Fast LIBS Identification of Aluminum Alloys

The present volume is a collection of selected papers published by the author during the period 1993 – 2008 to which I added a paper on the position of aluminum in the Periodic Table, another on gallium since it is mainly produced as a by-product of the aluminum industry, the history of aluminum as illustrated on postage stamps, and selected chapters on the chemistry of aluminum and some of its compounds. The Pioneers - Sainte Claire Devil - Castner - Hall and Héroult - Søderberg - Bayer Metallurgy - Extractive Metallurgy of Aluminum - History of Aluminum Alloys Selected Topics - Aluminum and Its Position in the Periodic Table - Aluminum, Alumina, and Aluminum Silicates - History of Aluminum on Postage Stamps - Gallium Update The collection in 160 pages gives a rapid and fully illustrated review of the history and extractive metallurgy of aluminum. It is hoped that it will be useful for students, engineers, chemists, geologists, and for the general reader.

Photonics Letters of Poland, 2017

Le Journal de Physique Colloques, 1988

We analysed A1-Li based alloys by means of atom-probe. The influence of parameters such as the tip temperature and the pulse fraction on the apparent composition were investigated for an A1-2.7at%Li alloy and for an Al-7.5at%Li-1.2at%Cu alloy. A ternary A1-3.5wt%Li-3.6wt%Mg alloy aged 24h at 190'C was studied. Atom-probe results point out the presence of Mg in the 6' phase.

General Characteristics. The unique combinations of properties provided by aluminum and its alloys make aluminum one of the most versatile, economical, and attractive metallic materials for a broad range of uses-from soft, highly ductile wrapping foil to the most demanding engineering applications. Aluminum alloys are second only to steels in use as structural metals.

Smithsonian Contributions to Museum Conservation

The current volume brings together papers presented at the 2014 “Aluminum: History, Technology and Conservation” conference held at the Smithsonian Institution’s American Art Museum; the conference was followed by a hands-on workshop held at the National Air and Space Museum’s Steven F. Udvar-Hazy Center, which utilized the museum’s collections to illustrate aluminum’s use, conservation challenges, and repair techniques as well as to introduce participants to analytical techniques such as X-ray fluorescence for the identification of aluminum alloys and finishes. The three day international conference and two-day workshop were co-hosted with the Smithsonian Institution, the Foundation for the American Institute for Conservation and the International Council of Museums Committee for Conservation Metals Working Group. An unprecedented group of speakers, organizers, and sponsors made possible the first ever conservation conference solely dedicated to aluminum. The conference featured pr...

General Characteristics. The unique combinations of properties provided by aluminum and its alloys make aluminum one of the most versatile, economical, and attractive metallic materials for a broad range of uses-from soft, highly ductile wrapping foil to the most demanding engineering applications. Aluminum alloys are second only to steels in use as structural metals.

Optics and Laser Technology, 2008

Laser-induced breakdown spectroscopy (LIBS) is a laser-based technique that can provide non-intrusive, qualitative and quantitative measurement of metals in various environments. LIBS uses the plasma generated by a high-energy laser beam to prepare and excite the sample in one step. In the present work, LIBS has been applied to perform elemental analysis of six trace elements simultaneously in aluminum alloy targets. The plasma is generated by focusing a pulsed Nd:YAG laser on the target in air at atmospheric pressure. LIBS limit of detection (LOD) is affected by many experimental parameters such as interferences, self-absorption, spectral overlap and matrix effect. We aimed to improve the LIBS LOD by optimizing these experimental parameters as possible. In doing so, a portable Echelle spectrometer with intensified CCD camera was used to detect the LIBS plasma emission. This advanced Echelle spectrometer provides a constant spectral resolution (CSR) of 7500 corresponding to 4 pixels FWHM over a wavelength range 200-1000 nm displayable in a single spectrum. Then, the calibration curves for iron, beryllium, magnesium, silicon, manganese and copper as minor elements were achieved with linear regression coefficients between 98-99% on average in aluminum standard sample alloys. New LOD values were achieved in the ppm range with high precision (RSD 3-8%). From the application view point, improving LIBS LOD is very important in the on-line industrial process control to follow-up multi-elements for the correct alloying in metals.

Revue De Metallurgie-cahiers D Informations Techniques, 2020

The article compares the results of three analytical methods for the determination of the chemical composition on the surface of certified standards and aluminum alloy products. It is glow discharge optical emission spectrometry (GDOES), optical emission spectrometry (OES) with spark discharge, and energetic dispersive X-ray fluorescence (ED-XRF). The results are supplemented by oxygen and nitrogen levels determined by thermo-evolutionary elementary analysis. First, standards with a certified composition were measured. It was found that the most appropriate analysis for determining the composition of aluminum alloys (with the exception of the quantitative determination of Fe and Zn) is glow discharge optical emission spectrometry. Optical emission spectrometry with spark discharge was identified as the most appropriate for determining the content of Fe and Zn. The ED-XRF analysis on the mobile spectrometer is sufficiently accurate in the case of measurement of aluminum alloys, excep...