Arc-melting preparation of single crystal LaB/sub 6/ cathodes

Patent · Tue Jun 21 00:00:00 EDT 1977

OSTI ID:5363587

Gibson, E D; Verhoeven, J D

A method for preparing single crystals of lanthanum hexaboride (LaB/sub 6/) by arc melting a rod of compacted LaB/sub 6/ powder is discussed. The method is especially suitable for preparing single-crystal LaB/sub 6/ cathodes for use in scanning electron microscopes (SEM) and scanning transmission electron microscopes (STEM). 1 figure, 1 table.

• Assignee: Energy Research and Development Administration
• Patent Number(s): US 4030963
• Application Number: TRN: 78-001586
• OSTI ID: 5363587
• Resource Relation: Patent File Date: Filed date 27 Jan 1976; Other Information: PAT-APPL-652,695
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRON GUNS
CATHODES
LANTHANUM BORIDES
CRYSTAL GROWTH
ELECTRON MICROSCOPES
FABRICATION
MELTING
MONOCRYSTALS
BORIDES
BORON COMPOUNDS
CRYSTALS
ELECTRODES
LANTHANUM COMPOUNDS
MICROSCOPES
PHASE TRANSFORMATIONS
RARE EARTH COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication