Preparation method of in-situ self-generated wc+tic composite reinforced iron-based wear-resistant coating

A composite reinforcement and wear-resistant coating technology, which is applied in the field of wear-resistant coatings, can solve problems such as the mismatch between the hardness of the reinforcement phase and the matrix, and achieve the effects of strong adaptability to shape and size, simple equipment, and cheap raw materials
CN104451664BInactive Publication Date: 2017-04-05HUBEI UNIV OF AUTOMOTIVE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUBEI UNIV OF AUTOMOTIVE TECH
Publication Date
2017-04-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method for an in-situ synthesized WC and Tic composite reinforced iron-based wear-resistant coating. The method comprises the following steps: firstly uniformly mixing W, TI, C and Fe-Ni self-flux alloy powder, and then loading the W, TI, C and Fe-Ni self-flux alloy powder into a high-temperature-resistant ceramic bushing bonded to a base plate; prefusing surface layer powder through a plasma non-transferred arc, and fusing inner layer powder and the base plate through the plasma non-transferred arc; finally ensuring that coating melt is naturally cooled in the high-temperature-resistant ceramic bushing. Reinforcement prepared through the method belongs to composite enhancement of TiC and WC of different-scale carbides, compared with single carbide WC, the reinforcement ensures that the coating abrasion loss is reduced by 23 to 62 percent, and the abrasion resistance is greatly improved; the adhesion strength between the in-situ synthesized enhancement phase and a base body is large, and the in-situ synthesized enhancement phase has low probability of falling off from an abrasive surface.
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Description

technical field

[0001] The invention relates to the field of wear-resistant coatings, in particular to a preparation method of in-situ self-generated WC+TiC composite reinforced iron-based wear-resistant coatings. Background technique

[0002] Currently, more than half of the world's total energy is consumed by one or more forms of friction. In 2006, the loss caused by friction and wear in my country was as high as 950 billion yuan, and 320 billion yuan could be saved by improving and reducing friction and wear. In order to improve the wear resistance of metals, surface technology is usually used to obtain wear-resistant coatings. Coating materials are mostly composite materials, and carbides with high hardness and wear resistance are often used as reinforcement phases. TiC and WC are two important types of carbides. For example, the smaller TiC particles (5-15 μm) are the reinforcing phase of titanium-based composites and are used in the aerospace field; the larger-sized ...

Claims

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