Low-temperature oxidation behaviors of Cu-15Ni-8Sn alloy in different aging conditions

被引：1
作者：
Gao, Yi [1 ]
Zhang, Ziyan [1 ]
Cheng, Jinjuan [2 ]
Liu, Chaoqiang [1 ]
Zhou, Kechao [1 ]
Gan, Xueping [1 ]
机构：
[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[2] Univ South China, Sch Math & Phys, Hengyang 421001, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2024年 / 218卷
基金：
中国国家自然科学基金;
关键词：
Cu-Ni-Sn alloy; Low-temperature oxidation; Aging condition; Oxidation products; NI-SN ALLOYS; CU-BE ALLOY; COPPER; MICROSTRUCTURE; RESISTANCE;
D O I：
10.1016/j.matchar.2024.114519
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cu-15Ni-8Sn (wt%) alloy has been widely used in engineering applications due to its excellent mechanical strength, wear, and corrosion resistance. However, low-temperature oxidation (LTO) poses a significant challenge, restricting its further application and longevity. In this study, the low-temperature oxidation behavior of the Cu-15Ni-8Sn alloy under different aging condition was investigated using multi-scale characterization by SEM and TEM. The characterization results reveal the oxide films of the aged sample contain tri-layers at low temperature, the outermost layer is dominated by CuO and Cu2O, the middle oxide layer contains of Cu2O, NiO, SnO2 and SnO, and the inner oxide layer is composed of NiO and SnO2. In addition, the as-quenched sample has superior oxidation resistance compared to the aged samples, and the oxidation resistance of the aged samples decreases with the increase of aging time. That is, there is a trade-off between hardness and oxidation resistance in aged Cu-15Ni-8Sn alloys. Therefore, these findings provided a way to adjust the aging parameter based on specific service conditions.
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页数：10
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