Effect of Rare Earth Ce on the Inner Oxide Layer and Properties of Copper-Chromium-Titanium Alloy

Rongqun Zhang; Xiaohong Chen

doi:10.6919/ICJE.202504_11(4).0009

Authors

Rongqun Zhang
Xiaohong Chen

DOI:

https://doi.org/10.6919/ICJE.202504_11(4).0009

Keywords:

Internal Oxidation; Conductivity; Hardness; Cr2O3 Composite Material; Rare Earth.

Abstract

Cu-0.6Cr-0.06Ti and Cu-0.6cr-0.06Ti-0.08Ce alloys were prepared by vacuum high frequency induction melting technology, and the heat treatment processes of internal oxidation, cold rolling and aging were carried out to prepare Cr₂O₃ composites with high conductivity. The microstructure morphology and properties were analyzed by means of metallographic microscope under different processes. The results show that the conductivity, hardness and inner oxide thickness increase with the increase of internal oxidation time. The addition of a small amount of Ce can promote the internal oxidation process of Cu-Cr-Ti alloy. After adding 0.08%Ce to Cu-Cr-Ti alloy with oxygen content of 0.8%, internal oxidation for 8h, internal oxidation temperature of 950°C, the oxide layer depth can reach 796μm, and the conductivity and hardness can be increased to 93.2%IACS, 93.4HV. The main innovation of this experiment is the addition of rare earth elements in the alloy, through the comparison with the non-added rare earth alloy, it is concluded that the rare earth element Ce can improve the hardness of the alloy.

Downloads

Download data is not yet available.

References

[1] Guo X, Zhou Y, Song K, et al. Microstructure and properties of Cu-Mg alloy treated by internal oxidation[J]. Materials Science and Technology, 2017, 34(6): 648-653.

[2] Ploner K, Nezhad P D K, Watschinger M, et al. Steering the methanol steam reforming performance of Cu/ZrO2 catalysts by modification of the Cu-ZrO2 interface dimensions resulting from Cu loading variation[J]. Applied Catalysis a General, 2021, 623(1): 118279.

[3] Zhao Z, **ao Z, Li Z, et al. Characterization of dispersion strengthened copper alloy prepared by internal oxidation combined with mechanical alloying[J]. Journal of Materials Engineering and Performance, 2017, 26: 5641-5647.

[4] Zhao Z, Xiao Z, Li Z, et al. Characterization of dispersion strengthened copper alloy prepared by internal oxidation combined with mechanical alloying[J]. Journal of Materials Engineering and Performance, 2017, 26: 5641-5647.

[5] Fukushima J, Takizawa H. Enhanced reduction of copper oxides via internal heating, selective heating, and cleavage of Cu–O bond by microwave magnetic-field irradiation[J]. Materials Chemistry and Physics, 2016, 172: 47-53.