Liquidus Projection of the Zr-Si-B Ternary System

• Published in: Journal of phase equilibria and diffusion Vol. 41; no. 2; pp. 123 - 131
• Main Authors: Borges Junior, Luiz Antonio, Pinto da Silva, Antonio Augusto Araújo, Coelho, Gilberto Carvalho, Nunes, Carlos Angelo
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.04.2020; Springer Nature B.V
• Subjects: Ceramics; Composites; Crystallography and Scattering Methods; Electric arc melting; Engineering Thermodynamics; Glass; Heat and Mass Transfer; Liquidus; Metallic Materials; Natural Materials; Phase equilibria; Physics; Physics and Astronomy; Projection; Refractory materials; Ternary systems; Thermodynamics; Zirconium compounds; Zr-Si-B system; liquidus projection; high temperature alloys
• ISSN: 1547-7037; 1863-7345; 1934-7243
• DOI: 10.1007/s11669-020-00787-4

The knowledge of phase equilibria in RM-Si-B systems (RM = Refractory and/or Reactive Metals) is of great interest for the elaboration of thermodynamic databases, aiming the development of high temperature materials. Despite this, no experimental investigation is available in the literature concerning the liquidus projection of the Zr-Si-B system. Based on that, in this work, the liquidus projection of the Zr-Si-B ternary system was experimentally investigated in the Zr-ZrB 2 -ZrSi 2 region via microstructural characterization of arc-melted alloys in the as-cast state using x-ray diffractometry and scanning electron microscopy. A proposal for the Zr-Si-B system liquidus projection is presented for the first time containing eight primary precipitation fields in which the ZrB 2 prevails and no signs of a ternary phase was found.