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Corrosion-resistant cladding layer powder material and preparation method of cladding layer

A technology of powder material and cladding layer, which is applied in the field of metal corrosion-resistant surface treatment, can solve the problems of further improvement of corrosion resistance and poor coordination, and achieve the improvement of surface hardness and chlorine salt corrosion resistance, small quantity, and dilution low effect

Active Publication Date: 2022-06-24
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, such as the poor coordination between the structure to be clad and the cladding layer, and the corrosion resistance needs to be further improved, so as to provide a corrosion-resistant cladding layer powder material , Preparation method of cladding layer

Method used

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  • Corrosion-resistant cladding layer powder material and preparation method of cladding layer
  • Corrosion-resistant cladding layer powder material and preparation method of cladding layer
  • Corrosion-resistant cladding layer powder material and preparation method of cladding layer

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Preparation of Cladding Layer Resistant to Chlorine Salt Corrosion on the Surface of Conventional Grade Ⅰ Steel Reinforcing Bars

[0046] Step 1. Composition design and preparation of powder material of cladding layer

[0047] (1) The mass percentage of each component in the powder material of the cladding layer is as follows:

[0048] Cr: 10%; Ti: 9%; Cu: 6.8%; Ni: 1.5%; Zn: 1.7%; Fe: the remainder; the total amount of other impurity elements is required to be ≤0.15%; the particle size of the powder material is 250-500 mesh.

[0049] (2) Preparation of powder material for cladding layer

[0050] The powder material in step (1) is placed in a planetary ball mill for ball milling and mixing. The ball mill speed is 175r / min, and the ball milling time is 12h. After the ball milling is completed, the powder material of the cladding layer is obtained by sieving and the particle size is in the range of 250-500 mesh.

[0051] Step 2, the preparation method of chloride corr...

Embodiment 2

[0058] Compared with Example 1, the difference is that the mass percentage of each component in the powder material of the cladding layer is as follows:

[0059] Cr: 5%; Ti: 10%; Cu: 6.8%; Ni: 1.5%; Zn: 1.7%; Fe: the remainder; the total amount of other impurity elements is required to be ≤0.15%; the particle size of the powder material is 250-500 mesh.

Embodiment 3

[0061] Compared with Example 1, the difference is that the mass percentage of each component in the powder material of the cladding layer is as follows:

[0062] Cr: 8%; Ti: 8%; Cu: 6.8%; Ni: 1.5%; Zn: 1.7%; Fe: the remainder; the total amount of other impurity elements is required to be ≤0.15%; the particle size of the powder material is 250-500 mesh.

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Abstract

The invention belongs to the technical field of metal corrosion-resistant surface treatment, and particularly relates to a corrosion-resistant cladding layer powder material and a preparation method of a cladding layer. The corrosion-resistant cladding layer powder material provided by the invention comprises the following components in percentage by mass: 5-10% of Cr; 8 to 10 percent of Ti; 6 to 7 percent of Cu; ni: 1-2%; 1 to 2 percent of Zn; and the balance of iron and other inevitable impurities. A cladding layer prepared from the corrosion-resistant cladding layer powder material can effectively solve the problem of corrosion of reinforcing steel bars in a reinforced concrete structure in a chlorine salt environment in severe environments such as seawater and plateau, and on the basis of ensuring deformation coordination of a to-be-cladded structural part and the cladding layer and on the premise of not influencing the mechanical property of the structural part, the corrosion-resistant cladding layer powder material can be used for preparing the corrosion-resistant cladding layer powder material. The chlorine salt corrosion resistance of the steel bar is greatly improved, the safety, reliability and durability of a reinforced concrete structure are guaranteed, and the purposes of reducing cost and increasing efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion-resistant surface treatment, and particularly relates to a corrosion-resistant cladding layer powder material and a preparation method of the cladding layer. Background technique [0002] Due to the cost advantage, reinforced concrete structures are widely used in large-scale projects such as harbor terminals, offshore platforms, bridges, tunnels, and dams. The special harsh climate environment in plateau areas and oceans has produced many adverse effects on concrete engineering structures, which greatly tests the durability of concrete. [0003] The main factors affecting the durability of reinforced concrete are: steel corrosion, freeze-thaw cycle damage, erosion damage, salt crystallization, carbonization, and stray current. Rust is the number one cause of concrete failure more severe than freezing and erosion damage. [0004] To prevent the corrosion of concrete reinforcement, the ex...

Claims

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Application Information

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IPC IPC(8): C22C38/42C22C38/50C23C24/10
CPCC22C38/50C22C38/42C23C24/106
Inventor 高远邹祖冰孙勇李鹏马哲王方政陈子文
Owner CHINA THREE GORGES CORPORATION
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