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Two-dimensional continuous component sample, and preparing method and application thereof in quick determination of phase diagram high flux

A sample and sample block technology, applied in the field of materials, its preparation, and heterogeneous materials, can solve the problem of limiting the number of samples of different components, and achieve the effect of increasing the number

Active Publication Date: 2016-08-24
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Chinese patent application CN102643096B discloses a method and device for preparing gradient materials with continuously changing components. However, the components change in one dimension, which limits the number of samples with different components per unit area.

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  • Two-dimensional continuous component sample, and preparing method and application thereof in quick determination of phase diagram high flux
  • Two-dimensional continuous component sample, and preparing method and application thereof in quick determination of phase diagram high flux
  • Two-dimensional continuous component sample, and preparing method and application thereof in quick determination of phase diagram high flux

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Embodiment 1

[0047] In this embodiment, see Figure 1~3 , The two-dimensional continuous composition sample takes the PbTe-PbSe-SrSe ternary system phase relationship as an example. First, the composition distribution should be prepared as figure 1 For the equilateral triangle thin slice sample shown, in order to meet the sampling needs of the scanning electron microscope, the side length of the sample is AB=BC=CA=10mm. Assuming that the three components of the phase diagram are A, B, and C, we also mark the three vertices of the triangle as A, B, and C at the same time. At the vertices, one of the three components is 100%, and the others The dual component is 0%. For example, at point A, the composition of component A is 100%, and the composition of component B and C is 0. At any point O on the triangle, we make three lines that pass through the point O and parallel to the three sides of the triangle. Suppose the intersections of these three lines with the AB, BC and CA sides are respecti...

Embodiment 2

[0055] This embodiment is basically the same as the first embodiment, and the special features are:

[0056] In this embodiment, the method for forming the two-dimensional continuous component sample is implemented by the solid-phase reaction method. The two-dimensional continuous component sample is formed by stacking three wedge-shaped powders with an angle of 120 degrees each other formed by three single components. It includes the following steps:

[0057] a. Use as figure 2 As shown in the mold with a triangular prism cavity, the cross section of the mold cavity is an equilateral triangle, and the bottom surface of the mold cavity is an equilateral triangle. A computer-controlled sampling system is used. Starting from the opposite side of vertex A of the equilateral triangle, fill the PbTe powder into the mold cavity. For the PbTe powder filled into the mold cavity, start from the vertex A of the triangle on the bottom of the cavity and be perpendicular to it. In the opposi...

Embodiment 3

[0062] This embodiment is basically the same as the previous embodiment, and the special features are:

[0063] In this embodiment, the two-dimensional continuous component sample still uses the PbTe-PbSe-SrSe ternary system phase relationship as an example. First, the component distribution should be prepared as shown in the attached file. figure 1 For the equilateral triangle sample shown, in order to meet the sampling needs of the scanning electron microscope, the side length of the sample is AB=BC=CA=10mm. Specifically to the PbTe-PbSe-SrSe ternary system, set x=Cb / AC, y=Ac / AB, z=Ba / BC, then the composition of any point on the sample triangle is (PbTe)x(PbSe)y(SrSe )z. The forming method of the two-dimensional continuous component sample is implemented by the 3d printing method, which specifically includes the following steps:

[0064] ① Choose a 3D printing system with 3 precise screw powder feeder channels, each channel conveys a single component powder of PbTe, PbSe or SrSe...

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Abstract

The invention discloses a two-dimensional continuous component sample and a preparing method and application thereof in quick determination of phase diagram high flux. The two-dimensional continuous component sample is a sheet in an equilateral triangle shape, and the component distribution of the two-dimensional continuous component sample is the same as that of a ternary phase diagram expressed by the equilateral triangle. The two-dimensional continuous component sample can be prepared with a solid reaction method, a 3d printing method and a slurry or turbid liquid mixing method, and is subjected to annealing or quenching at the proper temperature to meet the application of phase diagram determination and material screening. According to the two-dimensional continuous component sample and the preparing method and application thereof in quick determination of phase diagram high flux, the number of samples, with different components, synthesized at a single time can be greatly increased, and higher-flux sample support can be provided for high-flux material screening and ternary phase diagram quick determination.

Description

technical field [0001] The invention relates to a material, its preparation method and application, in particular to a heterogeneous material, its preparation method and application, and is applied in the technical field of composition gradient material preparation and application. Background technique [0002] A phase diagram is also called a phase state diagram and a phase equilibrium state diagram. It is a diagram used to represent the relationship between the composition of a phase equilibrium system and some parameters (such as temperature and pressure). It reflects the phase equilibrium law of matter with geometric figures, and shows the relationship between the state of the material system and temperature, pressure and composition. It is an important basis for studying the state, properties, separation, purification and synthesis of materials, so it is widely used in the fields of geology, physics, chemistry, chemical industry, metallurgy and material science. Howeve...

Claims

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Application Information

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IPC IPC(8): G01N23/20G01N23/223G01N1/28
CPCG01N1/286G01N23/20G01N23/223
Inventor 罗宏杰骆军张继业曹世勋吴立华张文清
Owner SHANGHAI UNIV
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