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Synthesis method of SiC/SiO2 nanowire reinforcement body

A synthesis method and reinforcement technology, applied in the direction of silica, carbide, silicon oxide, etc., can solve the problems of complex synthesis methods, large reaction randomness, and low yield, and achieve high raw material utilization and controllability Good, easy to operate effect

Active Publication Date: 2013-04-03
内蒙古海特华材科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is in order to solve existing SiC / SiO 2 The synthesis method of nanomaterials is complicated, the yield is low and the problem of randomness of the reaction is large, and a SiC / SiO 2 Synthetic method of nanowire reinforcement

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  • Synthesis method of SiC/SiO2 nanowire reinforcement body
  • Synthesis method of SiC/SiO2 nanowire reinforcement body

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specific Embodiment approach 1

[0016] Specific embodiment one: this embodiment SiC / SiO 2 The synthesis method of nanowire reinforcement is implemented in the following steps:

[0017] 1. The percentage of massage is 5%~40% silicon powder, 5%~40% SiO 2 Mix evenly with 45%~85% of carbon nanotube powder to obtain a mixed powder;

[0018] 2. Put the mixed powder obtained in step 1 in a tube furnace or a sintering furnace, in an argon atmosphere, heat up to a temperature of 1100~1500°C and keep it for 1-8h to obtain a sintered mixed powder;

[0019] 3. Place the sintered mixed powder obtained in step 2 in a heating device, and keep it at a temperature of 300-800℃ for 2-10h to remove carbon to obtain SiC / SiO 2 Nanowire reinforcement;

[0020] The fineness of silicon powder mentioned in step one is 100-300 mesh, SiO 2 The particle size of the powder is less than 80nm, the diameter of the carbon nanotubes is 20-40nm, and the length is 5-15μm.

[0021] The raw material silicon powder and SiO used in this embodiment 2 Both pow...

specific Embodiment approach 2

[0022] Specific embodiment two: this embodiment is different from specific embodiment one in that in step one, 15%-20% silicon powder and 15%-20% SiO 2 Mix with 60%~70% carbon nanotube powder evenly. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Specific embodiment three: this embodiment is different from specific embodiment one in that in step one, 17% silicon powder and 17% SiO 2 Mixed with 66% carbon nanotube powder evenly. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention relates to a synthesis method of an SiC / SiO2 nano material, particularly a synthesis method of an SiC / SiO2 nanowire reinforcement body. The invention aims to solve the problems of complex synthesis method, low yield and great reaction randomness in the existing SiC / SiO2 nano material. The synthesis method comprises the following steps: 1. mixing silicon powder, SiO2 and carbon nanotube powder in mol percentage to obtain a powder mixture; 2. putting the powder mixture in a pipe furnace or sintering furnace, and sintering the powder mixture at 1100-1500 DEG C in an argon atmosphere; and 3. sintering the powder mixture in a heating apparatus, and keeping the temperature to remove carbon, thereby obtaining the SiC / SiO2 nanowire reinforcement body. The synthesis method provided by the invention has the advantages of simple technique, high product reproducibility, favorable controllability and high yield (up to higher than 80%). The invention is mainly used for synthesizing metal-base composite reinforcement body SiC / SiO2 nano materials.

Description

Technical field [0001] The invention relates to a SiC / SiO 2 Nano material synthesis method, specifically a method for large-scale, high-yield synthesis of SiC / SiO 2 Nanomaterials approach. Background technique [0002] Compared with traditional metal materials, metal matrix composites reinforced with ceramic fibers or nanowires have many excellent properties, such as: high specific strength, high specific stiffness, light weight, low or close to zero thermal expansion coefficient and good Corrosion resistance, etc. Among many reinforcements such as silicon carbide, alumina and borate systems, β-SiC reinforced metal matrix composites are generally considered to have the best comprehensive performance. They are used in the fields of national aerospace technology, electronic communications, and transportation. Broad demand. However, a common problem in metal matrix composite materials is that the interface between the reinforcement and the metal is poor and the bonding strength is...

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Application Information

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IPC IPC(8): C01B31/36C01B33/12C01B32/97
Inventor 王志江矫金福徐用军姜兆华
Owner 内蒙古海特华材科技有限公司
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