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Thermal spraying powder, thermal spraying method and method for forming thermal spray coating

A technology for thermal spraying powder and powder, which is applied in heating inorganic powder plating, coating, metal material coating process and other directions, and can solve the problems of high price and expensive thermal spray coating.

Inactive Publication Date: 2006-04-19
FUJIMI INCORPORATED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermal spray coatings formed from these cermet powders are expensive compared to thermal spray coatings formed from chromium-iron-based alloy powders
Therefore, in the case that the existing thermal spray coatings formed by cermet powders are expensive, the industry needs improved wear resistance of thermal spray coatings formed by chromium-iron-based alloy powders

Method used

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Examples

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Embodiment Construction

[0009] An embodiment of the present invention will now be described.

[0010] The thermal spray powder according to the present embodiment is formed of chromium-iron-based alloy powder containing carbon black.

[0011] If the ratio of the mass of carbon black in the alloy powder to the total mass of chromium and iron in the alloy powder is less than 2%, the thermal spray coating formed from the thermal spray powder has low hardness and unsatisfactory wear resistance. Therefore, the proportion of carbon black must be 2% or more from the viewpoint of obtaining a thermal spray coating with good wear resistance. However, although the proportion of carbon black is 2% or more, when the proportion of carbon black is less than 3%, the abrasion resistance of the thermal spray coating may not be sufficient. Therefore, the proportion of carbon black is preferably 3% or more. At the same time, if the proportion of carbon black is greater than 10%, there is a risk that the wear resistanc...

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Abstract

A thermal spraying powder contains a chromium-iron based alloy powder that includes carbon. The ratio of the mass of carbon in the alloy powder to the total mass of chromium and iron in the alloy powder is 2% or more. 10% particle size D 10 of the alloy powder is preferably 10 m or more, and more preferably 15 m or more. 50% particle size D 50 of the alloy powder is preferably 20 mu m or more. The thermal spraying powder is suitable for use in forming a thermal spray coating through high-velocity flame spraying.

Description

technical field [0001] The present invention relates to a thermal spray powder for forming a thermal spray coating by high velocity flame spraying. The present invention also relates to a thermal spraying method, and a method of forming a thermal spray coating using the thermal spraying powder. Background technique [0002] A technology for forming thermal spray coatings on the surface of metal parts of various industrial machines and general machines needs to be able to impart characteristics such as corrosion resistance, wear resistance, and heat resistance to the surface. For example, Japanese Patent No. 2969050 and Japanese Patent No. 3155124 respectively disclose a technology in which a thermal spray coating made of a chromium-iron-based alloy is coated on the inner surface of the cathode chamber of a sodium-sulfur battery, thereby producing polysulfide Sodium imparts corrosion resistance. In particular, Japanese Patent No. 3155124 disclo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C30/00C23C24/08C23C4/00
CPCC23C4/04C23C4/065C23C4/067C23C4/06
Inventor 北村顺也五日市刚太和田聪
Owner FUJIMI INCORPORATED
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