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Artigo Acesso aberto Revisado por pares

Arianit A. Reka, Blagoj Pavlovski, Kiril Lisichkov, Ahmed Jashari, Blažo Boev, Ivan Boev, Maja Lazarova, Volkan Eskizeybek, Ayhan Oral, Глигор Јовановски, Petre Makreski,

The physico-mechanical, chemical and mineralogical characteristics of volcanic glass (perlite) from the Mariovo region (Macedonia) as well as the mineralogical changes that occur during its thermal treatment were investigated to demonstrate its utilization for industrial use.The native perlite was characterized by chemical analysis, X-ray powder diffraction (XRPD), infrared (IR) spectroscopy, thermal analysis (TGA/DTA), scanning electron microscopy (SEM-EDX), transmission electron microscopy (TEM), and ...

Tópico(s): Glass properties and applications

2019 - Institute of Geology Zagreb | Geologia Croatica

Artigo Acesso aberto

Jesús Hernández-de la Torre, Asdrúbal Braulio García-Domínguez, Luís Orlando Martín-Carvajal,

Improved materials are required for increasing the durability of sugar mills trash plates, considering their mechanical properties. The aim of this work was to obtain a gray cast iron, slightly alloyed with chromium, to raise the combined wear resistance. The gray alloy cast was proposed with 0,5% Cr and 0,1% Sn, with a high level of perlite, and the performance of its properties was compared with the other experimental alloys. Finally, it is demonstrated that the values of hardness and combined ...

Tópico(s): Advanced machining processes and optimization

1983 - High Institute of Mining and Metallurgy (ISMM) | Minería y geología