Global High-purity Amorphous Boron Market Professional Survey Report 2016
Chapters
1 Industry Overview of High-purity Amorphous Boron 1.1 Definition and Specifications of High-purity Amorphous Boron 1.1.1 Definition of High-purity Amorphous Boron Boron can be prepared in several crystalline and amorphous forms. Well known crystalline forms are α-rhombohedral, β-rhombohedral, and β-tetragonal. In special circumstances, boron can also be synthesized in the form of its α-tetragonal, and γ-orthorhombic allotropes. Two amorphous forms, one a finely divided powder and the other a glassy solid, are also known. Although at least 14 more allotropes have been reported, these other forms are based on tenuous evidence or have not been experimentally confirmed, or are thought to represent mixed allotropes, or boron QYResearch sales@qyresearch.com www.qyresearch.com +1-6262952442; +86-1082945717
frameworks stabilized by impurities. Whereas the β-rhombohedral phase is the most stable and the others are metastable, the transformation rate is negligible at room temperature, and thus all five phases can exist at ambient conditions. Amorphous powder boron and polycrystalline rhombohedral β-boron are the most common forms. The latter allotrope is a very hard[n 1] grey material, about ten percent lighter than aluminium and with a melting point (2080 °C) several hundred degrees higher than that of steel. Amorphous boron contains B12 regular icosahedra that are randomly bonded to each other without long range order. Pure amorphous boron can be produced by thermal decomposition of diborane at temperatures below 1000 °C. Annealing at 1000 °C converts amorphous boron to βrhombohedral boron. Amorphous boron nanowires (30–60 nm thick) or fibers can be produced by magnetron sputtering and laser-assisted chemical vapor deposition, respectively; and they also convert to β-rhombohedral boron nanowires upon annealing at 1000 °C. High purity amorphous boron powder is black whereas impure samples have a brown appearance. Due to its special combination of properties as well as the ability to absorb neutrons, large quantities of amorphous boron are used in pyrotechnics. For example, it is to be used as an additive in solid-fuel rocket propellant and explosives, in initiators for airbags and belt pretensioners, and as an additive in pyrotechnical mixtures. In addition, as a powerful reducing agent it can also be added to certain soldering agents as a flux or additive. Other application areas include the manufacture of high-purity metal borides and use as a sintering additive for silicon carbide high-performance ceramics.
Figure Picture of High-purity Amorphous Boron
Source: QYR Chemical & Material Research Center, Oct 2016
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1.1.2 Specifications of High-purity Amorphous Boron Table Product Specifications of High-purity Amorphous Boron B Powder Purity:
Usually 90.00%-99.999%
B Powder APS:
1- 2 um
B Powder Color:
Brown
B Powder Bulk density (g/cm3):
1.73
B Powder Melt Point (oC):
2400
B Powder Boiling point (oC):
2700
B Powder Hardness (Mohs):
9.5
Source: QYR Chemical & Material Research Center, Oct 2016
1.2 Classification of High-purity Amorphous Boron Table Classification of High-purity Amorphous Boron by Purity Purity
Description
1
92%-95%
Be widely used in the field of research, industrial.
2
95%-99%
Good reliability and good balance,be widely used in the field of solid fuel
3
>99%
Higher purity was used in laboratory. etc
4
Others
Such as used in Ignition
Source: QYR Chemical & Material Research Center, Oct 2016
1.3 Applications of High-purity Amorphous Boron Table Applications of High-purity Amorphous Boron Applications
Description
1
Industrial field
Including Nuclear industry; Pharmaceutical industry; Ceramic industry; Electronics industry; Automotive airbags; Special alloy
2
Aerospace and the military field.
Mainly used as a solid fuel, high requirements
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for product purity 3
Others
Such as the field of medical and scientific research
Source: QYR Chemical & Material Research Center, Oct 2016
1.4
Industry
Chain
Structure
of
High-purity
Amorphous Boron Figure Industry Chain Structure of High-purity Amorphous Boron
Source: QYR Chemical & Material Research Center, Oct 2016
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1.5 Industry Overview and Major Regions Status of High-purity Amorphous Boron 1.5.1 Industry Overview of High-purity Amorphous Boron Table Global High-purity Amorphous Boron Major Manufacturers Manufacturers
Website
Source: QYR Chemical & Material Research Center, Oct 201]
2 Manufacturing Cost Structure Analysis of High-purity Amorphous Boron
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2.1 Raw Material Suppliers and Price Analysis of High-purity Amorphous Boron Table Raw Material Suppliers and Price Analysis Major Materials
Raw
Raw Materials Major Suppliers
Website
Magnesite powder
Boron oxide
Source: QYR Chemical & Material Research Center, Oct 2016
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2.6 Manufacturing Process Analysis of High-purity Amorphous Boron Figure Manufacturing Process Analysis of High-purity Amorphous Boron
Source: QYR Chemical & Material Research Center, Oct 2016 QYResearch sales@qyresearch.com www.qyresearch.com +1-6262952442; +86-1082945717
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