Secondary fluorescence effects on x-ray microanalysis
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
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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