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Preparation method of molybdenum alloy sheet with silicon coating layer

A technology of molybdenum alloy and silicon coating, which is applied in the field of alloy material manufacturing, can solve the problems of difficult plastic forming, insufficient low-temperature toughness, high price, etc., and achieve the effect of high film-base bonding strength, uniform and dense surface, and excellent mechanical properties

Inactive Publication Date: 2018-08-07
戴爱娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the low-temperature toughness of the TZM plate is insufficient, and plastic forming is difficult; although the Mo-Re plate has excellent performance, because Re is a scarce metal, the price is expensive, and the processing cost is difficult to control; Brittleness, strength and plasticity will be reduced at the same time, which will affect its service life and increase production costs
[0003] Silica gel has the characteristics of good thermal insulation performance, controllable nanostructure, good corrosion resistance, and excellent biocompatibility, but SiO 2 If the gel is directly coated on the surface of the alloy, there will be a problem of low bond strength, so it is necessary to introduce a film-forming agent for modification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The molybdenum alloy substrate of the molybdenum alloy sheet material of the present embodiment is made up of following weight components: 0.5% Mo 5 Si 3 / Y 2 o 3 ; The remainder is pure molybdenum powder substrate phase with an average particle size of <8 μm.

[0022] Will Mo 5 Si 3 / Y 2 o 3 , ball milled to an average particle size of 100-300nm.

[0023] According to the designed molybdenum doping material composition ratio, the pure molybdenum powder with an average particle size of 5 Si 3 / Y 2 o 3 Mixing, using traditional powder metallurgy methods to mix and press into sintered slabs.

[0024] The obtained sintered slab is heated to 1850° C. in a pure hydrogen atmosphere and kept for 5 hours for sintering; after cooling in the furnace, a sintered billet is obtained.

[0025] The obtained sintered billet is heated from room temperature to 1350° C. for hot rolling, and the deformation amount of each pass is 20%, and when the total deformation amount is gre...

Embodiment 2

[0030] The molybdenum alloy substrate of the molybdenum alloy sheet material of the present embodiment is made up of following weight components: 2% Mo 5 Si 3 / Y 2 o 3 ; The remainder is pure molybdenum powder substrate phase with an average particle size of <8 μm.

[0031] Will Mo 5 Si 3 / Y 2 o 3 , ball milled to an average particle size of 100-300nm.

[0032] According to the designed molybdenum doping material composition ratio, the pure molybdenum powder with an average particle size of 5 Si 3 / Y 2 o 3 Mixing, using traditional powder metallurgy methods to mix and press into sintered slabs.

[0033] The obtained sintered slab is heated to 2050° C. in a pure hydrogen atmosphere, and kept for 10 hours for sintering; after cooling with the furnace, a sintered billet is obtained.

[0034] The obtained sintered billet is heated from room temperature to 1500° C. for hot rolling, and the deformation of each pass is 35%, and when the total deformation is greater than 80...

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Abstract

The invention discloses a preparation method of a molybdenum alloy sheet with a silicon coating layer. The method can achieve the purpose of obviously improving and controlling material organization structures, and a multilayer film structure can stop oxygen vacancy migration. According to the preparation method disclosed y the invention, PVA / SiO2 composite sol surface modifying treatment is performed on the surface of the molybdenum alloy sheet; thus, a tungsten-nickel material has the advantages of even and compact surface, high film substrate bonding strength and excellent mechanical property.

Description

Technical field [0001] The invention relates to the field of alloy material manufacturing, in particular to a method for preparing a molybdenum alloy plate with a silicon coating. Background technique [0002] Molybdenum and its alloys have the advantages of high melting point, high strength, good electrical and thermal conductivity, strong corrosion resistance and good high-temperature mechanical properties. At present, the series used in the high temperature field mainly include TZM plates, Mo-La doped plates, Mo-Re plates and ASK doped plates. Among them, the plates used for high-temperature sintered boats are mainly TZM plates and Mo-La doped plates. Although they all have good high-temperature performance, there are still deficiencies at present. For example, the low-temperature toughness of the TZM plate is insufficient, and plastic forming is difficult; although the Mo-Re plate has excellent performance, because Re is a scarce metal, the price is expensive, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/05C23C18/12
CPCC22C19/03C22C1/05C23C18/1208
Inventor 戴爱娟
Owner 戴爱娟
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