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- Title
Synthesis and Characterization of AlMgB<sub>14</sub> Hot Pressed Under Different Environments.
- Authors
Zhou Yumei; Zhang Fenglin; Li Pengcheng; Bai Kun; Wu Shanghua; Luo Shaoming
- Abstract
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.
- Subjects
HOT pressing; POWDERS; MICROSTRUCTURE; SCANNING electron microscopy; ENERGY dispersive X-ray spectroscopy; X-ray diffraction
- Publication
Science of Sintering, 2017, Vol 49, Issue 3, p311
- ISSN
0350-820X
- Publication type
Article
- DOI
10.2298/SOS1703311Y