Comparison of sample preparation methods for determination of free carbon in boron carbide by X-ray powder diffraction
| Autor: | Mohammad K. Amini, Masoud Bakhshi, Hamid Arab |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
010302 applied physics Detection limit Diffraction Materials science X-ray Analytical chemistry 02 engineering and technology General Chemistry Boron carbide 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound chemistry 0103 physical sciences Sample preparation Graphite 0210 nano-technology Ball mill Powder diffraction |
| Zdroj: | Journal of the Iranian Chemical Society. 13:1673-1681 |
| ISSN: | 1735-2428 1735-207X |
| DOI: | 10.1007/s13738-016-0884-0 |
| Popis: | Several sample preparation methods were evaluated for determination of free carbon in boron carbide powders by quantitative X-ray diffraction method, including ultrasonication, wet ball milling and dry ball milling–wet mixing. Quantitation was based on measuring the integral peak area ratio of the diffraction lines of graphite (002) to boron carbide (012) in samples spiked with pure graphite. The dry milling–wet mixing method provided the best precision and accuracy in all the measurements as well as in determination of free carbon in a boron carbide reference material. There was a linear relationship between the integral peak area ratios and graphite added to boron carbide samples which were purified from their free carbon content. The method provided a low detection limit of 0.05 wt% free carbon. |
| Databáze: | OpenAIRE |
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