Eutectic LaB₆–ZrB₂ powder was synthesized by borothermal reduction of an La(OH)₃–ZrO(OH)₂ mixture under vacuum with isothermal curing at 1200 – 1600°C. The mixture of hydroxides was prepared via coprecipitation from aqueous solutions of La and Zr nitrates in a suspension of amorphous boron. The effect of an excess of B on the phase and elemental compositions of the boride mixture was studied. The particle size of the obtained powders depended on the synthesis temperature.

中文翻译：

---

硼悬浮共沉淀La（OH）3和ZrO（OH）2的硼热还原合成LaB 6 -ZrB 2粉末混合物

共晶LaB ₆ –ZrB ₂粉末是通过在真空下在1200 – 1600°C下等温固化硼化还原La（OH）₃ –ZrO（OH）₂混合物而合成的。通过在无定形硼的悬浮液中从La和Zr硝酸盐的水溶液中共沉淀来制备氢氧化物的混合物。研究了过量的B对硼化物混合物的相和元素组成的影响。所得粉末的粒度取决于合成温度。