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A kind of preparation method of molybdenum-silicon-boron composite particle powder

A composite granule and granule powder technology, which is applied in the field of additive manufacturing, can solve problems such as difficult to mix powders, difficult to meet additive manufacturing, and different particle sizes.

Active Publication Date: 2020-11-10
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional molybdenum silicon boron powder is physically mixed with three metal powders. Due to the different particle density and particle size of each powder, it is difficult to form a uniform mixed powder, which is difficult to meet the requirements of additive manufacturing.

Method used

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  • A kind of preparation method of molybdenum-silicon-boron composite particle powder
  • A kind of preparation method of molybdenum-silicon-boron composite particle powder

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0033] The preparation method of molybdenum-silicon-boron composite particle powder proposed by the present invention is based on the method of gradient heating treatment, adopts a heating mixing furnace, and through two heating treatments, the boron and silicon element particles are sequentially melted and attached to the outer layer of molybdenum metal particles to form Composite particles, sieve out unmelted and adhered particles, and obtain molybdenum-silicon-boron composite particle powder with uniform composition and particle size.

[0034] like figure 2 As shown, the heating and mixing furnace used to prepare molybdenum-silicon-boron composite particle powder in the present invention includes control equipment and a vacuum chamber.

[0035] There is a...

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Abstract

The invention provides a method for preparing molybdenum-silicon-boron composite particle powder. Based on the idea of ​​gradient heating treatment, a heating and mixing furnace is used to heat the molybdenum powder and use the energy carried by the powder to melt the silicon and boron powder at the bottom, and further Attached to the core molybdenum powder. The surface sphericity of the powder is improved by spheroidization, the loose bonding layer on the surface is removed, and finally the spherical powder with ideal size and uniform composition distribution is obtained by screening, which can provide better conditions for the additive manufacturing of molybdenum silicon boron.

Description

technical field [0001] The invention relates to a method for preparing molybdenum-silicon-boron composite particle powder used for additive manufacturing, and belongs to the field of additive manufacturing. Background technique [0002] Molybdenum-silicon-boron alloy is a refractory material with high melting point, high temperature strength and high hardness, and has very important application prospects. In a high-temperature environment, its surface can be protected by forming borosilicate glass relative to the substrate. However, due to the high melting point and poor formability of metal molybdenum, its processing can only be processed by melting and casting. [0003] As a material processing technology with broad application prospects, additive manufacturing can realize rapid prototyping of various complex components. In addition, due to its high energy density and rapid temperature rise, the material structure obtained by its processing has greater advantages compared...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F9/04
CPCB22F9/04B22F2009/043B22F1/16
Inventor 汪诚戴鹏里李秋良安志斌童立甲
Owner AIR FORCE UNIV PLA