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A rare earth zinc-aluminum-nickel-titanium alloy wire material for thermal spraying and its preparation method and application

A nickel-titanium alloy and thermal spraying technology, which is applied in the direction of coating, molten spraying, metal material coating process, etc., can solve the problems that cannot completely solve the problem of pitting corrosion of steel structures, achieve good cathodic protection and avoid pitting corrosion , good surface quality

Active Publication Date: 2021-10-15
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, some studies in the literature suggest that rare earth aluminum coatings cannot completely solve the pitting corrosion problem of steel structures (Liu Yi, et al. Corrosion behavior of aluminum rare earth coatings in salt spray accelerated tests[J]. Rare metal materials and engineering (S2 ), 2012: 327-330.)

Method used

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  • A rare earth zinc-aluminum-nickel-titanium alloy wire material for thermal spraying and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 A rare earth zinc-aluminum-nickel-titanium alloy wire

[0043] The composition and mass percentage of the rare earth zinc-aluminum-nickel-titanium alloy wire described in this embodiment are shown in Table 1.

[0044] The preparation of the rare earth zinc-aluminum-nickel-titanium alloy wire by a mixed melting method comprises the following steps:

[0045] The preparation of I.ZnTi3 master alloy

[0046] Zn and Ti carry out batching according to mass percent Zn: Ti=97%: 3%, wherein Zn adopts No. 0 zinc ingot, and Ti adopts the flaky titanium plate of rolling thickness 0.5mm; No. 0 zinc ingot and flaky titanium plate are transferred Put it into a hollow induction furnace for melting, the melting temperature is 620-660°C, keep warm for 2.0-2.5h, stir well and then cast, and prepare ZnTi3 master alloy;

[0047] II. Preparation of Rare Earth ZnAlNiTi Alloy Blank

[0048] Prepare each raw material according to the following mass percentages:

[0049] ZnTi3 mas...

Embodiment 2

[0053] Example 2 A rare earth zinc-aluminum-nickel-titanium alloy wire

[0054] The composition and mass percentage of the rare earth zinc-aluminum-nickel-titanium alloy wire described in this embodiment are shown in Table 1.

[0055] The rare earth zinc-aluminum-nickel-titanium alloy wire was prepared according to the same method and steps as in Example 1, the difference being that:

[0056] In step II, the mass percent of each raw material is when getting the raw material ready:

[0057] Prepared in step I ZnTi3 master alloy 30%, copper-nickel-zinc alloy (thickness 0.5mm, flake, trade mark C7701 (CuNi19Zn25)) 25%, AlMg5 (thickness 0.5mm, flake) 20%, La: 0.2%, Ce : 0.4%, Al: balance.

Embodiment 3

[0058] Example 3 A rare earth zinc-aluminum-nickel-titanium alloy wire

[0059] The composition and mass percentage of the rare earth zinc-aluminum-nickel-titanium alloy wire described in this embodiment are shown in Table 1.

[0060] The rare earth zinc-aluminum-nickel-titanium alloy wire was prepared according to the same method and steps as in Example 1, the difference being that:

[0061] In step II, the mass percent of each raw material is when getting the raw material ready:

[0062] Prepared in step I ZnTi3 master alloy 32%, copper-nickel-zinc alloy (thickness 0.5mm, flake, grade C7701 (CuNi19Zn25)) 27%, AlMg5 (thickness 0.5mm, flake) 22%, La: 0.4%, Ce : 0.3%, Al: balance.

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Abstract

The invention provides a rare earth zinc-aluminum-nickel-titanium alloy wire material for thermal spraying, a preparation method and application thereof. The rare earth zinc aluminum nickel titanium alloy wire material for thermal spraying includes Al, Zn, Ti, Ni, Mg, Cu and rare earth metals, and the mass percentage content of each element is: Zn: 32.66-39.73%, Ti: 0.84-1.02% , Ni: 4.18‑5.13%, Mg: 0.9‑1.1%, Cu: 12.32‑15.12%, rare earth metals: 0.3% to 0.8%; Al: balance; the rare earth metals are selected from La (lanthanum) and Ce (cerium ) in any one or two in any proportion. The present invention also provides a ribbed or non-ribbed steel bar with an alloy coating. The alloy coating is formed by thermal spraying the rare earth zinc-aluminum-nickel-titanium alloy wire material of the present invention on the surface of the steel bar. The alloy The thickness of the coating is 30‑300 μm.

Description

technical field [0001] The invention belongs to the technical field of alloys and thermal spraying materials, and in particular relates to a rare earth alloy wire material for thermal spraying and its preparation method and application. Background technique [0002] Thermal spraying technology is to heat and accelerate a certain composition of linear or powdery materials through heat sources or power sources such as flames, electric arcs, plasmas, and compressed gases to form a high-speed particle flow of melting, semi-melting or unmelting solids. A method of spraying onto a substrate and depositing it continuously to form a coating. Through thermal spraying, material protective coatings and functional coatings can be prepared on the surface of the material, and the surface properties that the base material does not have but are necessary for the service environment, such as wear resistance, corrosion resistance, high temperature resistance and heat insulation, etc. can be g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C23C4/08C23C4/12C23C4/131C22C1/03C22F1/053
CPCC22C1/026C22C1/03C22C21/10C22F1/053C23C4/08C23C4/12
Inventor 王涛祝和权杜存山张恒贾恒琼李海燕吴韶亮魏曌王玮杜玮伊钟毓南阳张喆
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI