A dense and tough (B4C-TiB2)-B4C 'composite within a composite' produced by spark plasma sintering

作者：Bogomol I; Borodianska H; Zhao T; Nishimura T; Sakka Y; Loboda P; Vasylkiv O^*

来源：Scripta Materialia, 2014, 71: 17-20.

DOI：10.1016/j.scriptamat.2013.09.022

• Boron carbide
• Titanium diboride
• Spark plasma sintering
• Eutectic powder

A (B4C-TiB2)-B4C "composite within a composite" was spark plasma sintered using a mixture of B4C and B4C-TiB2 eutectic powders. The effect of the eutectic powders' morphology on the mechanical characteristics of composites is presented. Composites of eutectic powder with naked TiB2 fibers consolidated in nitrogen and argon atmospheres resulted in dense ceramics with improved mechanical properties. The room temperature and high temperature (1600 degrees C) bending strength and fracture toughness of the (B4C-TiB2)-B4C composite consolidated in a nitrogen atmosphere reached 387.2 MPa, 399.8 MPa and 7.76 MPa m(1/2), respectively.

• 出版日期2014-1-15
• 单位南阳理工学院