Polythermic Section B4C-LaB6 in the Ternary System La-B-C

Abstract

The interaction was studied and the polythermic section B 4 C3LaB 6 was constructed for the ternary system La3B3C described by a eutectic phase diagram.

Nonoxide High-Melting Point Compounds as Materials for Extreme Conditions

“…Our study of the systems that show promise for development of engineering ceramics has confirmed the existence of a broad range of quasi-binary sections, as described by the eutectic phase diagrams. To identify general interaction trends of the coexisting classes of the high-melting compounds we have reviewed the phase diagrams for many systems: B 4 C-Ме d B 2 [12], SiC-Ме d B 2 [13], SiC-Ме d Si 2 [14,15], Ме d B 2 -Ме d Si 2 [16,17], МеB 6 -Ме d B 2 [18], SiC-МеB 6 [19][20][21], B 4 C-МеB 6 [22,23], МеB 6 -Ме d 2 B 5 [24], Ме d С-Ме d 2 B 5 [25], B 4 C-Me V B 2 [26], B 4 C-W 2 B 5 [27], W 2 B 5 -ZrB 2 [28], etc. Fig.…”

Effects of CeO₂ Addition on Mechanical Properties of LaB₆/B₄C Composites

“…Because crack extension is always in those routes where consumption of energy is the least, fracture occurred partially at the interfaces between the CeO 2 , LaB 6 particles and B 4 C matrix. This is the cause that main fracture way of boron carbide-lanthanum boride composite material is intercrystalline rupture, which is in accordance with fracture mechanism of ceramic material [9][10][11] .…”