Synthesis and Characterization of Bulk Zr2Al3C4 Ceramic
Polycrystalline Zr2Al3C4 was fabricated by an in situ reactive hot-pressing process using zirconium (zirconium hydrides), aluminum, and graphite as starting materials. The investigation on reaction path revealed that the liquid Al played an important role in triggering the formation of ternary zirconium aluminum carbides. The mechanical properties of Zr2Al3C4 at room temperature were measured (Vickers hardness of 10.1 GPa, Young's modulus of 362 GPa, flexural strength of 405 MPa, and fracture toughness of 4.2 MPa·m1/2). The electrical resistivity and thermal expansion coefficient were determined as 1.10 Ω·m and 8.1 × 10−6 K−1, respectively.
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Document Type: Research Article
Affiliations: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Publication date: 01 November 2007