Production method of fine particle sized cobalt-base alloy powder

A cobalt-based alloy, fine particle size technology, applied in the field of alloy powder, can solve the problems of low coating density and bonding strength, low powder loading rate, high oxygen content in fine powder, and achieve the effect of improving quality

Inactive Publication Date: 2012-04-25
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of fine-grained cobalt-based alloy powder, which solves the problems of high oxygen content, poor loose ratio and fluidity of the current cobalt-based alloy powder, low powder rate in spraying, and poor coating quality. Problems such as low density and low bonding strength improve the quality of cobalt-based alloy powder products

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  • Production method of fine particle sized cobalt-base alloy powder
  • Production method of fine particle sized cobalt-base alloy powder
  • Production method of fine particle sized cobalt-base alloy powder

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] The fine-grained cobalt-based alloy powder prepared in the embodiment of the present invention includes cobalt and other alloying elements. Taking typical cobalt-chromium-tungsten alloy powder as an example, the chemical formula of the alloy powder is: CoCrNiW.

[0029] For example, its mass ratio components can be: chromium: 10.0-40.0wt%, nickel: 1-12wt%, tungsten: 2-10wt%, carbon: 0.20-0.90wt%, oxygen: ≤0.04wt%, cobalt: The margin, as show...

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Abstract

The invention relates to a production method of fine particle sized cobalt-base alloy powder, which comprises the steps that: firstly, metal materials of targeted components or alloy materials which contain the corresponding cobalt content are taken; the selected raw materials are placed into a crucible, and the cobalt-base alloy powder is obtained through the vacuum induction melting and inert gas atomization technologies; and screening or grading is carried out, so the cobalt-base alloy powder with the powder size within 1-45mu m is produced. The problems of high oxygen content of fine powder, bad apparent density and fluidity, low powdering rate during the coating, low coating density and bonding strength and the like of the existing fine particle sized cobalt-base alloy powder are solved, and the quality of a cobalt-base alloy powder product is improved.

Description

technical field [0001] The invention relates to the technical field of alloy powders, in particular to a method for preparing fine-grained cobalt-based alloy powders. Background technique [0002] At present, with the rapid development of aerospace, energy, petrochemical and other industries, materials are required to adapt to higher ambient temperatures. Cobalt-based alloy is a general term for an alloy composed of cobalt, nickel, chromium, iron and other alloying elements, and is a commonly used high-temperature corrosion-resistant alloy. Cobalt-based alloys have been widely used in aerospace technology. When cobalt-based alloys are above 1038°C, their superiority is far superior to that of nickel-based alloys, and can be applied to high-efficiency engine components. With the rapid development of surface protection technology, the method of preparing high-temperature protective coatings with cobalt-based alloy powders has attracted widespread attention. [0003] Cobalt-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08C22C19/07C23C4/08C23C4/06
Inventor 于月光任先京张淑婷王辉马尧石长江
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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