2025 PRODUCT GUIDE-INTERACTIVE - Flipbook - Page 151
Evolution
SPECTROMETRY
Evolution Fasteners (UK) Ltd utilize the most modern and
advanced spectroscopy techniques available at the cutting
edge of science to determine the elemental composition
of various metallic alloys, powders, liquids and polymers
used in construction products as well as being applicable
in other sectors such as Defence, Automotive, Aerospace
and Pharmaceuticals.
Atoms of different elements have distinct and
unique spectra: this allows the identification and
quantification of a sample’s elemental
composition.
As an example; the unique spectra of Hydrogen,
Neon and Iron can be seen here in the form of
Fraunhofer lines (emission).
We utilise the cutting edge in Optical Emission Spectroscopy (OES), X-Ray Fluorescence Spectroscopy (XRF),
Ultra-Violet Spectroscopy (UV-Vis) and Fourier Transform
Infrared Spectroscopy (FTIR) to provide accurate elemental
quantification and Positive Material Identification (PMI).
The principal scientific basis of our techniques is Atomic
Emission Spectroscopy (AES) and involves energising the
atoms of a sample and using light spectra to determine
the elemental composition. In our case we use visible,
ultraviolet and infrared light. X-Ray spectra is handled
differently.
The absorption and emissions are referred to as atomic
spectral lines and are created by the electronic transitions
of outer shell electrons as they rise and fall from one
electron orbit to another. Separately, atoms have distinct
X-Ray spectra that are attributed to the excitation of inner
shell electrons moving to excited states (this is the
principal used in XRF spectroscopy).
The different implementations of this through
OES (Optical Emission), XRF (X-Ray Fluorescence), FTIR (Fourier Transform Infrared) and
UV-Vis (Ultraviolet/ Visible light) can excite
observe and record certain elements, which is
why Evolution utilise the full suite of techniques to account for almost all elements in
the periodic tables of elements.
The services offered by Evolution Fasteners
(UK) Ltd are the elemental
analysis/ composition quantification and/
or positive material identification of:
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Low alloy, free cutting, Cr-Hard/ Ni-Resist, tool and High Mn steels
(OES)
Cr-Mo, Co, Ti and Ni-Co steels and alloys (XRF)
Stainless Steels (OES and/ or XRF)
Cast iron (OES)
Low alloy, Al-Cu, Al-Mg, Al-Si, Al-Si-Cu and Al-Zn aluminium alloys (OES
and XRF)
Precious metals (XRF)
Polymers and plastics (FTIR for PMI only)
Organic and non-organic solids/liquids (UV-Vis and FTIR for PMI only).
We can also provide RoHS
(Restriction of Hazardous Substances)
testing:
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Cd, Cr6+, Hg, Pb and Br in paints, plastics and
other materials (XRF Method)
Cr6+ specific quantification
by liquid (UV-Vis Method).
151
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SUPPLEMENTARY
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