High-entropy alloy surface carburizing modification method
A technology of high-entropy alloy and surface carburizing, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc. Diffusion rate of elements and other issues to achieve the effect of increasing surface hardness, improving high temperature oxidation resistance, and good bonding
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[0034] A method for carburizing and modifying the surface of a high-entropy alloy according to the present invention. The composition of the high-entropy alloy is HfZrTiTa, and the atomic molar ratio of each component Hf, Zr, Ti, and Ta is 1:1:1:1. When preparing the high-entropy alloy, the purity of the selected raw materials of Hf, Zr, Ti and Ta is not less than 99%, preferably 99%-99.99%. The selected carburizing agent is activated carbon powder of analytical purity and above.
[0035] A method for surface carburizing modification of a high-entropy alloy of the present invention, comprising the steps of:
[0036](1) Pretreatment of the HfZrTiTa high-entropy alloy raw material: the sample was cut into a rod-shaped sample of 1×1×15 mm by wire cutting, and the surface of the rod-shaped sample was polished with sandpaper until the metallic luster was exposed and the surface was smooth. The rod-shaped samples after grinding were ultrasonically cleaned with alcohol, and then dri...
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