The discovery and use of boron compounds can be traced back to the earliest ancient Egypt, such as the ancient Egyptian manufacture of glass has been the use of borax as a flux, the ancient alchemists also used borax, but the chemical composition of boric acid until the early 19th century is still a mystery.
An alloy of boron and iron.According to the carbon content, iron boron (boron content: 5-25%) can be divided into two kinds of low carbon (C ≤ 0.05% ~ 0.1%, 9% ~ 25% B) and medium carbon (C ≤ 2.5 %, 4% ~ 19% B). Ferro boron is a strong deoxidizer and boron additive in steel production. The biggest role of boron in steel is only a very small amount can significantly improve the hardenability and replace a large number of alloying elements, in addition to improving mechanical properties, cold deformation properties, welding properties and high temperature performance.
The element boron is required for the formation of ribonucleic acid, an important basic building block of life. According to James Stephenson, a postdoctoral researcher at the University of Hawaii's NASA Astrobiology Institute, "Boron may have been important for the origin of life on Earth because it stabilizes nucleic acid, which is an important component of ribonucleic acid. In early life, ribonucleic acid was thought to be the informational precursor to deoxyribonucleic acid."
Ferro Boron is an iron alloy composed of boron and iron, mainly used in steel and cast iron. Adding 0.07% B to steel can significantly improve the hardenability of steel. Boron added to 18% Cr, 8% Ni stainless steel after treatment can make precipitation hardening, improve high temperature strength and hardness. In cast iron boron will affect graphitization, thus increasing the depth of white mouth to make it cold hard wear-resistant. In malleable cast iron by adding 0.001% to 0.005% of boron, favorable formation of spheroidal graphite and improve its distribution. At present, low aluminum, low carbon iron boron is the main raw material of amorphous alloy. According to GB5082-87 standard, our iron boron is divided into two categories of low carbon and medium carbon.
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