In situ synthesis of Al2</sub>O3</sub> particulate-reinforced Al matrix composite by low temperature sintering

H. Huo; K. D. Woo

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In situ synthesis of Al2O3 particulate-reinforced Al matrix composite by low temperature sintering

机译：低温烧结原位合成Al2 O3 颗粒增强Al基复合材料

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The powder mixture of Al-10 wt.% SiO2 was selected as a research system. Compared with an as-mixed powder, the phase structure and microstructure of an as-milled powder was investigated, and the temperature of the displacement reaction in the two kinds of powder was determined by thermal analysis. The preforms of the two kinds of powder were sintered based on the result of thermal analysis. The results indicate that the particle size of the Al-SiO2 powder was refined greatly after 4 h of high energy ball milling, and diffusion couples were formed due to SiO2 particles embedded in the Al matrix. The displacement reaction did not occur between Al and SiO2 for the as-mixed powder, while it occurred in the range of 560–680°C for the as-milled powder. For the as-milled powder, an aluminum matrix composite reinforced with Al2O3 particles, which were homogeneously distributed in the Al matrix, can be fabricated by sintering at 640°C for 2 h.

机译：选择Al-10 wt。％SiO2 的粉末混合物作为研究体系。与混合粉末比较，研究了研磨粉末的相结构和微观结构，并通过热分析确定了两种粉末中的置换反应温度。根据热分析结果，对两种粉末的预型件进行了烧结。结果表明，高能球磨4 h后，Al-SiO2 粉末的粒径得到了极大的细化，并且由于SiO2 颗粒嵌入Al基体中而形成了扩散对。混合后的粉末在Al和SiO2之间没有发生置换反应，而研磨后的粉末在560–680°C的温度范围内发生了置换反应。对于研磨后的粉末，可以通过在640°C下烧结2 h来制备均匀分布在Al基体中的Al2 O3 颗粒增强的铝基复合材料。

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《Journal of Materials Science》 |2006年第11期|3249-3253|共5页
作者
H. Huo; K. D. Woo;
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Division of Advanced Materials Engineering Automobile Hi-Technology Research Institute (AHTRI) Chonbuk National UniversityCollege of Life and Chemistry Science Shenyang Normal University;

Division of Advanced Materials Engineering Automobile Hi-Technology Research Institute (AHTRI) Chonbuk National University;

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1. In situ synthesis of Al2O3 particulate-reinforced Al matrix composite by low temperature sintering [J] . Huo H, Woo KD Journal of Materials Science . 2006,第11期

机译：低温烧结原位合成Al2O3颗粒增强Al基复合材料
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3. Low-temperature sintering of SiC reticulated porous ceramics with MgO–Al2O3–SiO2 additives as sintering aids [J] . Xiumin Yao, Shouhong Tan, Xiangyu Zhang, Journal of Materials Science . 2007,第13期

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6. Mechanism of Reduced Sintering Temperature of Al2O3–ZrO2 Nanocomposites Obtained by Microwave Hydrothermal Synthesis [O] . Iwona Koltsov, Julita Smalc-Koziorowska, Marta Prześniak-Welenc, 2018

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In situ synthesis of Al2O3 particulate-reinforced Al matrix composite by low temperature sintering

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