Manufacturing method for casting metal lithium target

A metal lithium and target material technology, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve the problems of low pass rate of flaw detection, shrinkage cavity, porosity, etc., so as to improve the pass rate of flaw detection. High density, simple and convenient process

Inactive Publication Date: 2016-02-24
GEMCH MATERIAL TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the products prepared by traditional casting methods will have pores, shrinkage cavities and other phenomena, which makes the pass rate of flaw detection not high

Method used

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  • Manufacturing method for casting metal lithium target

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preparation example Construction

[0021] In the present invention, the preparation method comprises:

[0022] 1) Prepare the casting mold of metal lithium according to the required size, as attached figure 1 As shown, wherein, the middle part of the mold 2 is a stainless steel liner 1, and the stainless steel liner 1 is used to inject cooling liquid 4, and there is a casting metal lithium 5 for liquid metal lithium in the interlayer between the mold 2 and the stainless steel liner 1 , after solidification and forming, the shape is processed to form a metal lithium rotating target of the target size;

[0023] 2) Take the solid metal lithium of the required quality as a raw material, heat it to make it melt into a liquid state, and prepare for the casting process;

[0024] 3) In the temperature range of 200-230°C, slowly pour liquid cast metal lithium from above the mold. During the process of pouring metal lithium, slowly inject cooling liquid into the central stainless steel liner, the purpose is to make the ...

Embodiment 1

[0031] According to the required size, the inner diameter of the stainless steel liner 1 is 125mm, the outer diameter is 133mm, and the inner diameter of the mold 2 is 151mm. Take the required quality of solid metal lithium as the raw material, heat it to melt it into a liquid state, and at a temperature of 200°C Casting is carried out under the mold, that is, slowly pouring liquid metal lithium into the interlayer between the stainless steel liner 1 and the mold 2 from above the mold at a speed of 8kg / min. During the process of pouring metal lithium, in the stainless steel liner Slowly pour the cooling liquid, the time lag does not exceed 2min, the cooling liquid injection speed is 10L / min, the liquid cast metal lithium is solidified and formed to form a metal lithium target, the purpose is to make the liquid metal lithium slowly directional cooling and solidification from bottom to top, This is beneficial to eliminate the lower pores and shrinkage cavities; after all the soli...

Embodiment 2

[0033] According to the required size, the inner diameter of the stainless steel liner 1 is 125mm, the outer diameter is 133mm, and the inner diameter of the mold 2 is 160mm. Take the required quality of solid metal lithium as the raw material, heat it to melt it into a liquid state, and at a temperature of 250°C Casting, that is, slowly pouring liquid pouring metal lithium into the interlayer between the stainless steel liner 1 and the mold 2 from above the mold at a speed of 8kg / min, during the process of pouring metal lithium, slowly pouring into the stainless steel liner The cooling liquid is poured in, the time lag is not more than 2min, and the injection speed of the cooling liquid is 8L / min. The liquid cast metal lithium is solidified and formed to form a metal lithium target. The purpose is to make the liquid metal lithium slowly and directionally cool and solidify from bottom to top. It is beneficial to eliminate the lower air holes and shrinkage cavities; after all so...

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Abstract

Provided is a manufacturing method for casting a metal lithium target. A casting die for metal lithium is prepared according to the needed size, a stainless steel liner tube is located in the middle of the die, and cooling liquid can be injected into the stainless steel liner tube; liquid metal lithium is injected into a sandwich layer between the die and the stainless steel liner tube, and after the liquid metal lithium is solidified and formed, a metal lithium rotating target of the target size is formed through outline processing. The bottom-to-top directional solidification manner is adopted, the process is simple and convenient, and the high-purity metal lithium target which is small in grain size and high in compactness can be manufactured by eliminating air holes and shrinkage cavities in the metal lithium target. Casting conditions are optimized in the casting process, the flaw detection yield of the metal lithium target can be increased, and therefore the metal lithium target can be better applied to electrochromic glass.

Description

technical field [0001] The invention relates to the C23C sputtering target coating technology in the IPC classification, which adopts a casting process to prepare a high-purity metal lithium sputtering target, which is applied to the production of electrochromic glass, especially the casting preparation method of the metal lithium target. Background technique [0002] Lithium metal is a rare element with a density of 0.534g / cm 3 , is the lightest metal. The melting point is 180.54°C and the boiling point is 1317°C. Soft, tough, good ductility, good chemical activity, high negative potential, high specific energy, can react with a large number of inorganic reagents and organic reagents, and react violently with water, so it can only be stored in paraffin oil. It is easy to react with hydrogen at about 500°C. It is the only alkali metal that can generate stable enough to melt and not decompose hydride. The ionization energy is 5.392 electron volts. It can combine with oxygen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/34
CPCC23C14/3414
Inventor 曹兴民庄志杰
Owner GEMCH MATERIAL TECH SUZHOU
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