Secondary fluorescence effects on x-ray microanalysis

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Proc. - Annu. Meet., Electron Microsc. Soc. Am.; (United States)

OSTI ID:5907667

Angelini, P; Bentley, J

The structure and composition of intergranular phases present in TiB/sub 2/ hot-pressed or sintered with Ni additive are being analyzed to evaluate sintering mechanisms. Analytical electron microscopy (AEM) has shown that the major intergranular phase present in TiB/sub 2/ hot-pressed with Ni is Ni/sub 3/B, but in TiB/sub 2/ sintered with Ni is a boride tau phase. Energy dispersive x-ray spectroscopy (EDS) of the intergranular Ni/sub 3/B indicated a Ti content of approx. 8 at. % (all compositions quoted are normalized where at % Ti + at % Ni = 100%). However, phase diagram data show Ni/sub 3/B to be a line compound with limited Ti solubility. The experiments were performed to assess the suspected influence of secondary fluorescence effects on EDS analyses.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5907667
• Journal Information: Proc. - Annu. Meet., Electron Microsc. Soc. Am.; (United States), Journal Name: Proc. - Annu. Meet., Electron Microsc. Soc. Am.; (United States) Vol. 42; ISSN EMSPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALLOYS
BORIDES
BORON COMPOUNDS
CHEMICAL COMPOSITION
FABRICATION
HOT PRESSING
MATERIALS WORKING
NICKEL ADDITIONS
NICKEL ALLOYS
PHASE STUDIES
PRESSING
SINTERING
SPECTROSCOPY
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTROSCOPY