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HomeMaterials Science ForumMaterials Science Forum Vol. 913Effects of Rare Earth Y Addition on...

Effects of Rare Earth Y Addition on Microstructural and Properties of Pure Copper

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Abstract:

The effects of rare earth Y addition on microstructure and properties of pure copper were investigated. Mechanical test, electrical test, oxidation resistance test, metalloscope, scanning electronic microscope (SEM) and X-ray difffraction (XRD) were performed to study the properties, microstructure and constitution. The results showed that both the hardness and antioxidant properties obviously increased with the increase of Y, confirmed the successful refinement role of Y. A small amount of Y (less than 0.5 wt.%) could improve the electrical conductivity of pure copper. When the Y content reached 0.2 wt.%, pure coppers obtained optimum electrical conductivity which is 96.8% IACS. However, over-added Y (>0.5 wt.%) resulted in second phase of Cu₇Y coarsening and non-homogeneous microstructures forming, which reduces the conductivity of copper. In addition, Y can effectively purify the organization of molten copper.

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Materials Science Forum (Volume 913)

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862-869

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https://doi.org/10.4028/www.scientific.net/MSF.913.862

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February 2018

Authors:

Huan Chao Liu, Xin Ying Teng*, Wei Bing Wu, Zhen Xiao, Xiang Wei Wu, Jin Feng Leng

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Electrical Conductivity, Microstructure, Oxidation Behaviour, Pure Copper, Yttrium

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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