
低于1000°C的 CuO和Al <sub>2</sub> O <sub>3</sub>之间的相互作用以及铝酸铜的反应性及其对使用Cu–Al ...
CuAl 2 O 4的分解在贫氧环境中,取决于氧气的分压,可能导致形成α-氧化铝和γ-氧化铝。 鉴于α形式在大约900°C(CuO / Cu 2 O对的典型工作温度)附近不会与CuO反应,因此该观察结果可用于从CuAl 2 O 4中部分再生CuO ,用于氧气的储存和生产通
Enhanced interfacial bonding and mechanical properties of CuO…
2025年2月1日 · It has been demonstrated that the interfacial in situ reaction between CuO and Al effectively promotes the formation of Al 2 O 3 nanolayers at the GO-Al interface, enhances the interfacial bonding strength, and facilitates load transfer between GO and the Al matrix.
天津大学《Acta》:Al-CuO复合材料高强韧化机制起源! - 知乎
同样的烧结工艺下,在对照样品Al-4Cu合金中形成了θ相和CuAl相。 这表明 铝热反应 过程中强烈的热效应促进了元素向晶内扩散,并揭露了扩散辅助的Al2O3形核机制。
制备Al2O3/Cu复合材料中CuO-Al体系的化学反应
摘要: 对CuO-Al粉末预制块经不同温度下反应,测试其温度随时间的变化曲线,利用X射线衍射仪对其反应后的试样进行物相分析,得出产生热爆的反应温度及不同温度下的反应产物。 结果表明,CuO-Al体系反应随介质温度升高,可分为3个不同阶段,温度小于1 200 K ...
Alumina supported copper oxide nanoparticles (CuO/Al
2023年2月1日 · CuO/Al 2 O 3 nanocatalysts fabricated via impregnation technique are investigated for their electrocatalytic potential towards hydrazine electro-oxidation in alkaline media. Impregnation method is adapted owing to its simplicity, user friendliness, cost effectiveness and conventional apparatus.
《Acta Materialia》:原位晶内强化实现Al-CuO复合材料加工硬化 …
2023年11月26日 · 来自天津大学、天津大学-新加坡国立大学福州联合学院的学者报告了对 Al-5 wt.% CuO(Al-5CuO)复合材料中加工硬化和 应变局部化 的系统研究,其中原位致密粒内纳米级 Al2O3发挥了强度-电导率协同作用。
Thermodynamic stability of solid phases in the system Cu–O–Al
2016年10月19日 · CuAl 2 O 4 is used as a catalyst for the hydrogen production and for the catalytic conversion of CO, as a stabilizer of Cu-laden sludges, in the hydrogenolysis of glycerol from biomass, and for CO 2 capturing in the chemical-looping combustion [11].
Revealing the strengthening and toughening mechanisms of Al-CuO ...
2021年2月1日 · Due to native deficiency of the interfacial mismatch between Al 2 O 3 and Al-melt, as well as micron-Al 2 O 3 segregation at matrix grain boundaries (GBs), achieving both high strength and fracture toughness has been the long-lasting challenge for Al-CuO composite fabricated by conventional casting.
The interaction between CuO and Al - RSC Publishing
2016年11月22日 · However, the reported temperatures at which CuAl 2 O 4 forms are inconsistent so far. This work sets out to investigate the interaction between CuO and different aluminas (and precursors), which are commonly used as support materials, at temperatures between 700 and 1000 °C, as well as some chemical properties of …
Al-Modified CuO/Cu2O for High-Temperature ... - ACS Publications
2021年11月22日 · The Al element can modify the CuO particle surface in the form of CuAl 2 O 4, which separates the copper oxide particles from each other during redox cycles to avoid agglomeration and participates in the redox reaction. Through DFT analysis, the introduction of Al is found to increase the formation energy of copper vacancies in copper oxides ...
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