Ferroboron is an alloy material composed of boron and iron. The following is a detailed introduction to ferroboron:
1.Classification
Ferroboron can be divided into various types depending on the carbon content. The usual classification method divides it into low carbon ferroboron and medium carbon ferroboron:
Low carbon ferroboron: The carbon content is low, the specific range is C≤0.05%0.1%, and the boron content range is 9%25%. This kind of ferroboron is mainly produced by thermite method and contains relatively high aluminum content.
Medium carbon ferroboron: The carbon content is relatively high, the specific range is C≤2.5%, and the boron content ranges from 4% to 19%. This type of ferroboron is mainly produced using the silicon thermal method and has the characteristics of low aluminum content and high carbon content.
In addition, there is information that divides ferroboron into three types: low carbon, medium carbon and high carbon, covering a wider range of carbon content.
2.Physical properties
Some physical properties of ferroboron may vary depending on specific ingredients and processes, but generally have the following characteristics:
Density: The density of industrially produced ferroboron (10%20%B) is 5.86.5g/cm³.
Melting point: The melting point of ferroboron is higher and related to its composition. For example, the melting point of crystalline boron is 2079°C, while the melting point of amorphous boron may be different. The melting temperature range of ferronal alloy is usually between 1400~1550℃.
Appearance: Ferroboron has metallic luster.
3.Chemical properties
Ferroboron is chemically stable but can react with certain elements or compounds. For example, at high temperatures, iron and boron can produce two extremely stable intermediate compounds: Fe2B and FeB. Among them, FeB has two crystal forms: high temperature and low temperature.
4.Purpose
Ferroboron has wide application value in the fields of metallurgy and materials science, mainly as a strong deoxidizer and boron element additive in steelmaking production. It can significantly improve the hardenability, mechanical properties, cold deformation properties, welding properties and high temperature properties of steel. Specific application areas include:
Alloy structural steel: Ferroboron can be added to structural steel as an alloying element to improve its mechanical properties and comprehensive properties.
Spring steel: The strength and toughness of spring steel can be significantly improved by adding ferroboron.
Low-alloy high-strength steel: Ferroboron can optimize the alloy composition of low-alloy high-strength steel and improve its strength and hardness.
Heat-resistant steel and stainless steel: Ferroboron, as an important alloy additive, can improve the heat resistance and corrosion resistance of heat-resistant steel and stainless steel.
In addition, ferron boron can also be used in the manufacture of amorphous alloys, permanent magnet materials, and the atomic energy industry.