Last updated 24th June 2024

ISO 11938:2012 Methods for elemental mapping analysis using wavelength dispersive spectroscopy

The ISO 11938:2012 International Standard describes how to use wavelength-dispersive spectrometry for electron microprobe elemental mapping analysis. There is a choice between large-area mapping, which uses stage movement alone, and electron beam mapping, which uses the electron beam traveling digitally across the object. The article discusses five different approaches to data processing: the k-value method, the calibration method, the correlation method, the matrix correction method, and the raw X-ray intensity data method.

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    Introduction to ISO 11938:2012

    Over the past 50 years, electron probe microanalysis (EPMA) has been created and has numerous applications in both science and industry. For instance, mineralogy and metallurgical research make substantial use of both precise quantitative and qualitative analysis. With the development of digital processing techniques brought about by computer advancements in recent years, element distributions may now be qualitatively observed through the use of color mapping techniques, as opposed to X-ray dot pictures. These make it possible to compare and assess items to maintain quality. Careful selection of the experimental parameters is necessary for particle analysis and/or phase analysis utilizing mapping, and a standard must be available for this purpose to get consistent and trustworthy results. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ISO 11938:2012 tests for our clients.

    ISO 11938:2012 Test Method

    Mapping Analysis

    Location, size, and pixel selectionThe location and size of the required map area on the specimen are selected, along with the number of pixels to meet the required spatial resolution. The method of acquisition (stage or beam mapping) is chosen. Additionally, the element and instrument conditions are selected and applied.
    Collection of results and display dataCharacteristic peak and background X-rays, along with any required electron signals, are collected at each pixel. All data is stored in the computer memory, point by point. The chosen correction method is applied to the X-ray data. Finally, the data can be displayed as pseudo-color maps.

    ISO 11938:2012 Test Specimens

    Specimen DetailsThe specimen must be treated to reduce the impact of mistakes and artifacts on the mapping analysis without jeopardizing its integrity. The specimens ought to be dust-free and spotless.
    Specimen SizeCarbon typically has to be between 10 and 20 nm thick to create effective conduction. The same element should be applied to the reference material and the unknown item at the same thickness.

    ISO 11938:2012 Test Results

    ISO 11938:2012 describes techniques for elemental-mapping analysis in electron probe microanalysis employing wavelength dispersive spectroscopy. It describes how to gather characteristic peaks and background X-rays at each pixel, record the data in computer memory, and add any required electron signals. 

    ISO 11938:2012 Related Tests

    ISO 11938:2012 is related to tests including ISO 5725-6 for accuracy values, ISO 14594 for using wavelength dispersive spectroscopy to determine experimental parameters, and ISO 16592:2006 for measuring the carbon contents of steel.

    FAQ's

    Where can I get the iso 11938 2012 tested?

    You can share your iso 11938 2012 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific iso 11938 2012 test to various testing techniques.

    How much do I need to pay for the iso 11938 2012 test?

    Please contact us for a detailed quote for your iso 11938 2012 testing needs. Cost incurred to carry out different iso 11938 2012 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

    How many samples are required for iso 11938 2012?

    The required number of samples or specimens should comply with the procedure given in the iso 11938 2012 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

    How much discount can I get on the iso 11938 2012 test?

    MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

    How many days will it take to complete the iso 11938 2012 test?

    The turnaround time for iso 11938 2012 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

    Where can I get the iso 11938 2012 tested?

    You can share your iso 11938 2012 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific iso 11938 2012 test to various testing techniques.

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