IncoTest utilises industry standard methods of chemical analysis. Providing such a wide range of techniques ensures the client that samples are analysed by the most economical method, depending on the type of material, the form of the sample and the level of accuracy required.
IncoTest Laboratories use a number of industry standard techniques for the Chemical Analysis of a wide variety of metal alloys, including Iron, Nickel, Cobalt, Titanium, Copper and Aluminium based materials. Techniques employed include:
Wavelength Dispersive X-ray Flourescence Spectrometry
Routine analysis of the major alloying elements in Ferrous and non-Ferrous alloys. The sample must be in a solid form.
Inductively Coupled Plasma Optical Emission Spectrometry
This technique offers an alternative to XRF and conventional OES when sample size is limited or the sample form is unsuitable (e.g. turnings, fine wire or powder). The analysis involves dissolution of the sample, and therefore it is relatively easy to prepare closely matching calibration standards from pure metals and compounds. This is particularly important where appropriate CRMs are not available or where an independent over check is needed. Analysis includes major and minor alloying elements in ferrous and non-ferrous alloys as well as close range calibration for non-standard materials not covered by other techniques. Sample form is not critical unlike other "physical" testing methods such as XRF.
Inductively Coupled Plasma Mass Spectrometry using Laser Ablation Sampling
Trace elements in predominantly Nickel/Iron/Cobalt based materials. Using laser ablation sampling, the need for time consuming sample preparation is almost eliminated for solid samples.
Spark Source Optical Emission Spectrometry
Minor alloying elements in Ferrous and non-Ferrous materials.
Hollow Cathode Source Optical Emission Spectrometry
Trace elements (low melting point metals) in "Superalloys" and other materials to sub-ppm levels.
Carbon and Sulphur are determined by RF combustion in oxygen. The resulting carbon dioxide and sulphur dioxide are then measured by infra-red absorption and converted to the elemental concentrations.
Oxygen, Nitrogen and Hydrogen levels are determined by the Inert Gas Fusion method. The sample is melted under an inert gas stream in a graphite crucible and the gases evolved are measured by thermal conductivity or infra-red absorption. The instrumentation is calibrated for ferrous, non-ferrous, and titanium alloys in a variety of forms including powders.