Effect of C and Hf Contents on the Interface Reactions and Wettability between a Ni3Al-Based Superalloy and Ceramic Mould Material
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2016年第2期
论文作者：Xiaoyan Chen Yizhou Zhou Tao Jin Xiaofeng Sun
文章页码：177 - 181
摘 要：The influence of active elements C and Hf on the interface reactions and wettability between a Ni3Albased superalloy and the ceramic mould material was studied by using a sessile drop experiment.The microstructure of the alloy interface was investigated by scanning electron microscopy analysis and the phase identification was performed by X-ray diffraction analysis.The results show that interface reactions occur as C and Hf contents reach a critical value.The critical values for C and Hf to cause interface reactions are 0.12 wt%and 1.17 wt%,respectively.The reaction products contain HfO2 and 9Al2O3-Cr2O3.Adsorptions of Hf and interface reactions improve the wettability obviously.
Xiaoyan Chen，Yizhou Zhou，Tao Jin，Xiaofeng Sun
Institute of Metal Research, Chinese Academy of Sciences
摘 要：The influence of active elements C and Hf on the interface reactions and wettability between a Ni3Albased superalloy and the ceramic mould material was studied by using a sessile drop experiment.The microstructure of the alloy interface was investigated by scanning electron microscopy analysis and the phase identification was performed by X-ray diffraction analysis.The results show that interface reactions occur as C and Hf contents reach a critical value.The critical values for C and Hf to cause interface reactions are 0.12 wt%and 1.17 wt%,respectively.The reaction products contain HfO2 and 9Al2O3-Cr2O3.Adsorptions of Hf and interface reactions improve the wettability obviously.
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