Neutron diffraction sample chamber

A sample chamber and neutron technology, applied in the field of neutron diffraction, can solve problems such as affecting data quality, precipitation of silicon in quartz tubes, explosion, etc., and achieve the effect of eliminating interference and improving reliability.

A sample chamber and neutron technology, applied in the field of neutron diffraction, can solve problems such as affecting data quality, precipitation of silicon in quartz tubes, explosion, etc., and achieve the effect of eliminating interference and improving reliability.

CN101386933AInactive Publication Date: 2009-03-18CHINA INSTITUTE OF ATOMIC ENERGY
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Embodiment Construction

[0010] The technical solution provided by the present invention will be further elaborated below in conjunction with specific embodiments.

[0011] A neutron diffraction zero-base sample chamber, the material used is titanium-zirconium alloy, wherein the weight ratio of titanium to zirconium is 65-69% zirconium, 31-35% titanium, and the preferred scheme is that the weight ratio of titanium to zirconium is 68% zirconium, 32% titanium.

[0012] In the specific preparation, select titanium and zirconium raw materials with a purity of not less than 99.5%, and put them into an electric arc furnace for multiple melting according to the above ratio to form a Ti-Zr alloy ingot with zero base composition, and then go through forging, heat treatment, and mechanical processing and other processes to process a neutron diffraction zero-base sample chamber that meets the specifications. The wall thickness of the sample chamber should be less than or equal to 0.6mm, preferably 0.4-0.6mm.

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Abstract

The invention belongs to the technical field of neutron diffraction and discloses a neutron diffraction zero-substrate sample chamber which is made from titanium-zirconium alloy, wherein the weight proportion of titanium and zirconium is 65 to 69 percent of the zirconium and 31 to 35 percent of the titanium. Therefore, the sample chamber eliminates the interference caused by the prior stainless steel or quartz sample chamber on diffraction information of samples, and improves the reliability of diffraction data.

Description

technical field [0001] The invention belongs to the technical field of neutron diffraction, and in particular relates to an alloy material used in a neutron diffraction sample chamber. Background technique [0002] Using neutron diffraction technology to study the hydrogen absorption and desorption process of hydrogen storage materials needs to be carried out at a certain temperature and pressure, so the requirements for the sample chamber are relatively strict, and it needs to be able to be sealed and resistant to high temperature and pressure. At present, the commonly used sample chambers in neutron diffraction experiments in the world are made of quartz tubes or stainless steel tubes. These two kinds of sample chambers have their own shortcomings, for example, the quartz tube itself will produce diffuse scattering packets on the diffraction peak, and some hydrogen storage materials will also be amorphous due to the absorption of hydrogen or deuterium, that is to say, hydr...

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Application Information

Patent Timeline
18 Mar 2009
Publication
CN101386933A
IPC
C22C16/00; G01N23/20
Inventors
孙凯; 吴二冬