Fabrication of NiAl–Al2O3-WC nanocomposite by mechanical alloying and subsequent heat treatment. Issue 15 (15th October 2019)

• Record Type: Journal Article
• Authors: Goudarzi, A.; Lalianpour, A.; Zarezadeh Mehrizi, M.; Beygi, R.; Eisaabadi B, G.
• Is Part Of: Ceramics international. Volume 45:Issue 15(2019)
• Page Start: 19049
• Page End: 19054
• Publication Date: 2019-10-15
• Subjects: NiAl-Al2O3-WC -- Mechanical alloying -- Heat treatment -- Nanocomposite; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.06.147
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this study, NiAl–Al2 O3 -WC nanocomposite has been synthesized from the Al–NiO–W–C powder mixture by mechanical alloying and subsequent heat treatment. Phase development and structural changes were studied by X-ray diffraction technique, field-emission gun scanning electron microscopy, and transmission electron microscopy. XRD results showed that NiO was disappeared after 20 h milling and NiAl and W2 C phases were formed. By the increase of milling time, no phase development was observed. So for access to desired compounds, 40 h milled powder thermally treated at 1200 °C for 3 h, and XRD and TEM results confirmed the formation of NiAl-WC-Al2 O3 nanocomposite.