Copper-iron alloys provide high tensile strength, good corrosion resistance, and high thermal conductivity. They also exhibit high ferromagnetism, making them highly desirable. However, these alloys are difficult to produce in large quantities. The present invention is aimed at achieving industrial production of these alloys. Using a unique method, iron-copper alloys can be produced on an industrial scale.
The proposed method consists of two main steps. First, the alloy is deposited onto a nickel foam substrate. Second, it is cooled and solidified. During this process, a metallic oxide layer is formed to protect the core from corrosion. After cooling and solidifying, the wire is rolled at a reduction ratio of 85%. Afterward, the wire is cold rolled to the final diameter of 0.25.
The alloy is then analyzed for morphology, distribution of chromium, and chemical activity. SEM and XPS spectroscopy are employed. The electron energy loss spectroscopy demonstrates a broad Cu 2p3/2 peak with a strong satellite. Fe3+ shows a small satellite near 720 eV. In addition, Ni fingerprint indicates a strong satellite.
The alloy is further treated in a series of treatments, including cooling, annealing, and aging. The aging treatment was carried out at 500deg C for 150 minutes. This is a high-temperature aging treatment, which is suitable for studying the wear behavior of grey cast iron.
Optical emission spectra of the sample indicate that copper and iron are the major constituents. However, a low oxygen content is observed in the pre-alloyed powders.
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