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Mould and method for processing and forming tellurium alloy ultraviolet evaporation source material

A technology for forming and forming molds, which is applied in the field of material processing and forming, can solve the problems of low melting point, difficult practical application and high brittleness of tellurium alloys, and achieves the effects of accurate size, short preparation period and reduced loss of raw materials

Inactive Publication Date: 2013-04-24
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, tellurium alloys are used abroad to make ultraviolet evaporation source materials, but due to the low melting point and high brittleness of tellurium alloys, it is difficult to form them by general processing methods, which brings great difficulties to practical applications.

Method used

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  • Mould and method for processing and forming tellurium alloy ultraviolet evaporation source material
  • Mould and method for processing and forming tellurium alloy ultraviolet evaporation source material
  • Mould and method for processing and forming tellurium alloy ultraviolet evaporation source material

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Effect test

specific Embodiment 2

[0039] The steps of the molding method for processing the tellurium alloy ultraviolet evaporation source material by using the above-mentioned mold:

[0040] (1) Metal powder: The purity of the tellurium alloy ultraviolet evaporation source powder is 99.99%, the mesh number is 200 mesh, and the tellurium-indium ratio (weight percent) Te / In in the tellurium alloy is 7:3.

[0041] (2) Powder loading: put three weighed portions of 0.05g of the above-mentioned tellurium alloy powder into the three charging holes 5 of the above-mentioned mold respectively, and tap the surroundings of the mold after loading, so that all the tellurium alloy powder in the mold into the bottom of the hole.

[0042] (3) Compression: After loading the powder, pre-press with the upper mold head 6 for 7 minutes. After the powder is compacted, a pressure of 4 MPa is applied to the upper mold on the press, and finally the powder is pressed into shape.

[0043] (4) Demoulding: After pressing and forming, re...

specific Embodiment 3

[0045] The steps of the molding method for processing the tellurium alloy ultraviolet evaporation source material by using the above-mentioned mold:

[0046] (1) Metal powder: The purity of the tellurium alloy ultraviolet evaporation source powder is 99.99%, the mesh number is 200 mesh, and the tellurium-indium ratio (weight percent) Te / In in the tellurium alloy is 4:1.

[0047] (2) Powder loading: put three weighed portions of 0.05g of the above-mentioned tellurium alloy powder into the three charging holes 5 of the above-mentioned mold respectively, and tap the surroundings of the mold after loading, so that all the tellurium alloy powder in the mold into the bottom of the hole.

[0048] (3) Pressing: After loading the powder, firstly use the upper mold head 6 to pre-press for 10 minutes. After the powder is compacted, a pressure of 5 MPa is applied to the upper mold on the press, and finally the powder is pressed into shape.

[0049] (4) Demoulding: After pressing and for...

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Abstract

The invention discloses a mould and a method for processing and forming a tellurium alloy ultraviolet evaporation source material. The mould comprises a bottom die and an upper die, wherein the bottom die comprises a left bottom die and a right bottom die which are identical in shape and size; one or more charging holes are formed at equal intervals in a central line of the upper end surface of the bottom die; and one or more pressing heads matched with the charging holes in shape and size are arranged at equal intervals in a central line of the lower end surface of the upper die. The method comprises the steps as follows: firstly, when the mould is used, positioning the left bottom die and the right bottom die by positioning pins, and fastening and assembling by bolts; secondly, adding powder into the charging holes, and applying pressures for performing the forming operation by the pressing heads of the upper die; and finally, dismounting the bolts, carefully separating the two bottom dies, and taking out a formed sample. Through the method, 0.05 g of tellurium alloy powder can be formed and processed, the size is accurate, and the forming quality can meet the forming requirement of the ultraviolet imaging technology on the ultraviolet evaporation source material.

Description

technical field [0001] The invention belongs to the field of material processing and molding, and provides a mold for processing and molding a tellurium alloy ultraviolet evaporation source material, and a molding method for processing the tellurium alloy ultraviolet evaporation source material by using the mold. Background technique [0002] In today's world, optoelectronic technology is no longer limited to visible light, and the application technology of non-visible light such as infrared light and ultraviolet light is also developing rapidly. Ultraviolet imaging technology has entered substantive research and application since the late 1980s, but the main application at that time The domain is the military domain. In the late 1990s, ultraviolet imaging technology was rapidly popularized and promoted in the civilian market, such as the daytime ultraviolet corona detection of high-voltage power equipment and transmission lines, which can detect when the surface temperature...

Claims

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Application Information

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IPC IPC(8): B22F3/03
Inventor 田文怀纪箴王保光高红叶
Owner UNIV OF SCI & TECH BEIJING