Preparation method of surface-treated ZTA particle reinforced steel-based composite wear-resistant part

A composite wear-resistant part and particle reinforcement technology, which is applied in the field of wear-resistant material preparation, can solve the problems affecting the large-scale application of wear-resistant parts, poor bonding, and ZTA ceramic particles can not achieve the reinforcement effect, etc., to achieve high bonding strength and improve wear resistance. Abrasiveness, effect of increasing thickness

Active Publication Date: 2019-03-26
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The binding between ZTA particles and iron matrix is ​​poor. The combination of ZTA ceramic particles and iron matrix in the composite material prepared by casting infiltration method is a single mechanical combination, which makes ZTA ceramic particles unable to achieve the expected reinforcement effect, which seriously affects the Large-scale application of wear-resistant parts under harsh actual working conditions

Method used

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  • Preparation method of surface-treated ZTA particle reinforced steel-based composite wear-resistant part
  • Preparation method of surface-treated ZTA particle reinforced steel-based composite wear-resistant part

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preparation example Construction

[0029] A method for preparing a surface-treated ZTA particle-reinforced steel-based composite wear-resistant part of the present invention comprises the following steps:

[0030] S1. Soak the ZTA particles in acetone for 10-30 minutes, then pickle them, then use ultrasonic waves to wash them in acetone for 5-15 minutes, and then wash them with deionized water. The treated ZTA particles are dried in an electric heating constant temperature blast drying oven;

[0031] S2. The method of DC magnetron sputtering is used to coat metal chromium on the surface of ZTA. In the working room, the particles pass through the deposition area in the form of repeated rotation and falling. By controlling the rotation speed and movement time of the ZTA particles in the deposition area, it can be surface metallization;

[0032] Plating is specifically:

[0033] The positive ion acceleration voltage is 200-280V, the sputtering current is 10-15A, the sputtering power is 3300-4000W, the substrate t...

Embodiment 1

[0044] 1) First soak ZTA in acetone for 10 minutes, pickle the ZTA particles, then ultrasonically clean them with acetone for 5 minutes, wash them with deionized water, and dry the treated ZTA particles in an electric constant temperature blast drying oven;

[0045] 2) Secondly, metal chromium was plated on the surface of ZTA by DC magnetron sputtering, and the initial vacuum degree of the deposition chamber was 2.0×10 -2 , positive ion accelerating voltage 200V, sputtering current 10A, sputtering power 3300W, working pressure 1.0×10 -1 , The plating time is 0.5h, and annealing at 200°C for 1h is selected to eliminate the stress of chromium film rupture.

[0046] 3) Subsequently, the chrome-plated ZTA particles were ultrasonically cleaned in acetone for 10 minutes, washed with deionized water, dried, and put into 5g / L stannous chloride (SnCl 2 ) solution sensitization treatment for 10min, with 0.3g / L palladium chloride (PdCl 2 ) solution activation treatment, 5g / L sodium hyp...

Embodiment 2

[0050] 1) First soak ZTA in acetone for 20 minutes, pickle the ZTA particles, then clean them with acetone for 10 minutes by ultrasonic waves, wash them with deionized water, and dry the treated ZTA particles in an electric heating constant temperature blast drying oven;

[0051] 2) Secondly, metal chromium was plated on the surface of ZTA by DC magnetron sputtering, and the initial vacuum degree of the deposition chamber was 2.5×10 -2 , positive ion accelerating voltage 240V, sputtering current 13A, sputtering power 3600W, working pressure 2.0×10 -1 , Plating time is 5.5h, choose 250 ℃ annealing 2.5h, eliminate the stress of chromium film rupture.

[0052] 3) Subsequently, the chrome-plated ZTA particles were ultrasonically cleaned in acetone for 20 minutes, washed with deionized water, dried, and put into 10g / L stannous chloride (SnCl 2 ) solution sensitization treatment for 13min, with 0.5g / L palladium chloride (PdCl 2 ) solution activation treatment, 10g / L sodium hypopho...

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Abstract

The invention discloses a preparation method of a surface-treated ZTA particle reinforced steel-based composite wear-resistant part. ZTA particles are subjected to activating treatment, and then the surfaces of the ZTA particles are plated with metal chromium by adopting a direct-current magnetron sputtering method; afterwards, sensitization and activating are carried out, surface modification iscarried out on the ZTA particles by adopting chemical plating, ZTA particles plated with Cr-Ni layers are filled into a graphite mold together with Ni powder, Al powder and Cr powder, and vacuum sintering is performed to obtain a prefabricated body with a honeycomb structure; and molten metal pouring is carried out by adopting a cast infiltration method, and cooling is performed to obtain the reinforced steel-based composite wear-resistant part with a pinning effect. According to the preparation method, active elements introduced by means of physical vapor deposition (PVD) and chemical platingcan be used to optimize the combination mode of the ZTA particles and metal, so that the interface bonding is converted from mechanical bonding to metallurgical bonding, and relatively high bonding strength is realized.

Description

technical field [0001] The invention belongs to the technical field of preparation of wear-resistant materials, and in particular relates to a preparation method of surface-treated ZTA particle-reinforced steel-based composite wear-resistant parts. Background technique [0002] With the rapid development of my country's energy, transportation, and basic raw material industries, especially the implementation of the Western Development Strategy and the construction of major projects such as South-to-North Water Transfer, High-speed Railway, and West-East Gas Transmission, building materials, non-ferrous metals, engineering machinery, thermal power generation, etc. The demand for high-performance wear-resistant materials in various industries has increased significantly. However, due to the limitations of metallurgy, the performance improvement of single metal materials is limited. Although the wear resistance of the overall alloyed material is improved, its toughness is also g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D23/04B22F1/02B22F3/11C23C14/35C23C14/18C23C18/32C23C18/18
CPCC23C14/185C23C14/35C23C18/1893C23C18/32B22D23/04B22F3/11B22F1/17
Inventor 李烨飞李聪郑巧玲高义民李博刘志伟赵四勇
Owner XI AN JIAOTONG UNIV
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