Synthesis and characterization of AlMgB14 hot pressed under different environments
- Resource Type
- article
- Authors
- Yumei Zhou; Fenglin Zhang; Li Pengcheng; Kun Bai; Wu Shanghua; Shaoming Luo
- Source
- Science of Sintering, Vol 49, Iss 3, Pp 311-317 (2017)
- Subject
- AlMgB14
hot pressing
microstructure
properties
Chemical technology
TP1-1185
- Language
- English
- ISSN
- 0350-820X
1820-7413
AlMgB14 hot pressed under different environments from the elemental powders was investigated. The microstructure of the products was analyzed by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX) and X-ray diffractometer (XRD). The density, hardness and fracture toughness of AlMgB14 were also examined. The results show that single phase of MgAl2O4 is formed in hot pressed Al-Mg-B system in air. The addition of carbon powder cannot reduce the formation of MgAl2O4. Additional Al (10 wt.%) and Mg (10 wt.%) can effectively compensate for their loss in the formation of MgAl2O4 and enhance the production of AlMgB14 under agron atmosphere. The AlMgB14 with 10 vol.% spinel MgAl2O4 owns a hardness of 28.42 GPa and a fracture toughness of 2.92 MPa•m1/2.