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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Preparation of ZrO_2 and ZrO_2/SiC powders by carbothermal reduction of ZrSiO_4
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Preparation of ZrO_2 and ZrO_2/SiC powders by carbothermal reduction of ZrSiO_4

机译：碳热还原ZrSiO_4制备ZrO_2和ZrO_2 / SiC粉

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摘要

This paper is dealing with the synthesis of zirconia/silicon carbide (ZrO_2/SiC) and ZrO_2 powders obtained by carbothermal reduction of natural mineral zircon (ZrSiO_4). For the first time, the influence of carbon to ZrSiO_4 ratio is thoroughly investigated for a wide range of compositions (C/ZrSiO_4 = l-8) and temperatures (1473-1973 K). The zircon powder was mixed with activated carbon as a reducing agent and heat treated in a controlled flow atmosphere of Ar. Periclase (MgO) was added in order to facilitate the formation of high temperature form of zirconia as well as to examine the possible catalytic effect of MgO on the overall reaction.
机译：本文研究了通过碳热还原天然锆石（ZrSiO_4）制备的氧化锆/碳化硅（ZrO_2 / SiC）和ZrO_2粉体的合成。第一次，对于各种各样的组成（C / ZrSiO_4 = 1-8）和温度（1473-1973 K），彻底研究了碳与ZrSiO_4之比的影响。将锆石粉与作为还原剂的活性炭混合，并在Ar的可控流动气氛中进行热处理。加入过氧化物酶（MgO）以便于形成高温形式的氧化锆，并检查MgO对整个反应的可能催化作用。

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