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A method for directly preparing high-temperature superconducting flat calcined target blanks by isostatic pressing

A high-temperature superconducting and isostatic pressing technology, used in manufacturing tools, ceramic molding machines, etc., can solve the problems of difficulty in stable control of yield and quality, restricting the engineering preparation of superconducting targets, and high cost, and achieves less processing. , The effect of improving quality and simplifying process

Active Publication Date: 2011-12-14
GRIMAT ENG INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The usual method of manufacturing target blanks is to use ordinary molding to prepare targets of different specifications. First, it is necessary to process and manufacture various supporting molds, which is costly and long-term.
In addition, limited by factors such as the pressure of the hydraulic press and the uniformity of pressure on the target blank, the engineering preparation of superconducting targets as ceramic rigid powders is severely restricted, especially for flat targets with large geometric dimensions (diameter greater than 100mm). material, its yield and quality are difficult to control stably

Method used

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  • A method for directly preparing high-temperature superconducting flat calcined target blanks by isostatic pressing
  • A method for directly preparing high-temperature superconducting flat calcined target blanks by isostatic pressing
  • A method for directly preparing high-temperature superconducting flat calcined target blanks by isostatic pressing

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Embodiment approach

[0027] Below in conjunction with accompanying drawing, a kind of implementation mode of invention mold is described in detail:

[0028] Such as figure 1 As shown, the mold of the present invention is a simple sandwich structure. It consists of upper sieve plate 1, lower sieve plate 2, upper rubber isolation plate 3, lower rubber isolation plate 4, die ring 5 and fastening bolts 6;

[0029] Such as figure 2 As shown, the upper sieve plate 1 and the lower sieve plate 2 are circular plates with the same shape, with sieve holes 9 evenly distributed on the surface, and eight bolt holes 8 are arranged symmetrically on the peripheral edge;

[0030] The upper rubber isolation plate 3 is placed under the upper sieve plate 1, the lower rubber isolation plate 4 is placed above the lower sieve plate 2, the mold ring 5 is cylindrical, and it is placed between the two upper and lower rubber isolation plates. 6 Fix the upper and lower sieve plates;

[0031] The pre-installed powder 7 is...

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Abstract

The invention proposes a method for directly preparing a high-temperature superconducting flat target blank with a definite shape by an isostatic pressing method. The method combines mold pressing and isostatic pressing techniques, and the specific steps include: filling pre-pressed powder into a mold with a set size, isostatic pressing, low-temperature annealing heat treatment and high-temperature sintering heat treatment. It is characterized by uniform compaction of the target blank (density up to 4.8g / cm3), less post-processing of direct molding, and saving of raw material powder; simple preparation of target blank tools, and the use of general machining molds instead of high-precision tools Steel molds are easy to realize and can greatly reduce the cost of mold and even target material preparation. This method is a simple, direct and low-cost method for most rigid powder compacted blanks, and has wide applicability.

Description

technical field [0001] The invention relates to a method for preparing a high-temperature superconducting target blank, in particular to a method for directly preparing a high-temperature superconducting flat target blank by using an isostatic pressing technique. This method can also be used to prepare various rigid ceramic powder shaped flat blanks by dry method without adding any additional binder. Background technique [0002] The superconducting target is a sputtering source prepared by superconducting thin film materials and coated superconducting strips. To prepare high-quality superconducting thin films, the target is one of the key materials. High-temperature superconducting thin film materials are basic materials in the field of superconducting weak current applications. They can be used in high-temperature superconducting active and passive devices such as high-performance filter devices, and have a wide range of applications. At present, high-temperature superco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B3/00C04B35/622
Inventor 华志强
Owner GRIMAT ENG INST CO LTD
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