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Materials
Published in Sumit Sharma, Composite Materials, 2021
Type E:Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (~3 × 10−6/°C at 20°C), making them resistant to thermal shock, more so than any other common glass. Such glass-made is less subject to thermal stress and is commonly used for the construction of reagent bottles. Borosilicate glass is sold under such trade names as Simax, Borcam, Borosil, Suprax, Kimax, Heatex, Pyrex, Endural, Schott, or Refmex, Kimble.
Microneedles: Current Trends and Applications
Published in Tuhin S. Santra, Microfluidics and Bio-MEMS, 2020
Hima Manoj, Pallavi Gupta, Loganathan Mohan, Moeto Nagai, Syrpailyne Wankhar, Tuhin S. Santra
Silica glass is a physiologically inert and pure compound made from silicon and oxygen atoms. It has the capability to reduced brittle characteristics, which makes it suitable for the fabrication of microneedles [70]. Borosilicate glass made from silica and boron trioxide is more elastic in nature but because a manual fabrication process is used to fabricate microneedles, it is time consuming [12] and has limited application for experimental purposes [9].
Glass Fiber Composite Materials
Published in Omar Faruk , Jimi Tjong , Mohini Sain, Lightweight and Sustainable Materials for Automotive Applications, 2017
A-glass fiber is an ordinary glass made up of soda-lime silicate with little or no boron oxide and it is also known as alkali-lime glass. The letter A is derived from the word “alkali-lime.” This is the first glass used in glass fibers. E-glass fiber is formed by an alumina-calcium-borosilicate with maximum alkali oxides content of 2% used as general purpose fibers where high electrical resistivity is needed. The letter E is originally derived from the word “electrical” because this is used in all electrical applications. This has a higher thermal expansion compared to other glass fibers. C-glass fiber is mainly used in the corrosive acid environment and it has higher chemical stability. It contains alkali-lime glass with high boron oxide. D-glass fiber contains silica and boron trioxide of borosilicate glass and it has a low coefficient of thermal expansion, making it resistant to thermal shock. S-glass contains alumina-silicate without CaO, but with high MgO content. It is mainly used in higher tensile strength and modulus applications. R-glass contains calcium aluminosilicate used for reinforcement, which has higher strength and acid corrosion resistance. The weight contents of chemical composition in various glass fibers are listed in Table 7.1.
Micromachining of borosilicate glass using an electrolyte-sonicated-µ-ECDM system
Published in Materials and Manufacturing Processes, 2023
K. V. J. Bhargav, P. S. Balaji, Ranjeet Kumar Sahu
Glass is an amorphous substance that is commonly utilized in everyday life. In today’s world, glass has a wide range of applications because of properties like high strength, corrosion resistance, wear resistance, low optical absorption, extensive optical transmission range, and biocompatibility.[1] Glass comprises silica, bleaching powder, alkaline metal oxides, calcium oxide (lime), and other constituents. Although glass is a brittle material, its application in optical, communications, automotive, biomedical, art, and other fields and the ease of molding it into the desired shapes have proven to be the most promising and exciting material.[2] Glass is usually an insulator. When glass is exposed to different temperatures, the resulting stresses cause the glass to shatter. As a result, glass is susceptible to thermal stresses, resulting in workpiece damage during high-temperature machining. This feature may be changed by adding the boric acid (H3BO3) to glass, reducing the thermal expansion coefficient and preventing the glass from shattering at high temperatures. Borosilicate glass is a form of glass with boron trioxide as one of its constituents. The availability of borosilicate glass has increased the number of applications even at extremely high temperatures.