A mechanically induced self-sustaining reaction (MSR) was used to synthesize hafnium diboride nanoparticles. Along this route, magnesium was selected as a robust reducing agent for co-reduction in boron and hafnium oxides in a combustive manner. Combustion occurred after a short milling period of 12 minutes. The hafnium diboride nanoparticles had a polygonal faceted morphology and were 50-250 nm in diameter. The assessment of the processing mechanism revealed that the initial combustive reduction in B₂O₃ to elemental B by Mg was the major step for progressing the overall reaction. After that, HfO₂ can be reduced to elemental Hf, followed by the synthesis of HfB₂ phase.

中文翻译：

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镁热反应自蔓延合成HfB2纳米粒子

机械诱导的自持反应（MSR）用于合成二硼化nanoparticles纳米粒子。沿着这条路线，镁被选择作为一种坚固的还原剂，以可燃方式共还原氧化硼和氧化ha。在短短的12分钟碾磨时间后发生燃烧。二硼化nanoparticles纳米颗粒具有多边形的多面形态，并且直径为50-250nm。对加工机理的评估表明，Mg将B ₂ O ₃最初燃烧还原为元素B是进行整个反应的主要步骤。之后，可以将HfO ₂还原为元素Hf，然后合成HfB ₂相。