I have an Aluminium based composite that has carbides present as reinforcement. I am trying to evaluate the carbon content. Can someone suggest a few experimental techniques that are accurate over a large compositional range (from ppm to about 10wt.%)?
The simplest method is image analysis of the cross-section. On a cross-section, the carbide inclusions are very clearly visible and contrast with the Al matrix, both in optical and electron microscopy. For this reason, the volumetric composition of the material can be determined very precisely. To evaluate, you only need the image in good resolution and a modern app for image analysis.
Dear Dr. Vadim Verlotski
Laser Induced Breakdown Spectroscopy (LIBS) is capable for analyzing carbon in steel. Is that applicable as well for the case of analyzing carbon in aluminum based composite that has carbides present as reinforcement?...With my best regards ..
https://www.thermofisher.com/blog/metals/the-4-methods-for-analyzing-carbon-in-steel-which-is-best/
You may wish to carryout any of the following analyses:
1. SEM/EDS- This will give you elemental composition of the aluminum
2. Combustion analysis with Infrared Spectroscopy: At high temperature the carbon in the aluminum burn to give CO2 which is the measured by IR
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