID: 7182547
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 26:1; ISSN SCRME
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BRITTLENESS
CHEMICAL COMPOSITION
CONTROL
COPPER COMPOUNDS
CRITICAL CURRENT
CRYSTAL STRUCTURE
CUPRATES
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
GRAIN BOUNDARIES
HARDNESS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MECHANICAL PROPERTIES
METALLURGY
MICROHARDNESS
MICROSTRUCTURE
OXYGEN COMPOUNDS
PHASE STABILITY
PHYSICAL PROPERTIES
POWDER METALLURGY
QUALITY CONTROL
STABILITY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YOUNG MODULUS
YTTRIUM COMPOUNDS