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Iron-based amorphous-nanocrystalline biphase structure composite coating and preparation method

A composite coating, iron-based amorphous technology, applied in the direction of coating, metal material coating process, etc., can solve the problems of bond state mismatch, surface steps and roughness increase, and achieve the effect of improving wear resistance.

Active Publication Date: 2020-07-24
ANHUI SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase of the specific surface, resulting in the increase of the surface steps and roughness, and the serious mismatch of the bond state

Method used

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  • Iron-based amorphous-nanocrystalline biphase structure composite coating and preparation method
  • Iron-based amorphous-nanocrystalline biphase structure composite coating and preparation method

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Embodiment 1

[0040] An iron-based amorphous nanocrystalline dual-phase structure composite coating, the element components in the composite coating include: 4% Ni, 7% Cr, 1% Mo, 15% B, 5% Si, 3% C, 3%W, 3%CeO 2 , The balance is Fe.

[0041] A method for preparing an iron-based amorphous nanocrystalline dual-phase structure composite coating, the preparation method comprising the following steps:

[0042] S1: Raw material ratio

[0043] Atomized iron powder, boron powder, silicon powder, chromium powder, molybdenum powder, electrolytic nickel powder, tungsten powder and activated carbon powder are used as raw materials, and the raw materials are proportioned according to the alloy composition.

[0044] S2: Smelting and melting

[0045] The raw materials are put into an intermediate frequency induction furnace for smelting and melting. The melt temperature is 1500°C. In order to reduce the oxidation of the alloy and reduce the production cost, nitrogen is used as the protective gas during...

Embodiment 2

[0055] An iron-based amorphous nanocrystalline dual-phase structure composite coating, the element components in the composite coating include: 5% Ni, 6% Cr, 2% Mo, 10% B, 7% Si, 2% C, 4%W, 1%CeO 2 , The balance is Fe.

[0056] A method for preparing an iron-based amorphous nanocrystalline dual-phase structure composite coating, the preparation method comprising the following steps:

[0057] S1: Raw material ratio

[0058] Atomized iron powder, boron powder, silicon powder, chromium powder, molybdenum powder, electrolytic nickel powder, tungsten powder and activated carbon powder are used as raw materials, and the raw materials are proportioned according to the alloy composition.

[0059] S2: Smelting and melting

[0060] The raw materials are put into an intermediate frequency induction furnace for smelting and melting. The melt temperature is 1500°C. In order to reduce the oxidation of the alloy and reduce the production cost, nitrogen is used as the protective gas during...

Embodiment 3

[0070] An iron-based amorphous nanocrystalline dual-phase structure composite coating, the element components in the composite coating include: 3% Ni, 4% Cr, 3% Mo, 13% B, 8% Si, 5% C, 2%W, 5%CeO 2 , The balance is Fe.

[0071] A method for preparing an iron-based amorphous nanocrystalline dual-phase structure composite coating, the preparation method comprising the following steps:

[0072] S1: Raw material ratio

[0073] Atomized iron powder, boron powder, silicon powder, chromium powder, molybdenum powder, electrolytic nickel powder, tungsten powder and activated carbon powder are used as raw materials, and the raw materials are proportioned according to the alloy composition.

[0074] S2: Smelting and melting

[0075] The raw materials are put into an intermediate frequency induction furnace for smelting and melting. The melt temperature is 1500°C. In order to reduce the oxidation of the alloy and reduce the production cost, nitrogen is used as the protective gas during...

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Abstract

The invention discloses an iron-based amorphous-nanocrystalline biphase structure composite coating. The composite coating is characterized by comprising, in percent by mass, the components of 3-5% ofNi, 4-7% of Cr, 1-3% of Mo, 10-15% of B, 5-8% of Si, 2-5% of C, 2-4% of W, 1-5% of CeO2 and the balance of Fe. A preparation method of the iron-based amorphous-nanocrystalline biphase structure composite coating comprises the steps of S1, raw material blending; S2, smelting and melting; S3, metal liquid atomizing treatment; S4, drying and grading; and S5, mixing. According to the iron-based amorphous-nanocrystalline biphase structure composite coating, CeO2 is added, the thickness of the coating is 0.5-3mm, the coating and a base material are in metallurgical bonding, the bonding strength isgreater than or equal to 300Mpa, the microhardness of the coating is greater than or equal to 600HV<0.2>, the internal organization of the coating is dense, porosity is smaller than or equal to 1%, the wear rate of a frictional pair by the coating is smaller than or equal to 1*10<-5>mm<3> / N.m, and the wear resistance of the base material is remarkably improved.

Description

technical field [0001] The invention relates to the field of composite coating materials, in particular to an iron-based amorphous nanocrystalline dual-phase structure composite coating and a preparation method thereof. Background technique [0002] Amorphous alloys (Amorphous alloys) are a solid material in which liquid alloy atoms in a molten state "freeze" quickly under rapid cooling conditions. The atoms do not form a regular arrangement, and are also called metallic glasses. ), which only maintains a stable state in a certain temperature range, and belongs to a new type of metastable material. Rapid "freezing" makes amorphous materials have unique structural arrangement characteristics, that is, short-range order and long-range disorder of atomic arrangement, which in turn determines their performance characteristics different from traditional crystalline materials. Amorphous materials have extremely high strength and toughness, excellent wear resistance and corrosion ...

Claims

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Application Information

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IPC IPC(8): C23C24/10B22F1/00B22F9/08C22C38/00C22C38/34C22C38/36C22C38/44C22C38/54
CPCB22F1/0003C23C24/103B22F9/082C22C38/44C22C38/54C22C38/34C22C38/36C22C38/005
Inventor 郭纯李云胡瑞章陈丰魏宝丽张华
Owner ANHUI SCI & TECH UNIV