Wolfram carbide-cobalt-carbon composite powder for hot spraying and preparation method thereof

A composite powder, tungsten carbide technology, applied in the field of tungsten carbide-cobalt series thermal spraying cermet powder, tungsten carbide cobalt cermet powder for thermal spraying, can solve problems such as affecting hardness and anti-wear performance

Inactive Publication Date: 2013-06-05
浙江亚通冶金科技有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used WC-Co composite powder is composed of WC, Co, Cr2C3 and other alloy powders. During the thermal spraying process, this kind of composite powder has the phenomenon of oxidative decomposition and decarburi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0010] The preparation method of the tungsten carbide-cobalt-carbon composite powder for thermal spraying is characterized in that the method comprises the following steps: it uses graphite powder as the carbon source, and directly mixes the graphite powder with other component powders in proportion, Under the protection of anhydrous alcohol, kerosene and other organic solvents, perform mechanical alloying treatment by ball milling or high-energy ball milling, then dry and sieve to prepare the composite powder.

[0011] The preparation method of the tungsten carbide-cobalt-carbon composite powder for thermal spraying is characterized in that the method includes the following steps: it uses organic compounds such as glucose as a carbon source, and directly mixes glucose powder and other component powders in proportion Mix and ball mill under the protection of anhydrous alcohol, kerosene and other organic solvents, dry at 60-80°C, carbonize in a vacuum furnace below 400°C, and th...

Embodiment 1

[0013] A preparation method of tungsten carbide-cobalt-carbon composite powder for thermal spraying, which comprises the following steps: it uses graphite powder as carbon source, directly mixes graphite powder with other component powders in proportion, and mixes them in absolute alcohol, kerosene Under the protection of other organic solvents, perform ball milling or high-energy ball milling mechanical alloying treatment, then dry and sieve to prepare the composite powder.

Embodiment 2

[0015] A preparation method of tungsten carbide-cobalt-carbon composite powder for thermal spraying, which comprises the following steps: it uses organic compounds such as glucose as carbon source, directly mixes glucose powder with other component powders in proportion, and dissolves in absolute alcohol , kerosene and other organic solvents under the protection of ball milling, drying at 60-80°C, carbonization in a vacuum furnace below 400°C, and then performing mechanical alloying treatment by ball milling or high-energy ball milling, and screening to prepare the composite powder.

[0016] Components and proportioning involved in the above-mentioned two embodiments can select following several easily:

[0017] One is: the tungsten carbide-cobalt-carbon composite powder for thermal spraying, which is composed of the following components and weight percentage ratio: Co18%, WC70%, C4%, Fe4%, Cr4%, that is, WC-18Co -4Fe-4Cr-4C.

[0018] The other is: the tungsten carbide-cobalt...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a wolfram carbide-cobalt-carbon composite powder for hot spraying and a preparation method thereof. The invention is characterized in that the composite powder contains simple substance carbon, and is composed of the following components in percentage by weight: 5-30% of Co, 60-90% of WC, 1-10% of C, 0-20% of Fe and 0-20% of Cr. The preparation method comprises the following steps: proportionally and directly mixing graphite powder used as a carbon source with other powder components, carrying out ball milling or high-energy ball milling mechanical alloying under the protection of absolute alcohol, kerosene or any other organic solvent, drying, and screening to obtain the composite powder. The invention can also comprise the following steps: by using an organic compound (such as glucose) as a carbon source, proportionally and directly mixing powdered glucose with other powder components, carrying out ball milling under the protection of absolute alcohol, kerosene or any other organic solvent, drying at 60-80 DEG C, carbonizing in a vacuum furnace at 400 DEG C below, carrying out ball milling or high-energy ball milling mechanical alloying, and screening to obtain the composite powder.

Description

technical field [0001] The invention relates to a tungsten carbide-cobalt cermet powder for thermal spraying, in particular to a tungsten carbide-cobalt series thermal spraying cermet powder containing elemental carbon that can inhibit tungsten carbide phase oxidation decomposition and decarburization, and belongs to the technical field of thermal spraying. Background technique [0002] Thermal sprayed WC-Co coating has excellent anti-wear properties. At present, the commonly used WC-Co composite powder is composed of WC, Co, Cr2C3 and other alloy powders. This kind of composite powder has oxidation decomposition and decarburization of WC phase in the thermal spraying process, which affects its hardness and wear resistance. Therefore, , Inhibiting the oxidative decomposition and decarburization of WC—Co in the thermal spraying process is an important issue to improve its coating performance. Contents of the invention [0003] The purpose of the present invention is to ove...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C4/06C22C29/08
Inventor 傅肃嘉刘晓刚潘君益徐群飞陈利斌
Owner 浙江亚通冶金科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap