Microstructure and mechanical properties of ZrCW matrix composite prepared by reactive infiltration at 1300°C

Autor:	Yujin Wang, Yan-Wei Zhao, Jun-Ping Li, Guiming Song, Yu Zhou, Lei Chen
Rok vydání:	2013
Předmět:	Materials science Composite number Alloy chemistry.chemical_element engineering.material Tungsten Microstructure Fracture toughness Flexural strength chemistry Transmission electron microscopy engineering Composite material Porosity
Zdroj:	International Journal of Refractory Metals and Hard Materials. 37:40-44
ISSN:	0263-4368
DOI:	10.1016/j.ijrmhm.2012.10.014
Popis:	Fully dense ZrC W matrix composite was fabricated by reactive infiltration technique, where molten Zr 2 Cu alloy infiltrated into a porous WC preform at 1300 °C in vacuum. The ZrC W composite exhibits a core-shell structure feature: gray WC cores were enveloped by bright tungsten shells, which are homogeneously distributed in the ZrC matrix. X-ray diffraction and transmission electron microscopy investigation show that nano-sized Zr x Cu y C z particles were formed in the ZrC matrix. The Vicker's hardness, flexural strength and fracture toughness of the ZrC W composite are measured as 14.5 GPa, 615 MPa and 11.7 MPa m 1/2 , respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::716272a9d259188ba199f11ca6456566 https://doi.org/10.1016/j.ijrmhm.2012.10.014 Zobrazit plný text záznamu Full Text from ScienceDirect