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Method for preparing spherical Titanium-Zirconium-Molybdenum alloy powder

A technology of alloy powder and spherical shape, which is applied in metal processing equipment, transportation and packaging, etc. It can solve the problems of low density, poor fluidity and irregular shape of TZM alloy powder, reduce vaporization and burning loss, and improve production efficiency And the effect of product quality and low cost

Active Publication Date: 2019-02-15
云航时代(重庆)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems such as poor fluidity, low density and irregular shape of the TZM alloy powder prepared by the existing production process, and a preparation method of a spherical TZM alloy powder is designed.

Method used

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  • Method for preparing spherical Titanium-Zirconium-Molybdenum alloy powder
  • Method for preparing spherical Titanium-Zirconium-Molybdenum alloy powder
  • Method for preparing spherical Titanium-Zirconium-Molybdenum alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The low-oxygen spherical TZM (0.4Ti-0.08Zr-0.03C-Mo) alloy powder with a particle size range of 20 μm-45 μm comprises the following steps as figure 1 Shown:

[0042] Step 1: Doping 0.08% (mass fraction, the same below) zirconium hydride (ZrH 2 ) powder, 0.4% titanium hydride powder (TiH 2 ) and 0.03% graphite powder with a particle size of 10 μm-25 μm and a purity of ≥99.9 wt%, to prepare TZM raw material powder with a stoichiometric number of 0.4Ti-0.08Zr-0.03C-Mo.

[0043] Step 2: adding analytically pure absolute ethanol to the TZM raw material powder to prepare a slurry with a solid phase mass percentage of 60%;

[0044] Step 3: Pour the slurry into a molybdenum mixing tank of a three-dimensional mixer, fill the tank with 99.9wt% argon for atmosphere protection, seal the tank, and mix for 3 hours until the slurry is completely infiltrated and mixed evenly;

[0045] Step 4: Use a vacuum drying oven to dry the uniformly mixed slurry under an argon protective atmosp...

Embodiment 2

[0052] The spherical (0.5Ti-0.1Zr-0.02C-Mo) TZM alloy powder with a particle size range of 53 μm-90 μm is prepared, comprising the following steps:

[0053] Step 1: Doping 0.1% (mass fraction, the same below) zirconium hydride (ZrH 2 ) powder, 0.5% titanium hydride powder (TiH 2 ) and 0.02% graphite powder with a particle size of 12 μm-20 μm to prepare TZM raw material powder with a stoichiometric number of 0.5Ti-0.1Zr-0.02C-Mo.

[0054] Step 2: adding analytically pure absolute ethanol to the TZM raw material powder to prepare a slurry with a solid phase mass percentage of 50%;

[0055] Step 3: Pour the slurry into a molybdenum mixing tank of a three-dimensional mixer, fill the tank with 99.9wt% argon for atmosphere protection, seal the tank, and mix for 3 hours until the slurry is completely infiltrated and mixed evenly;

[0056] Step 4: Use a vacuum drying oven to dry the uniformly mixed slurry under an argon protective atmosphere with a purity of 99.95 wt%. The drying te...

Embodiment 3

[0063] The spherical (0.45Ti-0.08Zr-0.03C-Mo) TZM alloy powder with a particle size range of 30 μm-75 μm is prepared, comprising the following steps:

[0064] Step 1: Doping 00.8% (mass fraction, the same below) zirconium hydride (ZrH 2 ) powder, 0.45% titanium hydride powder (TiH 2 ) and 0.03% graphite powder with a particle size of 12 μm-20 μm to prepare TZM raw material powder with a stoichiometric number of 0.45Ti-0.08Zr-0.03C-Mo.

[0065] Step 2: adding analytically pure absolute ethanol to the TZM raw material powder to prepare a slurry with a solid phase mass percentage of 55%;

[0066] Step 3: Pour the slurry into a molybdenum mixing tank of a three-dimensional mixing machine, fill the tank with 99.9wt% argon for atmosphere protection, seal the tank, and mix for 3.5 hours until the slurry is completely infiltrated and mixed evenly ;

[0067] Step 4: Use a vacuum drying oven to dry the uniformly mixed slurry under an argon protective atmosphere with a purity of 99.9 ...

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Abstract

The invention provides a method for preparing spherical Titanium-Zirconium-Molybdenum (TZM) alloy powder, and belongs to the technical field of metal powder material preparation. The method for preparing the spherical Titanium-Zirconium-Molybdenum (TZM) alloy powder comprises the steps that reduced molybdenum (Mo) powder, titanium hydride (TiH2) powder, zirconium hydride (ZrH2) powder and graphitepowder are adopted as basic raw materials to prepare raw powder which conforms to the alloy stoichiometry; absolute ethyl alcohol is added into the raw powder to prepare slurry, and thorough stirringis carried out for uniform mixing; the slurry is subjected to vacuum drying, and powder is sintered under a reducing atmosphere; the alloy powder sintered blank is subjected to ball-milling to be sufficiently broken; the ball-milled alloy powder is sieved and irregular TZM alloy powder within a certain particle size range is selected out; the irregular TZM alloy powder is fed into an inductivelycoupled plasma torch, the TZM alloy powder is rapidly melted under a high temperature, and molten alloy droplets form a spherical shape under the action of surface tension; and the molten spherical TZM alloy droplets are separated from a high temperature region of plasma and rapidly cooled under the protection of inert gas to form the spherical TZM alloy powder.

Description

technical field [0001] The invention belongs to the technical field of preparation of alloy powder materials, in particular to a method for reducing molybdenum (Mo) powder, titanium hydride (TiH 2 ) powder, zirconium hydride (ZrH 2 ) powder and graphite powder are used as raw materials to prepare spherical molybdenum-titanium-zirconium (TZM) alloy powder. Background technique [0002] Molybdenum alloy is a non-ferrous alloy composed of molybdenum as the matrix and adding other elements. Molybdenum-titanium-zirconium alloy (Titanium-Zirconium-Molybdenum, TZM, 0.4%-0.55%Ti, 0.06-0.12%Zr, 0.01%-0.04%C, Mo Bal.) is currently the most widely used molybdenum-based alloy. While retaining the high melting point, high strength, wear resistance and excellent thermal and electrical conductivity of molybdenum metal itself, it also has the advantages of high elastic modulus, low expansion coefficient, low saturated vapor pressure, creep resistance and corrosion resistance. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F1/00
CPCB22F9/14B22F1/065
Inventor 刘金涛陈海群周法
Owner 云航时代(重庆)科技有限公司
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