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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Enhancing the oxidation resistance and electrical conductivity of alumina reinforced copper-based composites via introducing Ag and annealing treatment
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Enhancing the oxidation resistance and electrical conductivity of alumina reinforced copper-based composites via introducing Ag and annealing treatment

机译：通过引入Ag和退火处理，提高氧化铝增强铜基复合材料的氧化抗性和导电性

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摘要

Alumina-reinforced copper matrix composites with Ag addition were fabricated by internal oxidation. The effects of slight Ag addition (0.92 at%) on electrical conductivity (EC) and oxidation resistance of internal-oxidized copper alumina composites were investigated. The annealing treatments were carried out to promote the diffusion of Ag in copper matrix. Ag was observed to segregate at Cu/Al2O3 interface after being annealed, which may lead to the lower interfacial energy between Al2O3 and copper matrix. The EC increased more than 7.8% after Ag was added. Moreover, annealing Cu-Al2O3-Ag composite at 500 degrees C for 10 h results in the improvements of both oxidation resistance and EC. The initial oxidation temperature increased from 169 degrees C to 189 degrees C and the EC increased from 81.98 +/- 0.56% International Annealed Copper Standard (IACS) to 88.19 +/- 0.27% IACS. While the EC of Cu-Al2O3 composites always remained similar to 76% IACS which suggests that the annealing treatment has insignificant impacts on EC of Cu-Al2O3 without Ag. (C) 2019 Elsevier B.V. All rights reserved.
机译：有Ag添加氧化铝强化的铜基复合材料内氧化来制造。轻微的Ag添加（0.92原子％）上电导率（EC）和内部氧化的铜氧化铝复合体中耐氧化性的效果进行了研究。该退火处理进行了促进Ag的铜基质的扩散。的Ag，观察到在铜/氧化铝界面退火后偏析，这可导致Al2O3和铜基质之间的下界面能。加入银后的EC增长超过7.8％。此外，在500℃下退火的Cu-Al2O3的银复合10周小时的结果在这两个耐氧化性和EC的改进。初始氧化温度从169摄氏度提高到189摄氏度和EC从81.98增加+/- 0.56％国际退火铜标准（IACS）到88.19 +/- 0.27％IACS。这暗示而Cu-Al2O3的的复合材料EC始终保持类似于76％IACS，退火处理对铜的Al2O3 EC微不足道的影响不含Ag。 （c）2019 Elsevier B.v.保留所有权利。

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