Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of high-purity silicon hexaboride powder

A technology of powder preparation and silicon hexaboride, applied in the direction of boron/boride, etc., can solve the problems of difficult reaction and low reaction heat effect of boron-silicon system, and achieve the effect of high chemical purity

Active Publication Date: 2016-11-09
福斯曼科技(北京)有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction heat effect of the borosilicate system is low, and experiments have found that self-sustaining reactions are difficult to occur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high-purity silicon hexaboride powder
  • Preparation method of high-purity silicon hexaboride powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 287 grams of silicon powder with an average particle size below 10 microns and 700 grams of boron powder below 20 microns with a ceramic ball mill;

[0025] After loading the crucible, put it into a gas shielded furnace, pass in argon, raise the temperature to 1400°C, and keep it warm for 60 minutes;

[0026] Drop SiCl into the furnace at the beginning of the heat preservation 4 , 5ml per minute, dripping time is 10 minutes;

[0027] After cooling, the final SiB was obtained by ball milling in a ceramic jar 6 powder product.

Embodiment 2

[0029] Mix 292 grams of silicon powder with an average particle size below 10 microns and 700 grams of boron powder below 20 microns with a ceramic ball mill;

[0030] After loading the crucible, put it into a gas protection furnace, pass in argon, raise the temperature to 1600°C, and keep it warm for 60 minutes;

[0031] Drop SiCl into the furnace at the beginning of the heat preservation 4 , 3ml per minute, dripping time is 10 minutes;

[0032] After cooling, the final SiB was obtained by ball milling in a ceramic jar 6 powder product.

Embodiment 3

[0034] Mix 290 grams of silicon powder with an average particle size below 10 microns and 700 grams of boron powder below 20 microns with a ceramic ball mill;

[0035] After loading the crucible, put it into a gas shielded furnace, pass in argon, raise the temperature to 1500°C, and keep it warm for 60 minutes;

[0036] Drop SiCl into the furnace at the beginning of the heat preservation 4 , 4ml per minute, dripping time is 10 minutes;

[0037] After cooling, the final SiB was obtained by ball milling in a ceramic jar 6 powder product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of high-purity silicon hexaboride powder. The preparation method comprises the following steps that silicon powder with the average particle size smaller than 10 microns and boron powder with the average particle size smaller than 20 microns are weighed according to a proportion; ball milling and uniform mixing are performed; the materials are loaded into a ceramic crucible; the ceramic crucible is loaded into a synthetic furnace; argon gas is introduced; SiCl4 is dropped; heating is performed to 1500 to 1600 DEG C; after cooling, the ball milling is performed to obtain required SiB6 powder. The single-phase SiB6 powder with high chemical purity and pure phase can be prepared by the method.

Description

technical field [0001] The invention belongs to the technical field of special powder preparation, and relates to a method for preparing silicon hexaboride powder by using powder as a raw material. Background technique [0002] Silicon hexaboride is a special material, mainly used in product development in electronics and military industry. It requires high chemical purity, and its phase is single-phase silicon hexaboride. [0003] In principle, combustion synthesis or self-propagating high-temperature synthesis is a method for synthesizing intermetallic compounds using the exothermic reaction of elements / compounds, and is a common method for synthesizing special powders. However, the reaction heat effect of the borosilicate system is low, and experiments have found that self-sustaining reactions are difficult to occur. Therefore, it is necessary to develop a new method to synthesize this silicon hexaboride powder. Contents of the invention [0004] The invention provid...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B35/02
CPCC01B35/02C01P2002/72C01P2006/80
Inventor 郑贵林武桂燕林涛
Owner 福斯曼科技(北京)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com