Mechanical alloying preparation method for niobium-silicon powder

A technology of mechanical alloying and niobium silicon powder, which is applied in the field of material processing, can solve the problems of small production output, uneven particle size distribution of powder materials, and expensive equipment, so as to optimize the alloying effect, improve the uniformity of components, Effect of inhibiting oxidation phenomenon

Inactive Publication Date: 2017-06-13
QINGDAO R & D INST XIAN JIAOTONG UNIV +1
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Problems solved by technology

At present, the main preparation methods of powder used in 3D printing are atomization method, chemical reduction method and mechanical alloying, etc. Among them, the process involved in atomization method is complicated, the equipment is expensive, and the components prepared by chemical reduction method are uniform, but the production capacity It is small and will produce chemical reagent wastewater at the same time. The main advantages of the mechanical alloying method are that the equipment is cheap and the processing method is simple. large-scale applications

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Embodiment Construction

[0015] The present invention will be further described below in combination with specific embodiments.

[0016] The preparation method of mechanical alloying of niobium silicon powder includes the following steps, the selected alloy components include Al: 12-14%, Cr: 1-1.6%, V: 0.2-0.5%, and the balance is Nb,

[0017] Select the element powder corresponding to the above components according to the above atomic percentage, the particle size of the powder is 150-200 microns, and then add it to the ethylene glycol solvent to obtain the mixture, the quality of the ethylene glycol solvent is 4% of the total mass of the element powder times, followed by ultrasonic vibration stirring, stirring for 10 minutes and then heating and concentrating the above solvent under the condition of continuing to stir, concentrating ethylene glycol to 0.8 times the total mass of the element powder. Stir mechanically with a rotating shaft. The above process is to make all the elemental powders can b...

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Abstract

The invention discloses a mechanical alloying preparation method for niobium-silicon powder. The mechanical alloying preparation method comprises the following steps: selecting proper powder, adding the powder into ethylene glycol, stirring, concentrating, adding the mixture into a high-energy planetary ball mill, and carrying out ball milling by adopting grinding balls of different sizes, wherein glucose is used as an antioxidant to perform variable-angle ball milling. According to the method, the oxidation phenomenon in the alloying process is inhibited, and the uniformity of the components in the alloying process is improved.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a method for preparing niobium-silicon powder by mechanical alloying. Background technique [0002] NbSi alloy, also known as NbSi compound-based ultra-high temperature alloy, is an alloy composed of base metal niobium, alloying element silicon and other alloying elements. It has good room temperature fracture toughness, high temperature strength, high temperature creep strength and high temperature oxidation resistance. At the same time, it has the advantages of high melting point and moderate density, so it is expected to become an ultra-high temperature structural material applied above 1350 °C, and is becoming one of the excellent candidate structural materials in the contemporary aerospace industry, civil industry and other fields, especially in aeroengine blades. The field has broad application prospects. 3D printing, or additive manufacturing, is a...

Claims

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Application Information

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IPC IPC(8): B22F9/04B33Y70/00C22C27/02
CPCB22F9/04B22F2009/041B22F2009/042B22F2009/043B33Y70/00C22C27/02
Inventor 王茜于奋强刘喜刘家旭
Owner QINGDAO R & D INST XIAN JIAOTONG UNIV
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