Redetermination of the Eutectic Composition of the Ni-P Binary Alloy
Redetermination of the Eutectic Composition of the Ni-P Binary Alloy
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Ni-P二元合金共晶成分的重新测定
DOI：
10.1007/s11669-010-9792-7
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发表时间：
2010
影响因子：
1.4
通讯作者：
中科院分区：
文献类型：
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作者：
合成了一系列Ni-P合金（富ni）并进行了固化。发现Ni-19.0 at的凝固组织。长期以来被认为是共晶成分的%P合金除含有棒状共晶外，还含有许多初生相枝晶。而Ni-19.6 at试样中只出现棒状共晶组织。%P，并且该合金在所研究的所有成分中显示出最低的熔点。结果表明，Ni-P体系富ni部分的实际共晶成分为Ni-19.6 at.%P。差示扫描量热分析确定共晶温度约为1163 K。
A series of Ni-P alloys (Ni-rich) have been synthesized and solidified. It is found that the solidification microstructure of the Ni-19.0 at.%P alloy that has long been regarded as the eutectic composition contains many primary phase dendrites besides rod eutectics. In contrast, only rod eutectic microstructure appears in the samples of Ni-19.6 at.%P, and this alloy shows the lowest end temperature of melting among all the compositions investigated. The results indicate that the actual eutectic composition at the Ni-rich part of the Ni-P system is Ni-19.6 at.%P. The eutectic temperature is determined to be about 1163 K by the differential scanning calorimetry analysis.