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Silicon carbide crystal whisker generation furnace and method for producing silicon carbide crystal whisker

A silicon carbide whisker and whisker technology, which is applied in chemical instruments and methods, crystal growth, single crystal growth, etc., can solve the problems of inability to continuously produce whisker products, achieve quality assurance, simplify production processes, and save energy. Effect

Inactive Publication Date: 2008-03-26
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency that the existing technology cannot continuously produce whiskers, the invention provides a silicon carbide whisker generating furnace, which can continuously produce silicon carbide whiskers, and the produced silicon carbide whiskers can Separation at any time, pure quality

Method used

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  • Silicon carbide crystal whisker generation furnace and method for producing silicon carbide crystal whisker
  • Silicon carbide crystal whisker generation furnace and method for producing silicon carbide crystal whisker

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Embodiment Construction

[0031] Referring to Figs. 1-3, the present invention is to install one-way airtight feeding device and rotary silicon carbide whisker collector on graphite crucible in prior art industrial vacuum electric furnace.

[0032] One-way airtight feeding device includes high-temperature feeding pipe 6, one-way air-tight valve A7, feeding chamber 8, one-way air-tight valve B9, low-temperature feeding pipe 10, quantitative feeder 11 and three-way Valve A12. The low-temperature feeding pipe 10 is circular metal, and is connected to the quantitative feeder 11 through a flange. Valves A7 are connected together by flanges. The quantitative feeder 11 can continuously adjust the feeding amount, and can be a screw feeder with variable frequency speed regulation, or a vibrating feeder with variable frequency speed regulation, which is fixed on a separate platform close to the furnace body; the high temperature feeding pipe 6 is Graphite circular tube, which is inserted into the graphite cruc...

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Abstract

The invention discloses a whisker growth furnace and method. Said whisker growth furnace equips one-way air-tight feed arrangement and rotating whisker collector on the base of industrial vacuum oven, wherein continuously feeding and outputting is realized by open and close of one-way air-tight feed arrangement. The device adopts induction board to make whisker grow on it. The invention can realize continuous production and simplify generating program.

Description

technical field [0001] The present invention relates to a whisker forming furnace and also relates to a method for producing whiskers by using the whisker forming furnace. Background technique [0002] Referring to Fig. 4, the known furnace used for preparing silicon carbide whiskers is an industrial vacuum electric furnace, including a graphite crucible 1, a graphite heating body 2, an air inlet 3, a carbon felt insulation layer 4, a furnace wall 5, an air outlet 15, and an upper end cover 17. Observation hole 18, lower end cover 19, graphite backing plate 28 and graphite sealing plate 29. The graphite heating body 2 is placed in the inner layer of the industrial vacuum electric furnace, the outer layer is the furnace wall 5, and the carbon felt insulation layer 4 is between the furnace wall 5 and the graphite heating body 2, and the graphite heating body 2 and the graphite backing plate 28 are fixed at the lower end On the cover 19, the graphite crucible 1 is placed on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/36C30B29/62F27B5/04F27B14/04
Inventor 黄凤萍李贺军李克智卢锦花
Owner NORTHWESTERN POLYTECHNICAL UNIV