Micro-nano oxide particle enhanced nickel base alloy powder as well as preparation method thereof

Abstract

The invention relates to micro-nano oxide particle enhanced nickel base alloy powder as well as a preparation method thereof. The micro-nano oxide particle enhanced nickel base alloy powder is characterized in that the micro-nano oxide particle enhanced nickel base alloy powder contains matrix alloy powder and micro-nano oxide hard particles as well as a binder. The micro-nano oxide particle enhanced nickel base alloy powder is prepared from the following components in percent by weight: 50-98% of the matrix alloy powder, 1-45% of combined mixture powder of one or more than two out of micro-nano Al2O3 or micro-nano Cr3C2 and micro-nano ZrO2, and 1-5% of the binder which are prepared as combined powder. The preparation process comprises the following steps: preparation of the matrix alloy powder; addition of the micro-nano particle particles; addition of the binder; stirring and ball-milling; combination of powder; drying; crushing; sieving. The micro-nano oxide particle enhanced alloy powder provided by the invention not only has higher hardness and tenacity, but also has excellent wear resistance and corrosion resistance, so that the powder is particularly applicable to laser-cladding parts in high impact and high-wear-resisting working conditions. The powder can effectively prevent segregation in the storage, transportation and using processes due to wide difference of the components in proportion.

Description

technical field [0001] The invention belongs to the technical field of nickel-based alloys, and relates to an alloy powder and a preparation method thereof, in particular to a nickel-based alloy powder reinforced with micronano oxide particles and a preparation method thereof, the micronano oxide particle reinforced nickel The base alloy powder is suitable for laser cladding parts with high impact and high wear resistance. Background technique [0002] In modern daily life and industrial production, wear and corrosion of metal materials will appear in various fields. It is one of the two main ways to damage mechanical parts and engineering components. Corrosion will lead to a large amount of consumption of mechanical parts, while wear It is one of the important reasons leading to the failure of mechanical parts. While they consume a lot of metal materials, they also waste a lot of resources, accounting for a very large proportion of economic losses. [0003] The failure of...

AI Technical Summary

Problems solved by technology

The added hard particles are larger and different in density from the matrix metal, and the distribution of the particles in the cladding layer is often uneven, usually showing a gradient distribution; the wettability, stability, and expansion coefficient of the added particle material and the matrix and chemical reactivity all lead to the inhomogeneity of the structure and performance of the cladding layer

Moreover, the prepared combined powder is prone to segregation during storage, transportation and use due to the large difference in the specific gravity of each component.

Commercial market supply cannot be carried out, and there is no commercial sale of micro-nano particle-enhanced laser cladding special powder in the market

Due to the above reasons, there is no special combination powder for laser cladding, which restricts the application of laser cladding in the field of high wear-resistant conditions.