Method for preparing anti-oxidation permeated layer on surface of molybdenum or molybdenum alloy

A molybdenum alloy, anti-oxidation technology, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of insufficient oxidation resistance, fast degradation of the permeation layer, complicated preparation process, etc., to achieve Improved low-temperature oxidation resistance, quick layer deposition, and simple operation
CN104831231AInactive Publication Date: 2015-08-12CHANGAN UNIV
3 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGAN UNIV
Publication Date
2015-08-12
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for preparing an anti-oxidation permeated layer on the surface of molybdenum or a molybdenum alloy. The method comprises the following steps: I, polishing the surface of molybdenum or the molybdenum alloy so as to remove oxidized skin on the surface, performing ultrasonic washing, and drying; II, preparing a coating permeation agent; and III, coating molybdenum or the molybdenum alloy into a crucible with the permeation agent, sealing the crucible and putting the crucible into a high-temperature furnace, performing heat-preservation treatment for 1-20 hours at 1000-1500 DEG C in the presence of argon, and performing furnace cooling till the room temperature, thereby obtaining the anti-oxidation permeated layer on the surface of molybdenum or the molybdenum alloy. As the high-temperature furnace is adopted to perform heat-preservation treatment on molybdenum or the molybdenum alloy coated in the permeation agent, the anti-oxidation permeated layer of a multi-layer structure can be formed on the surface of molybdenum or the molybdenum alloy, and the anti-oxidation permeated layer is high in adaptability to the shape of a molybdenum or molybdenum alloy substrate, uniform in thickness of permeated layer, slow in degradation speed of the permeated layer, and has the advantages of simplicity in operation and rapid permeated layer deposition speed.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of surface infiltration layer preparation, and in particular relates to a method for preparing a molybdenum or molybdenum alloy surface oxidation-resistant infiltration layer. Background technique

[0002] Molybdenum-based materials (such as industrial pure molybdenum or molybdenum alloys) have the advantages of high melting point, high high-temperature strength, and moderate density. However, molybdenum is very easy to react with oxygen in an oxidizing environment above 400 °C, resulting in a significant decrease in its mechanical properties, which severely limits its use as a high-temperature structural material in a high-temperature aerobic environment. Therefore, the high-temperature resistance of molybdenum-based materials Oxidation protection is one of the key technologies to achieve its successful application at high temperature.

[0003] The surface anti-oxidation coating technology is considered to...

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