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Molybdenum-titanium alloy neutron transparent material and preparation method thereof

A transparent material, molybdenum-titanium alloy technology, applied in the field of neutron diffraction, can solve problems such as weak noise signals, and achieve the effect of increasing the number, easy cleaning, and low adhesion

Inactive Publication Date: 2016-07-20
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Prior art 1 and 2 are also considered and referred to by the applicant in the research and development and experiments of the technical solution of the present application, but there are still weak noise signals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The molybdenum content in the neutron transparent material is 46wt%, and the titanium content is 54wt%. Mix molybdenum powder and titanium powder according to the stated ratio, mix them uniformly by ball milling, and press the steel mold to obtain a green compact. Put the green compact in a vacuum furnace for sintering, and sinter at a temperature of 1400°C for 3 hours to obtain neutron diffraction Molybdenum-titanium alloy neutron transparent material for high pressure cavity.

Embodiment 2

[0023] The content of molybdenum in the neutron transparent material is 47wt%, and the content of titanium is 53wt%. Mix molybdenum powder and titanium powder according to the stated ratio, mix them evenly by ball milling, and press the steel mold to obtain a green compact. Put the compact into an argon furnace for sintering, and sinter at a temperature of 1420°C for 3 hours to obtain a neutron Molybdenum-titanium alloy neutron-transparent materials for diffractive high-pressure cavities.

Embodiment 3

[0025] The content of molybdenum in the neutron transparent material is 48wt%, and the content of titanium is 52wt%. Mix molybdenum powder and titanium powder according to the stated ratio, mix them uniformly by ball milling, and form them by cold isostatic pressing to obtain a green compact, which is then sintered in a vacuum furnace for 2.5 hours at a temperature of 1460°C to obtain the medium Molybdenum-titanium alloy neutron-transparent material for sub-diffraction high-pressure cavity.

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Abstract

The invention belongs to the technical field of neutron diffraction, and relates to a molybdenum-titanium alloy neutron transparent material used for a neutron diffraction high-pressure cavity sealing pad and a preparation method thereof. The molybdenum-titanium alloy neutron transparent material comprises 46 wt%-56 wt% of molybdenum and the balance titanium. Compared with an existing Ti-Zr alloy sealing pad, the molybdenum-titanium alloy neutron transparent material is high in strength and capable of improving the pressure of a high-pressure cavity and increasing the quantity of high-pressure experiment samples; the neutron transmittance of the molybdenum-titanium alloy neutron transparent material is high, the neutron diffraction performance of the molybdenum-titanium alloy neutron transparent material is equivalent to that of Ti-Zr alloy, but the adhesion of the molybdenum-titanium alloy neutron transparent material to diamond is very low; and a diamond anvil cell is easy to clean after a high-pressure experiment, the service life of the diamond anvil cell can be prolonged, and the high-pressure experiment cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of neutron diffraction, and in particular relates to an alloy material used for a gasket of a neutron diffraction high-pressure cavity and a preparation method thereof. Background technique [0002] High-pressure science has developed into a new dimension of material science, providing unprecedented opportunities for cutting-edge scientific explorations such as exploring new substances, discovering new laws and new theories. At the same time, compared with X-ray diffraction, neutron diffraction has the following advantages: ① X-ray interacts with electrons, so its scattering intensity on atoms is proportional to the atomic number, while neutrons interact with atomic nuclei, it is The scattering intensity on different nuclei is not a function of the monotonous change of the atomic number, so neutrons are especially suitable for determining the position of light elements in the lattice (the sensitivity of X-ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C27/04C22C1/04
CPCC22C1/045C22C1/0458C22C14/00C22C27/04
Inventor 林涛吴朝圣金钟铃邵慧萍何新波毕延吴强侯琪玥谢鸿森徐济安
Owner UNIV OF SCI & TECH BEIJING
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