Oriented eutectic microstructures in the system Al2O3/ZrO2
Oriented eutectic microstructures in the system Al2O3/ZrO2
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DOI：
10.1007/bf00556032
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发表时间：
1970
影响因子：
4.5
通讯作者：
F. Schmid;D. Viechnicki
中科院分区：
文献类型：
--
作者：
F. Schmid;D. Viechnicki
用坩埚下降法在Al_2O_3/ZrO_2系统中制备了定向共晶组织。铸锭由细长的柱状晶粒或菌落组成。在菌落内部观察到由Al 2 O3基质包围的ZrO 2棒组成的棒型共晶显微结构。共晶点重新确定为63 mol % Al 2 O3/37.0 mol % ZrO 2和1870±5° C。Al 2 O3是共晶生长时首先形核的相。
Oriented eutectic microstructures have been produced in the system Al2O3/ZrO2using a Bridgman-type crystal-growing furnace. Ingots consisted of elongated columnar grains or colonies. Inside the colonies a rod-type eutectic microstructure consisting of rods of ZrO2surrounded by an Al2O3matrix was observed. The eutectic point was re-established at 63 mol % Al2O3/37.0 mol % ZrO2and 1870±5° C. Al2O3is the first phase to nucleate when eutectic growth occurs.