Method for preparing low-oxygen molybdenum and molybdenum alloy clad with Al4SiC4-HfC

A technology of al4sic4-hfc and molybdenum alloy, which is applied in the field of preparing low-oxygen metal alloys, can solve problems such as poor compatibility, shedding, coating cracking, etc., and achieve excellent hardness and wear resistance, excellent oxidation resistance, and high bonding strength Effect

Active Publication Date: 2014-08-13
XIAN RUIKE NEW MATERIAL CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using electroplating, spraying, cladding, vapor deposition and other coating processes, the bonding strength between the coating and the substrate is low,

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing low-oxygen molybdenum and molybdenum alloy clad with Al4SiC4-HfC
  • Method for preparing low-oxygen molybdenum and molybdenum alloy clad with Al4SiC4-HfC

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] will Al 4 SiC 4 The powder and HfC powder are Al by mass fraction percentage 4 SiC 4 : HfC=55%: 45% mixed uniformly to obtain Al 4 SiC 4 -HfC powder, the Al 4 SiC 4 -HfC powder and composite binder are mixed in a volume ratio of 1:3, stirred evenly, and prepared into a viscous coating and filling slurry.

[0027] First, the coating filling slurry is used to spread evenly to the bottom of the cavity of the pressing mold, and the coating thickness of the coating filling slurry on the bottom of the cavity of the pressing mold is 1 mm. Then, a lightweight filling block is placed above the coating. The filling block is coaxial with the cavity of the pressing mold, so that the side of the filling block and the inner wall of the cavity of the pressing mold form a semi-closed trough with a side length of 1 mm. Fill the trough with the coating filling slurry by injection;

[0028] After the coating and filling slurry in the trough is solidified, remo...

Example Embodiment

[0031] Example 2:

[0032] will Al 4 SiC 4 The powder and HfC powder are Al by mass fraction percentage 4 SiC 4 : HfC=60%: 40% mixed uniformly to obtain Al 4SiC 4 -HfC powder, the Al 4 SiC 4 -HfC powder and composite binder are mixed in a volume ratio of 1:3, stirred evenly, and prepared into a viscous coating and filling slurry.

[0033] First, the coating filling slurry is used to spread evenly to the bottom of the cavity of the pressing mold, and the coating thickness of the coating filling slurry on the bottom of the cavity of the pressing mold is 2 mm. Then, a lightweight filling block is placed above the coating, and the filling block is coaxial with the cavity of the pressing mold, so that the side of the filling block and the inner wall of the cavity of the pressing mold form a semi-closed trough with a side length of 2 mm. Fill the trough with the coating filling slurry by injection;

[0034] After the coating and filling slurry in the trough is solidified, r...

Example Embodiment

[0036] Example 3:

[0037] will Al 4 SiC 4 The powder and HfC powder are Al by mass fraction percentage 4 SiC 4 : HfC=70%: 30% mixed uniformly to obtain Al 4 SiC 4 -HfC powder, the Al 4 SiC 4 -HfC powder and composite binder are mixed in a volume ratio of 1:2, stirred evenly, and prepared into a viscous coating and filling slurry.

[0038] First, the coating filling slurry is used to spread evenly to the bottom of the cavity of the pressing mold, and the coating thickness of the coating filling slurry on the bottom of the cavity of the pressing mold is 2 mm. Then, a lightweight filling block is placed above the coating, and the filling block is coaxial with the cavity of the pressing mold, so that the side of the filling block and the inner wall of the cavity of the pressing mold form a semi-closed trough with a side length of 2 mm. Fill the trough with the coating filling slurry by injection.

[0039] After the coating and filling slurry in the trough is solidified, ...

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 discloses a method for preparing low-oxygen molybdenum and molybdenum alloy clad with Al4SiC4-HfC. The method for preparing low-oxygen molybdenum and molybdenum alloy clad with Al4SiC4-HfC adopts an injection filling method, and specifically comprises that Al4SiC4-HfC powder and a compound binding agent are mixed in a volume ratio of 1:(3-2) into slurry, and the slurry is injected and filled at the periphery of molybdenum and molybdenum alloy powder in a pressing mould with the filling thickness of 1-3mm; pressing at a pressure of 50-100KN is carried out, so that a molybdenum and molybdenum alloy pressed blank clad with Al4SiC4-HfC is formed; then the conventional sintering and annealing are carried out on molybdenum and molybdenum alloy, so that a Al4SiC4-HfC clad low-oxygen molybdenum and molybdenum alloy material is prepared. The prepared Al4SiC4-HfC clad low-oxygen molybdenum and molybdenum alloy material has the advantages of excellent oxidation resistance, long service life, high bonding strength between a cladding layer and a matrix, good compatibility, low cost and simple technology.

Description

technical field [0001] The invention relates to a method for preparing a low-oxygen metal alloy, in particular to an Al 4 SiC 4 A method for preparing low-oxygen molybdenum and molybdenum alloys by coating with HfC. Background technique [0002] Molybdenum has the characteristics of high strength, high hardness, wear resistance, and good thermal and electrical conductivity. In addition to the characteristics of molybdenum, molybdenum alloys also have the advantages of small expansion coefficient and good corrosion resistance. They are often used as high-temperature structural materials and functional Materials, thus widely used in metallurgy, machinery, petroleum, chemical industry, national defense, aerospace, electronics, nuclear industry and many other fields. However, due to the oxidation of molybdenum and molybdenum alloys when the temperature reaches 400°C, MoO 2 ;Rapidly oxidized to MoO at 500℃~600℃ 3 Volatile. Therefore, the oxidation behavior of molybdenum affe...

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): C22C1/05C22C1/10
Inventor 胡平王快社于志涛杨帆谭江飞何欢承康轩齐
Owner XIAN RUIKE NEW MATERIAL CO LTD
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