A kind of amorphous alloy powder and its preparation method and application

Abstract

The invention discloses an amorphous alloy powder, which comprises zirconium-based amorphous alloy powder and metal oxide powder; the atomic percentage expression of alloy elements in the zirconium-based amorphous alloy powder is (Zr, Ti, Cu, Ni) a (Co,Nb,Mn) b (Si, Al, Be) c , 76≤a≤88, 5≤b≤16, 3≤c≤9; among them, the atomic percentage of Zr element is greater than 60%, the sum of atomic percentage of Ti and Cu element is greater than or equal to 8%, and the atomic percentage of Ni element is not greater than 5% , the atomic percentage of Nb element is greater than or equal to 4%, the atomic percentage of Be element is greater than or equal to 3%, and the atomic percentage of Si element is not greater than 2%. The invention also provides a plasma spraying process using amorphous alloy powder as a raw material. The process parameters are optimized, and the prepared amorphous alloy coating has high amorphous phase content, moderate porosity, strong anti-corrosion effect, and can be used as a heavy-duty coating. Anti-corrosion coating is used.

Description

technical field [0001] The invention belongs to the field of amorphous alloys, and in particular relates to an amorphous alloy powder for spraying, a preparation method thereof, and an application of the amorphous alloy powder. Background technique [0002] Amorphous alloy, referred to as amorphous alloy, is a substance with a microstructure of long-range disorder and short-range order. Amorphous alloys have similar high hardness and high viscosity coefficients to crystalline alloys, but the spatial arrangement of atoms and molecules does not show periodicity and translational symmetry, and the long-range order of the crystalline state is destroyed, only because the interatomic The intercorrelation effects of β give it short-range order in small intervals of a few atomic (or molecular) diameters. Due to the above-mentioned special microscopic morphology, the physical and chemical properties of amorphous alloys are better than the corresponding crystalline alloys. It has bec...

AI Technical Summary

Problems solved by technology

Although the known iron-based amorphous alloy coatings developed have inherently good quality, the iron-based amorphous alloy coatings also have good magnetic properties in practical applications, and are resistant to DC magnetic fields and high-frequency electromagnetic fields. Exhibits good shielding performance, which makes iron-based amorphous alloy coatings unusable in many products or equipment

At the same time, when applied in the field of heavy anti-corrosion, iron-based amorphous alloys have poor corrosion resistance and erosion resistance of corrosive media, and cannot replace existing anti-corrosion coatings or coatings.

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