Single-phase solid solution Cu-9Ni-6Sn/iron-based surface composite material and preparation method thereof

Abstract

The invention discloses a method for preparing a single-phase solid solution Cu-9Ni-6Sn / iron-based surface composite material, which comprises the following steps of: using uniformly mixed Cu-10Sn powder, Ni powder and Cu powder as powder feeding raw materials, and preparing a single-phase solid solution Cu-9Ni-6Sn coating on the surface of a matrix material through a laser cladding method. The weight ratio of the Cu-10Sn powder, the Ni powder and the Cu powder is (40-60):9: (31-51), and the matrix material is an iron-based matrix material. The laser processing parameters are as follows: the laser power is 1800W-2800W, and the scanning speed is 1.5-2.5mm / s. According to the preparation method, the prepared composite material has strong bonding force with the surface of the metal matrix, which is not easy to fall off, and has excellent corrosion resistance and wear resistance. The method provided by the invention has an extremely obvious effect on the surface modification of steel materials, and widens the application fields of steel.

Description

technical field [0001] The invention belongs to the field of material surface engineering, and relates to a single-phase solid solution Cu-9Ni-6Sn / iron-based surface composite material and a preparation method thereof. Background technique [0002] Cu-Ni-Sn alloy is a copper alloy material with high strength, high toughness and excellent wear resistance and corrosion resistance. Its strength is equivalent to that of high-strength steel and beryllium copper. Performance and wear resistance under high load conditions are superior to beryllium copper and aluminum bronze. Therefore, with the continuous recognition of the excellent properties of the alloy, the alloy has gradually attracted the attention of scholars. [0003] At present, there are difficulties in the research of Cu-Ni-Sn alloys: Although the alloys prepared by traditional melting and casting methods can obtain single-phase solid solution α-Cu through high-temperature solution treatment, the micron-sized Sn-rich γ...

AI Technical Summary

Problems solved by technology

The commonly used method is to use powder metallurgy and spray molding to obtain bulk single-phase solid solution Cu-Ni-Sn, but the price is high, the current size of the product is limited, and they are all bulk materials, which significantly limits its practical application.

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