Method for preparing the carbide coat on surface of metal alloy basal body containing carbon

A technology of metal alloys and carbides, which is applied in the field of preparation of carbide coatings on the surface of carbon-containing metal alloy substrates, can solve problems such as low production efficiency, low coating bonding strength, and demanding production equipment, and achieve improved wear resistance , Good controllability of coating thickness

Inactive Publication Date: 2003-07-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing carbide coatings include chemical vapor deposition, physical vapor deposition, thermal spraying, and thermal infiltration, etc., which have the disadvantages of demanding production equipment, low production efficiency, and low bonding strength of the coating.

Method used

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  • Method for preparing the carbide coat on surface of metal alloy basal body containing carbon
  • Method for preparing the carbide coat on surface of metal alloy basal body containing carbon
  • Method for preparing the carbide coat on surface of metal alloy basal body containing carbon

Examples

Experimental program
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Embodiment 1

[0024] see figure 1 . figure 1 The cross-sectional morphology of the prefabricated Cr coating converted to chromium carbide coating on the surface of T10 steel. According to the method of the present invention, the Cr coating is prefabricated on the surface of the T10 steel by electroplating, and kept at 1100° C. for 3 hours, so that the Cr coating is transformed into a chromium carbide coating.

Embodiment 2

[0026] see figure 2 . figure 2 The cross-sectional morphology of the prefabricated Cr coating converted to chromium carbide coating on the surface of GCr15 bearing steel. According to the method of the present invention, the Cr coating is prefabricated on the surface of the GCr15 bearing steel by electroplating, and kept at 900° C. for 3.5 hours to convert the Cr coating into a chromium carbide coating.

Embodiment 3

[0028] see image 3 . image 3 The cross-sectional morphology of the prefabricated Cr coating converted to chromium carbide coating on the surface of Cr12MoV die steel. According to the method of the present invention, the Cr coating is prefabricated on the surface of the Cr12MoV die steel by electroplating, and the temperature is kept at 1000° C. for 3 hours, so that the Cr is transformed into a chromium carbide coating.

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Abstract

A process for preparing a coated carbide layer on the surface of C-contained metallic alloy substrate incldues precoating a metallic alloy layer on the surface of said substrate, and heating to thermally diffuse the C element from substrate into the coated layer. Its advantages are high metallurgical adhesion, controllable thickness and high antiwear and anticorrosion performance.

Description

1. Technical field [0001] The invention belongs to the field of material processing and surface treatment, and relates to a method for preparing a carbide coating on the surface of a metal alloy, in particular to a method for preparing a carbide coating on the surface of a carbon-containing metal alloy substrate. 2. Background technology [0002] Carbide materials have the characteristics of high hardness and excellent wear resistance. Covering the surface of metal alloy substrates by coating can improve the wear resistance and life of parts made of substrate materials, and increase the added value of products. At present, the methods for preparing carbide coatings include chemical vapor deposition, physical vapor deposition, thermal spraying, and thermal infiltration, etc., which have the disadvantages of demanding production equipment, low production efficiency, and low bonding strength of the coating. 3. Contents of the invention [0003] In view of the defects or defic...

Claims

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Application Information

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IPC IPC(8): C23C28/00
CPCC23C28/347C23C28/324C23C28/34C23C28/325
Inventor 李长久杨冠军王豫跃
Owner XI AN JIAOTONG UNIV
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