Iron-based alloy for corrosion-resistant coating and application

A technology for corrosion-resistant coatings and iron-based alloys, applied in coatings, metal material coating processes, fusion spraying, etc. Coating process and other issues

Pending Publication Date: 2022-01-21
江苏智仁景行新材料研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing materials cannot meet the corrosion resistance requirements in special environments, especially in high temperature (≥1000°C), sulfur-containing

Method used

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  • Iron-based alloy for corrosion-resistant coating and application
  • Iron-based alloy for corrosion-resistant coating and application

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the specific embodiments of the application. Obviously, the described embodiment is only the present application. Some of the examples are applied, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0032] It should be noted that the terms "comprising" and "having" in the specification and claims of the present application and any variations thereof are intended to cover non-exclusive inclusion, for example, processes and methods that include a series of steps or units The systems, products or devices are not necessarily limited to those steps or units explicitly list...

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Abstract

The invention discloses an iron-based alloy for a corrosion-resistant coating and application of the iron-based alloy. The iron-based alloy comprises the following components in percentage by mass: 33.0%-40.0% of Cr, 0.5%-8.0% of Mo, 1.0%-8.0% of Si, 0.1%-5.0% of Al and the balance Fe. The iron-based alloy for the corrosion-resistant coating can form a protective coating which has enough corrosion resistance and enough adhesion to a matrix. Coating may be conducted with existing processes such as laser cladding, plasma surfacing PTA, HVOF, HVAF and plasma spraying.

Description

technical field [0001] The invention belongs to the field of corrosion-resistant iron-based alloys, in particular to a corrosion-resistant iron-based alloy used in a surface coating process and its application. Background technique [0002] Iron-based alloys need to have high corrosion resistance in certain specific environmental conditions, such as parts resistant to high temperature, atmosphere, water vapor, water and oxidative acid corrosion. In order to improve the corrosion resistance of the workpiece surface, surface coating processes, such as laser cladding, plasma transferred arc surfacing, thermal spraying, etc., are usually used to coat the workpiece surface with corrosion-resistant materials. Martensitic stainless steels, such as alloy 431, are often used as coating materials. However, the existing materials cannot meet the corrosion resistance requirements in special environments, especially in high temperature (≥1000°C), sulfur-containing and other harsh enviro...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/34C22C38/02C22C38/06C22C30/00C22C38/04C22C38/26C22C38/24C23C24/10C23C4/06
CPCC22C38/22C22C38/34C22C38/02C22C38/06C22C30/00C22C38/04C22C38/26C22C38/24C23C24/106C23C4/06
Inventor 郜俊震董世新刘林林王祥王贵宗陈佳鹏
Owner 江苏智仁景行新材料研究院有限公司
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