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Co nano-point @ BN nanosphere compound and application of Co nano-point @ BN nanosphere compound in wave-absorbing coating layer

A technology of nanospheres and nanodots, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of clusters and uneven distribution of metal nanomaterials, and achieve uniform distribution and excellent Electromagnetic absorption capability, easy to control effect

Inactive Publication Date: 2018-10-12
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to overcome the problem of uneven distribution and clustering of metal nanomaterials in BN in the prior art, and provides a Co nanodot in which metal nanomaterials are evenly distributed in BN and effectively exert the size effect and interface effect of nanomaterials. @BN nanosphere complex

Method used

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  • Co nano-point @ BN nanosphere compound and application of Co nano-point @ BN nanosphere compound in wave-absorbing coating layer
  • Co nano-point @ BN nanosphere compound and application of Co nano-point @ BN nanosphere compound in wave-absorbing coating layer
  • Co nano-point @ BN nanosphere compound and application of Co nano-point @ BN nanosphere compound in wave-absorbing coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A Co nanodot@BN nanosphere composite includes BN nanospheres and Co nanodots, and the Co nanodots are embedded in the BN nanospheres.

[0035] The preparation method of the Co nanodot@BN nanosphere composite is as follows:

[0036] Using tungsten as the cathode, the composition of the consumed anode target is a cobalt-boron powder block pressed by pure cobalt powder and boron powder, and the mass percentage of cobalt in the cobalt-boron powder block is 10%, and the cobalt-boron powder The block is placed on the cooling water platform, and the furnace body and the anode placement platform are cooled by passing water; then the distance between the cathode tungsten electrode and the anode target cobalt-boron powder block is adjusted to 30mm, and then the liquid is placed around the anode platform. Nitrogen cooling wall, keep a distance of 10 cm between the liquid nitrogen cooling wall and the anode target, and then evacuate the entire working chamber to vacuum through the ...

Embodiment 2

[0039] A Co nanodot@BN nanosphere composite includes BN nanospheres and Co nanodots, and the Co nanodots are embedded in the BN nanospheres.

[0040] The preparation method of the Co nanodot@BN nanosphere composite is as follows:

[0041] Using tungsten as the cathode, the composition of the consumed anode target is a cobalt-boron powder block made of pure cobalt powder and boron powder. The mass percentage of cobalt in the cobalt-boron powder block is 20%. The cobalt-boron powder The block is placed on the cooling water platform, and the furnace body and the anode placement platform are cooled by water; then the distance between the cathode tungsten electrode and the anode target cobalt-boron powder block is adjusted to 2mm, and then the liquid is placed around the anode platform. Nitrogen cooling wall, keep a distance of 5 cm between the liquid nitrogen cooling wall and the anode target, and then evacuate the entire working chamber to vacuum through the vacuum system, and fe...

Embodiment 3

[0044] A Co nanodot@BN nanosphere composite includes BN nanospheres and Co nanodots, and the Co nanodots are embedded in the BN nanospheres.

[0045] The preparation method of the Co nanodot@BN nanosphere composite is as follows:

[0046] Using tungsten as the cathode, the composition of the consumed anode target is a cobalt-boron powder block pressed by pure cobalt powder and boron powder. The mass percentage of cobalt in the cobalt-boron powder block is 15%. The cobalt-boron powder The block is placed on the cooling water platform, and the furnace body and the anode placement platform are cooled by passing water; then the distance between the cathode tungsten electrode and the anode target cobalt-boron powder block is adjusted to 10mm, and then the liquid is placed around the anode platform. Nitrogen cooling wall, keep a distance of 7 cm between the liquid nitrogen cooling wall and the anode target, and then evacuate the entire working chamber to vacuum through the vacuum sy...

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Abstract

The invention relates to the technical field of material preparation, and discloses a Co nano-point @ BN nanosphere compound and an application of the Co nano-point @ BN nanosphere compound in a wave-absorbing coating layer. The Co nano-point @ BN nanosphere compound comprises BN nanospheres and CO nanodots, wherein the Co nanodots are embedded into the BN nanospheres, and the Co nano-point @ BN nanosphere compound is prepared by a plasma arc method. According to the compound and the application, the metal nano material is uniformly distributed in the BN, so that the size effect and the interface effect of the nano material are effectively exerted.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a Co nano-dot@BN nano-sphere composite and its application. Background technique [0002] With the rapid development of electromagnetic technology and the miniaturization and high frequency of electronic components, electromagnetic waves of various frequency bands are flooding people's living space, causing serious electromagnetic pollution and attracting the attention of countries all over the world. Electromagnetic pollution has become the primary physical pollution of the ecological environment in the 21st century. Long-term exposure to electromagnetic radiation can increase the incidence of cancer and seriously affect human health. At the same time, electromagnetic interference also seriously affects the normal operation of electronic circuits and electronic components, causing irreparable economic losses and safety problems. To this end, the US Fed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F9/16B82Y30/00B82Y40/00H05K9/00
CPCB22F9/16B22F9/14B82Y30/00B82Y40/00H05K9/0081
Inventor 刘先国余洁意孙玉萍
Owner HANGZHOU DIANZI UNIV
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