METAL ALLOYS

Method

X-ray fluorescence (XRF) spectrometry

The determination of elements at concentrations above 0.001% and 100% are carried out in metallurgical samples using X-ray fluorescence spectrometry.

Sample preparation

Samples for presentation to the XRF Spectrometer for analysis are required to be in the form of a 40 mm diameter by 1-10 mm thick disc (either turned or cast). Machining of raw materials can, where necessary, be undertaken by SpectraChem Analytical.

Solders received as "slugs" of 20-40 grams are pressure-moulded into discs of 40 mm diameter and 1-10 thickness for analysis.

Elements analysed

Programs are currently available for the routine determination of up to 20 elements in metal alloys. Many others are also determinable. To view a layout of these elements, click here.

Quality assurance

Calibration of the spectrometer for the measurement of alloys is carried out using a number of international reference standards of appropriate compositional range for each element of interest in accordance with the requirements of International Accreditation New Zealand - ISO 17025.