Effects of B4C particles on Al-TiO2 reaction in Al matrix composite

IF 3.2 2区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Nuclear Materials Pub Date : 2025-05-01 Epub Date: 2025-03-23 DOI:10.1016/j.jnucmat.2025.155776

B.M. Shi , Y. Liu , S.Z. Zhu , Y.N. Zan , Q.Z. Wang , B.L. Xiao , Z.Y. Ma

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Abstract

In this study, composites were produced using powder metallurgy with Al-TiO₂ and Al-TiO₂-B₄C as raw materials, and the impact of B₄C on the reaction between Al and TiO₂ was investigated. Hot-pressing was employed at temperatures of 580 °C, 600 °C, 620 °C, and 640 °C to fabricate the composites, followed by analysis of their microstructure and mechanical properties. The results revealed that at a temperature of 580 °C, Al₃Ti and Al₂O₃ were formed in the Al-TiO₂ composite system, and when the hot-pressing temperature reached 620 °C, all TiO₂ within the matrix was completely consumed in the reaction with Al. In contrast, for the Al-TiO₂-B₄C composite system, B₄C exhibited a noticeable inhibiting effect on the reaction. At a hot-pressing temperature of 580 °C, no discernible reaction occurred between TiO₂ and the matrix; while at temperatures of 600 °C, 620 °C, and 640 °C, only a small amount of Al₃Ti and Al₂O₃ appeared in the matrix. Consequently, the strength of composites fabricated by Al-TiO₂ increased with increasing hot-pressing temperature; whereas for composites made from Al-TiO₂-B₄C hot-pressed at different temperatures showed similar strengths.

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B4C颗粒对Al基复合材料中Al- tio2反应的影响

本研究以Al-TiO2和Al-TiO2-B4C为原料，采用粉末冶金法制备了复合材料，并考察了B4C对Al与TiO2反应的影响。在580°C、600°C、620°C和640°C的温度下热压制备复合材料，并对其进行微观组织和力学性能分析。结果表明：在580℃时，Al-TiO2复合体系中生成了Al3Ti和Al2O3，当热压温度达到620℃时，基体内的TiO2在与Al的反应中被完全消耗。而对于Al-TiO2-B4C复合体系，B4C对反应有明显的抑制作用。在580℃的热压温度下，TiO2与基体未发生明显的反应；而在600℃、620℃和640℃时，基体中只出现少量Al3Ti和Al2O3。因此，Al-TiO2复合材料的强度随热压温度的升高而升高；而Al-TiO2-B4C复合材料在不同温度下热压得到的强度相似。

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来源期刊

Journal of Nuclear Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

25.80%

发文量

601

审稿时长

63 days

期刊介绍： The Journal of Nuclear Materials publishes high quality papers in materials research for nuclear applications, primarily fission reactors, fusion reactors, and similar environments including radiation areas of charged particle accelerators. Both original research and critical review papers covering experimental, theoretical, and computational aspects of either fundamental or applied nature are welcome. The breadth of the field is such that a wide range of processes and properties in the field of materials science and engineering is of interest to the readership, spanning atom-scale processes, microstructures, thermodynamics, mechanical properties, physical properties, and corrosion, for example. Topics covered by JNM Fission reactor materials, including fuels, cladding, core structures, pressure vessels, coolant interactions with materials, moderator and control components, fission product behavior. Materials aspects of the entire fuel cycle. Materials aspects of the actinides and their compounds. Performance of nuclear waste materials; materials aspects of the immobilization of wastes. Fusion reactor materials, including first walls, blankets, insulators and magnets. Neutron and charged particle radiation effects in materials, including defects, transmutations, microstructures, phase changes and macroscopic properties. Interaction of plasmas, ion beams, electron beams and electromagnetic radiation with materials relevant to nuclear systems.