SEM investigation of minor constituents of carbide materials prepared from shungite rocks

Bulletin of materials science

Alexander V Nadutkin¹  Boris A Goldin¹  Ludmila Y Nazarova¹  Vladislav E Grass¹ 

[1] Institute of Chemistry, Komi Research Centre, Ural Branch of Russian Academy of Sciences, Pervomaiskaya 48, Syktyvkar 167982, Russia$$Institute of Chemistry, Komi Research Centre, Ural Branch of Russian Academy of Sciences, Pervomaiskaya 48, Syktyvkar 167982, RussiaInstitute of Chemistry, Komi Research Centre, Ural Branch of Russian Academy of Sciences, Pervomaiskaya 48, Syktyvkar 167982, Russia$$

关键词: Shungite rocks;    thermal processing;    carbide materials;    SiCâ€�?�Al2OC;    admixtures;    noble metals.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The ``SiCâ€�?�Al₂OCâ€�?-based composite prepared from Karelian shungite rocks has been studied by X-ray diffraction analysis and scanning electron microscopy. SEM investigation has been done to determine the mode and distribution of admixture constituents. It is found that the most common minor phase represents Alâ€�?�Feâ€�?�Siâ€�?�C-based alloys. Special attention has been given to describing the noble metals admixtures. It is revealed that the noble metals phases occur as separate microsized grains, most of which have been indicated as Auâ€�?�Agâ€�?�Hg amalgam and rarely as Pt-rich compounds. The obtained data can be mainly used to advance technologies for manufacturing carbide-based composite materials from natural carbonaceous rocks.

【 授权许可】

Unknown