Published October 1989
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Characterization of monel alloys by X-ray fluorescence technique
Creators
- 1. Coordenadoria para Projetos Especiais, Sao Paulo, SP (Brazil)
Description
Method for the determination of Ni, Cu, Fe, Mn, Si, Al, Ti, Co, Cr and Mo in Monel alloys using thin film for sample preparation and X-ray fluorescence techniques is described. Samples in filings form were completely dissolved with inorganic acids and they were made up to a known volume. Then, these samples were deposited in a filter paper, reducing in this form the effect of the matrix. For all elements the first order emission Kα lines were selected for measurements and for excitation a rhodium X-ray tub was utilized. For the heavier elements the LiF (200). (author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Desenvolveu-se um metodo para a determinacao dos teores de Ni, Cu, Fe, Mn, Si, Al, Ti, Co, Cr, e Mo em ligas de Monel utilizando-se as tecnicas de deposicao em filme fino para a preparacao das amostras e fluorescencia de Raios-X. As amostras na forma de limalhas, sao solubilizadas totalmente com acido inorganico, levadas a volume e posteriormente depositadas em papel de filtro, onde o efeito matriz e minimizado. Foram selecionadas, para todos os elementos, as linhas de emissao Kα de primeira ordem, utilizando-se o cristal analisador LiF (200) e detector de cintilacao para os elementos mais pesados e o cristal analisador PET (002) e detector proporcional de fluxo para os elementos mais leves e tubo de raios-X com anti-catodo de Rh. As curvas de calibracao foram ajustadas pelo metodo de minimos quadrados e os desvios observados na analise apresentaram erros menores que 5%. As faixas dos teores estudadas foram: Ni: 30-80%; Cu: 10-35%; Fe: 0,1-4%; Cr, Co e Mo: 0,05-1%; Ti: 0,8-4%; Mn: 1,2-5% e Al e Si: 0,1-5%. (autor)Files
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Additional details
Additional titles
- Original title (Portuguese)
- Caracterizacao de ligas de monel pela tecnica de fluorescencia de raios-X
Publishing Information
- Imprint Pagination
- 25 p.
- Report number
- IPEN-PUB--270
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 21022632
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CALIBRATION; INORGANIC ACIDS; MONEL; NICKEL BASE ALLOYS; PROPORTIONAL COUNTERS; SCINTILLATION COUNTERS; X-RAY FLUORESCENCE ANALYSIS
- Descriptors DEC
- ALLOYS; CHEMICAL ANALYSIS; HYDROGEN COMPOUNDS; INORGANIC COMPOUNDS; MEASURING INSTRUMENTS; NICKEL ALLOYS; NONDESTRUCTIVE ANALYSIS; RADIATION DETECTORS; X-RAY EMISSION ANALYSIS