Preparation method of molybdenum alloy, molybdenum alloy and application of molybdenum alloy

A technology of molybdenum alloy and molybdenum powder, which is applied in the field of molybdenum alloys, can solve the problems of high low-temperature brittleness of molybdenum materials, high processing difficulty, and brittle secondary crystallization of molybdenum.

Active Publication Date: 2018-06-22
昆山胜典机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the low-temperature brittleness of molybdenum material is large, and there is a disadvantage that it is difficult to process in practical applications; moreover, when molybdenum is subjected to high temperature treatment, it will cause the secondary crystallization of molybdenum to become brittle, so that the molybdenum material cannot be processed secondary

Method used

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  • Preparation method of molybdenum alloy, molybdenum alloy and application of molybdenum alloy
  • Preparation method of molybdenum alloy, molybdenum alloy and application of molybdenum alloy
  • Preparation method of molybdenum alloy, molybdenum alloy and application of molybdenum alloy

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Embodiment 1

[0020] A method for preparing a molybdenum alloy, comprising the steps of: taking molybdenum powder and strontium powder with a particle size of 300 meshes, adding them to a three-dimensional mixer and mixing them evenly to obtain a mixed powder, wherein the mass ratio of the molybdenum powder and the strontium powder is 1: 0.078; then the mixed powder is added to a cold isostatic press for compression molding to obtain a pressed green body with a thickness of 28mm, the pressed pressure is 500MPa, and the time is 60s; then the pressed green body is put into a vacuum furnace for sintering, get molybdenum alloy;

[0021] Among them, the sintering system is: heat at 600°C for 30 minutes; then heat up to 800°C and hold for 40 minutes; then heat up to 1200°C and hold for 1 hour; then heat up to 1500°C and hold for 1.5 hours; 2h, then raise the temperature to 1900°C and keep it warm for 2h.

[0022] Preparation of the sample to be tested: take the sintered molybdenum alloy green bo...

Embodiment 2

[0030] A method for preparing a molybdenum alloy, comprising the steps of: taking molybdenum powder and strontium powder with a particle size of 300 meshes, adding them to a three-dimensional mixer and mixing them evenly to obtain a mixed powder, wherein the mass ratio of the molybdenum powder and the strontium powder is 1: 0.05; then the mixed powder is added to a cold isostatic press for compression molding to obtain a pressed green body with a thickness of 28mm, the pressed pressure is 400MPa, and the time is 30s; then the pressed green body is put into a vacuum furnace for sintering, get molybdenum alloy;

[0031] Among them, the sintering system is: heat at 600°C for 30 minutes; then heat up to 800°C and hold for 40 minutes; then heat up to 1200°C and hold for 1 hour; then heat up to 1500°C and hold for 1.5 hours; 2h, then raise the temperature to 1900°C and keep it warm for 2h.

[0032] Preparation of the sample to be tested: take the sintered molybdenum alloy green bod...

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Abstract

The invention discloses a preparation method of a molybdenum alloy. The preparation method comprises the following steps that molybdenum powder and strontium powder are mixed uniformly and pressed andformed after being subjected to isostatic pessing treatment, and a pressed green body is obtained; then, the pressed green body is placed into a vacuum furnace to be sintered, and the molybdenum alloy is obtained after the pressed green body is cooled along with the furnace, wherein the mass ratio of the molybdenum powder to the strontium powder is 1 : (0.005-0.01), the pressure intensity of isostatic pessing treatment is 400-600 MPa, and time is 30-90 s; and according to the sintering system, heat preservation is performed for 1-1.5 hours at the temperature of 600-800 DEG C, then the temperature is raised to 1100-1300 DEG C, heat preservation is performed for 0.5-1 hour, then the temperature is raised to 1500-1900 DEG C, and heat preservation is performed for 5-6 hours. The invention further discloses the molybdenum alloy prepared through the preparation method and application of the molybdenum alloy. The molybdenum alloy is superior to an ordinary molybdenum alloy on the aspects ofhigh-temperature resistance, high-temperature intensity, oxidation resistance and low-temperature plasticity, can replace pure molybdenum and TZM and is preferred as a thermal equipment material.

Description

technical field [0001] The invention relates to the technical field of preparation of molybdenum alloy materials, in particular to a preparation method of molybdenum alloy, a molybdenum alloy prepared by the preparation method and applications thereof. Background technique [0002] Due to its high melting point, good electrical and thermal conductivity, and good corrosion resistance, molybdenum is widely used in electronic power equipment manufacturing, metal material processing, glass manufacturing, high-temperature furnace structural components manufacturing, aerospace and national defense and other industries. However, the low-temperature brittleness of molybdenum materials has the disadvantage of being difficult to process in practical applications; moreover, when molybdenum is subjected to high-temperature treatment, the secondary crystallization of molybdenum will become brittle, making it impossible for the molybdenum material to undergo secondary processing. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04B22F3/10B22F3/04
Inventor 诸伟龙张恩杰崔冬焕山口純二朝日成海
Owner 昆山胜典机电科技有限公司
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