Hydrothermal Reaction Sintering of Pure Cr2O3
Hydrothermal Reaction Sintering of Pure Cr2O3
复制标题
纯Cr2O3 的水热反应烧结
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
S. Sōmiya
中科院分区：
文献类型：
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作者：
S. Hirano;S. Sōmiya
为了制造纯高密度 Cr2O3，人们已经做了大量的工作。然而，氧化铬化合物的高挥发性使其致密化变得困难。迄今为止有关 Cr2O3 烧结的研究主要涉及控制烧结气氛和添加剂。哈格尔等人。 1 研究了 Cr2O3 在 Ar 气氛中的初始烧结，({p_{{{ ext{O}}_{ ext{2}}}}}) 约为 10−2 mm Hg，但无法获得高密度。 Ownby和Jungquist2研究了Cr2O3的最终烧结，关注氧活度和MgO的添加对Cr2O3烧结的影响。在 1600°C 时，他们的产品在 ({p_{{O_2}}} = 2imes {10^{ - 12}}) atm 处接近理论密度，而在 ({p_{{O_2}}} < {10^{ - 12}}) atm 时观察到由于铬氧化物挥发而导致的高重量损失，此时达到了最大密度。
Much work has been done in an effort to fabricate a pure high-density Cr2O3. High volatilization of chromium oxide compounds, however, made its densification difficult. The studies reported to date on the sintering of Cr2O3 have been concerned mainly with controlling the sintering atmosphere and the additives. Hagel et al. 1 studied the initial sintering of Cr2O3 in an Ar atmosphere with a ({p_{{{ ext{O}}_{ ext{2}}}}}) of ≈10−2 mm Hg but were unable to obtain a high density. Ownby and Jungquist2 studied the final sintering of Cr2O3, giving attention to the effect of oxygen activity and the addition of MgO on the sintering of Cr2O3. At 1600°C, their product approached theoretical density at ({p_{{O_2}}} = 2 imes {10^{ - 12}}) atm, whereas the high weight loss due to volatilization of chromium oxides was observed at ({p_{{O_2}}} < {10^{ - 12}}) atm where the maximum density was achieved.