纳米结构 WC-Al₂O₃-Al 硬质材料的力学性能与快速烧结。
Mechanical Properties and Rapid Sintering of Nanostructured WC-Al₂O₃-Al Hard Materials.
机构信息
Division of Advanced Materials Engineering, The Research Center of Hydrogen Fuel Cell, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea.
出版信息
J Nanosci Nanotechnol. 2021 Jul 1;21(7):3929-3933. doi: 10.1166/jnn.2021.19244.
Nanostructured WC-Al₂O₃-Al composites was sintered using rapid high-frequency induction heated sintering (HFIHS) and the mechanical properties such as hardness and fracture toughness with consolidation were investigated. The HFIHS method induced a very fast densification nearly at the level of theoretical density and successfully prohibited grain growth, resulting in nano-sized grains. The fracture toughness was improved due to the consolidation facilitated by adding Al to WC-Al₂O₃ matrix. The WC-Al₂O₃ composites added with 5 and 10 vol.% Al showed higher hardness and fracture toughness compared with that of WC-Al₂O₃.
采用快速高频感应加热烧结（HFIHS）烧结了纳米结构的 WC-Al₂O₃-Al 复合材料，并研究了其机械性能，如硬度和断裂韧性。HFIHS 法诱导了非常快的致密化，几乎达到理论密度，并成功地阻止了晶粒生长，形成了纳米晶粒。通过向 WC-Al₂O₃ 基体中添加 Al 来促进致密化，从而提高了断裂韧性。与 WC-Al₂O₃ 相比，添加了 5 和 10 体积%Al 的 WC-Al₂O₃ 复合材料表现出更高的硬度和断裂韧性。
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