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采用碳热还原合成技术来生产ZrB2晶须。通过在1300～1500℃的温度范围于氩气气氛中加热ZrB2、H2BO3和炭黑的混合物来进行合成。试验了不同的元素,如:Ni、Co和Fe来了解它们作为催化剂的作用。合成的粉料含有作为主要相的ZrB2和作为次要相的B4C。发现晶须的产量在低温(<1500℃)时低,然后随着高温分解温度而升高。作为催化剂加入Ni比加入Co或Fe似乎更有效。在采用Co作为催化剂的情况下,发现晶须长度较短,而采用Fe作为催化剂显示出晶须为棒状和特殊鸟巢式晶须。晶须的电子显微镜研究发现了各种缺陷。
Production of ZrB2 whiskers by carbothermal reduction synthesis. The synthesis was performed by heating a mixture of ZrB2, H2BO3 and carbon black in an argon atmosphere at a temperature range of 1300-1500C. Different elements such as Ni, Co and Fe were tested to understand their role as catalysts. The synthesized powder contains ZrB2 as a major phase and B4C as a minor phase. The yield of whiskers was found to be low at low temperatures (<1500 ° C) and then increased with pyrolysis temperature. Adding Ni as a catalyst seems to be more effective than adding Co or Fe. In the case of using Co as a catalyst, the whisker length was found to be short, whereas the use of Fe as a catalyst showed whiskers of rod-like and special nesting whiskers. Electron microscopic studies of whiskers have found various defects.