Iron-silicon-boron alloy

CARBIDES. A binary solid compound of carbon and another element. The most familiar carbides are those of calcium, tungsten, silicon, boron, and iron (cemcntitc) Two factors have an important bearing on the properties of carbides (1) the difference in electronegativity between carbon and the second elemenl. and (2) whether the second element is a transition metal. Saltlike carbides of alkali metals are obtained by reaction with acetylene. Those ohlained from silver, copper, and mercury sails are explosive. See also Carbon and Iron Metals, Alloys, and Steels. 

Soft magnetic materials are characterized hy high permeability and low cnercivily. There are six principal groups of commercially important soft magnetic materials iron and low carbon sieels, iron-silicon alloys, iron-aluminum and iron-aluminuni-silicon alloys, nickel-iron alloys, iron-coball alloys, and ferrites. In addition, iron-boron-hased amorphous soft magnetic alloys are commercially available. Table I summarizes tile properties of some of these materials. Table 2 summarizes properties of some ferrites. Properties of amorphous soft magnetic alloys arc listed in Table 3. 

Sainte-Claire Deville explained his results by saying that an alloy often behaves like a true solution of one metal in another. Thus it is, said he, that carbon, boron, and silicon, dissolving like metals in iron and in aluminum, separate from them in cooling, and can be obtained in the crystalline state by the use of reagents which act on the... 

The curcumin method (in either the rosocyanin or rubrocurcumin version) has been applied for determining traee amounts of boron in biologieal materials [10], soils and plants [17], waters [51], silicon [52], chlorosilanes [20], uranium [1,53], zirconium and its alloys [53,54], nickel [55,56], copper alloys [56], cast iron and steel [12,57-59], beryllium and magnesium [53], and phosphates [2]. This method was also used for determining boric acid admixtures (about 0.05%) in powdered boron [11]. Some synthetic compounds having the structure similar to that of curcumin, were used in determining boron in water [60]. 

Alloys are metallic substances containing two or more elements which are miscible when molten and do not separate when solidified. They may be liquid or solid. This mixture of elements, usually but not necessarily metals, allows careful manipulation of strength, melting point, corrosion resistance, magnetic, thermal, electrical, and other properties steel, for example, is an alloy of iron and carbon often present with nickel, chromium, copper, aluminium, boron, tungsten, manganese, cobalt, silicon, and other elements. 

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