Mechanical properties and tribological behavior of Fe/nano-diamond composite prepared by hot-press sintering

Autor:	Hong-qun Tang, Mei-xing Zhu, Fenglin Zhang, De-long Xie, Meng-jie Zhai, Yu-mei Zhou, Yao-jie Huang
Rok vydání:	2021
Předmět:	Materials science Scanning electron microscope 020502 materials Composite number Diamond Sintering 02 engineering and technology engineering.material Microstructure Compressive strength 0205 materials engineering Flexural strength engineering Composite material Pearlite
Zdroj:	International Journal of Refractory Metals and Hard Materials. 95:105412
ISSN:	0263-4368
DOI:	10.1016/j.ijrmhm.2020.105412
Popis:	In the present study, Fe matrix composites reinforced with nano-diamond (ND) particulates were fabricated by hot-press sintering. The influence of the concentration of ND on the mechanical and tribological properties of as-sintered Fe/ND composites was investigated. The microstructures and properties of the Fe/ND composites were examined using X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. A pearlite microstructure is formed due to the reaction between Fe and ND in the sintering. The presence of ND provides higher hardness, compressive strength, and flexural strength. The composite with 1 wt% ND exhibits 51.5% higher hardness, 37.4% higher compressive strength, and 76.2% higher flexural strength than sintered Fe. In addition, the wear resistance will increase as the ND concentration increases. Fe/2 wt% ND composite exhibits much lower friction coefficient (COF) and higher wear resistance than a Fe/1 wt% ND composite and sintered Fe.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::af4ca50004c2ebcccec162293895150a https://doi.org/10.1016/j.ijrmhm.2020.105412 Zobrazit plný text záznamu Full Text from ScienceDirect