Properties and Application of Borosilicate Glass
Borosilicate glass has many excellent properties, some properties are non-metallic glass and metal crystals do not have.
Borosilicate glass has a higher strength than the general borosilicate. Such as amorphous Fe80B20, the breaking strength of 3700MPa, is the general structural steel 7 times, is close to the ideal whisker level; thickness of only 2 ~ 3μm borosilicate glass ribbon, can still maintain a very high strength, Elasticity is better than the average metal, the full strength of up to 50% or more; while maintaining high strength, borosilicate glass also has a high toughness to amorphous Pb80Si20 as an example. When the breaking strength of 2650MPa, the deformation can still be 30% to 50% of the cold rolling processing, Vickers hardness (Hv) up to 1000MPa or so, the equivalent of high hardness tool steel level, can support high-strength wear magnetic head. In addition, borosilicate glass generally has a high resistivity (greater than 100Ω · cm at room temperature), the resistivity temperature coefficient is also very small (less than ± 10-4 / ℃), can greatly reduce the material eddy current loss, Electronics and power industry has a very important application.
Soft magnetic alloy borosilicate glass effective permeability can be compared with the crystalline state, while the resistivity is higher than the crystalline alloy, can greatly reduce the transformer loss and improve the use of frequency. Borosilicate glass also has excellent anti-radiation (neutron, γ-ray, etc.) characteristics, so that they in the rocket, aerospace, nuclear reactors and other fields with special application prospects.
In application development, due to borosilicate glass low friction, high strength and anti-wear and other special properties, so that it will be in space exploration play a more important role.
In terms of military engineering, borosilicate glass has become a new material for the production of armor-piercing ammunition because of its high insulation heat shear sensitivity and higher strength and very good elasticity. The acoustic impedance characteristics and high elastic properties of bulk borosilicate glasses are also likely to be used as interlayers for composite armor to provide military tanks, fighters, ships or other equipment to provide the ability to prevent conventional weapon attacks The
In the field of electronic information, with the rapid development of nanotechnology, borosilicate glass will be indispensable micro-assembly materials, in the electronics, microelectronics and integrated circuits and other areas of application prospects, such as computers, networks, communications and industry Automation and so on. A variety of electronic equipment, a large number of applications start power, the current direction of development is light, thin, small and highly integrated, the means used is high-frequency electronic technology. This requires that the transformer and the inductor and soft magnetic core for high frequency applications. With the high saturation magnetic induction, high permeability, low loss, easy processing of massive borosilicate glass has obvious advantages, used in computer power supply in the saturable core, electromagnetic interference absorption components, planar transformers E-type core and distribution transformer winding winding core and so on.
Borosilicate glass has a higher strength than the general borosilicate. Such as amorphous Fe80B20, the breaking strength of 3700MPa, is the general structural steel 7 times, is close to the ideal whisker level; thickness of only 2 ~ 3μm borosilicate glass ribbon, can still maintain a very high strength, Elasticity is better than the average metal, the full strength of up to 50% or more; while maintaining high strength, borosilicate glass also has a high toughness to amorphous Pb80Si20 as an example. When the breaking strength of 2650MPa, the deformation can still be 30% to 50% of the cold rolling processing, Vickers hardness (Hv) up to 1000MPa or so, the equivalent of high hardness tool steel level, can support high-strength wear magnetic head. In addition, borosilicate glass generally has a high resistivity (greater than 100Ω · cm at room temperature), the resistivity temperature coefficient is also very small (less than ± 10-4 / ℃), can greatly reduce the material eddy current loss, Electronics and power industry has a very important application.
Soft magnetic alloy borosilicate glass effective permeability can be compared with the crystalline state, while the resistivity is higher than the crystalline alloy, can greatly reduce the transformer loss and improve the use of frequency. Borosilicate glass also has excellent anti-radiation (neutron, γ-ray, etc.) characteristics, so that they in the rocket, aerospace, nuclear reactors and other fields with special application prospects.
In application development, due to borosilicate glass low friction, high strength and anti-wear and other special properties, so that it will be in space exploration play a more important role.
In terms of military engineering, borosilicate glass has become a new material for the production of armor-piercing ammunition because of its high insulation heat shear sensitivity and higher strength and very good elasticity. The acoustic impedance characteristics and high elastic properties of bulk borosilicate glasses are also likely to be used as interlayers for composite armor to provide military tanks, fighters, ships or other equipment to provide the ability to prevent conventional weapon attacks The
In the field of electronic information, with the rapid development of nanotechnology, borosilicate glass will be indispensable micro-assembly materials, in the electronics, microelectronics and integrated circuits and other areas of application prospects, such as computers, networks, communications and industry Automation and so on. A variety of electronic equipment, a large number of applications start power, the current direction of development is light, thin, small and highly integrated, the means used is high-frequency electronic technology. This requires that the transformer and the inductor and soft magnetic core for high frequency applications. With the high saturation magnetic induction, high permeability, low loss, easy processing of massive borosilicate glass has obvious advantages, used in computer power supply in the saturable core, electromagnetic interference absorption components, planar transformers E-type core and distribution transformer winding winding core and so on.
In the medical and biological aspects, borosilicate glass because of good biocompatibility and no allergic reactions, can be used for surgical scalpels, artificial bones, in vivo biosensing materials and artificial teeth.
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