Reaction Synthesis of Nano-scale ZrC Particulates by Self-propagating High-temperature Synthesis from Al-Zr-C Powder Mixtures

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概要

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• Nano-scale ZrC particles were synthesized by self-propagating high-temperature synthesis (SHS) reaction from 30–40 mass% Al–Zr–C powder mixtures. The size of ZrC particles evidently reduced from ~160 nm with a nearly spherical shape in 30 mass% Al to ~60 nm with a tetragonal morphology in 40 mass% Al. The reaction mechanism to form ZrC was discussed by DTA and X-ray diffraction analysis. The results revealed that ZrAl3 metastable phase was initially formed by Al–Zr reaction, and then the formation of nano-scale ZrC grain was controlled by the dissolution of C into a Zr–Al melt and the precipitation from the melt. Al in the compact serves not only as a diluent inhibiting the ZrC particle from coarsening, but also as an intermediate reactant participating in the reaction process.

• 社団法人 日本鉄鋼協会の論文
• 2008-07-15

著者

• Huang Bin

  School Of Materials Science And Engineering Shanghai Jiaotong University

• Li Jianguo

  School Of Materials Science And Engineering Shanghai Jiaotong University

• SONG Mousheng

  School of Materials Science and Engineering, Shanghai JiaoTong University

• ZHANG Mengxian

  School of Materials Science and Engineering, Shanghai JiaoTong University

• Zhang Mengxian

  School Of Materials Science And Engineering Shanghai Jiaotong University

• Song Mousheng

  School Of Materials Science And Engineering Shanghai Jiaotong University

• Zhang Mengxian

  School Of Materials Sci. And Engineering Shanghai Jiao Tong Univ.

• Li Jianguo

  School Of Materials Sci. And Engineering Shanghai Jiao Tong Univ.

関連論文

• Effect of Denucleating Techniques on Undercooling of Co_2NiGa Alloys
• Reaction Synthesis of Nano-scale ZrC Particulates by Self-propagating High-temperature Synthesis from Al-Zr-C Powder Mixtures
• In situ Synthesis of Nano-sized ZrC and Its Formation Mechanism by Combustion Synthesis from Zr-C-Cu System
• Characterization of the Microstructure Evolution and Microsegregation in a Ni-Based Superalloy under Super-High Thermal Gradient Directional Solidification

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