Iron phosphides

Eisen-oxydverbindung, /. ferric compound, iron(III) compound, -pastille, /. (Pharm.) reduced iron lozenge, -pecherz, n. limonite pitticite tripUte. -phosphor, n. iron phosphide. -probe, /. iron test iron sample, -pulver, n. iron powder, -quarz, m. ferriferous quartz, -rahm, m. a porous form of hematite. 

Phosphor-athcr, m. phosphoric ether (ester of phosphoric acid, specif, ethyl phosphate), -basis, phosphorus base, -bestimmung, /. determination of phosphorus, -blei, n. lead phosphide Min.) pyromorphite. -bombe, f. phosphorus bomb. -brandgranate, /. phosphorus incendiary shell, -brei, m. phosphorus paste, -bromid, n. phosphorus bromide, specif, phosphorus pentabromide, phos-phorus(V) bromide, -bromijr, n. phosphorus tribromide, phosphorus(III) bromide, -bronze, /. phosphor bronze, -calcium, n. calcium phosphide, -chlorid, n. phosphorus chloride, specif, phosphorus pcntachloride, phosphorus(V) chloride, -chloriir, n. phosphorous chloride (phosphorus trichloride, phosphorus(III) chloride), -dampf, tn. phosphorus vapor or fume, -eisen, n. ferrophos-phorus iron phosphide, -eisensinter, m. diadochite. 

Sweet JD, Casadonte DJ (2001) Sonochemical synthesis of iron phosphide. Ultrason Sono-chem 8 97-101... 

Iron Phosphide. Commercial iron phosphide anticorrosive pigments usually consist of Fe2P [12751-22-3], Mr 142.7, with traces of FeP and Si02. The pigment is a powder with a metallic gray color and contains 70 % Fe, 24 % P, 2.5 % Si, and 3.0 % Mn. The density is 6.53 g/cm3 and the mean particle size is ca. 3 5 pm. 

Iron phosphide anticorrosive pigments are recommended by manufacturers as replacement materials for zinc dust to reduce the price of zinc-rich paints [5.103]. For toxicological data, see Section 5.2.14. 

A trade name for iron phosphide is Ferrophos (Hooker Chemicals Plastics Corp., USA). 

H. A. Rowland,2 and M. N. Saha could find no evidence in the solar spectrum of the existence of phosphorus in the sun but phosphorus of extra-terrestrial origin has been found in meteorites. 0. C. Farrington reported the occurrence of free phosphorus in the meteorite which fell in Saline Township. Iron phosphide, and iron nickel phosphide have been found in numerous meteorites 3—vide infra, iron phosphide, and schreibersite, and rhabdite. 

The solubility of carbon in iron is reduced by the addition of phosphorus, but the temperature of formation of the eutectoid pearlite is not influenced by the presence of the phosphide. P. Goerens and W. Dobbelstein gave for the composition of the ternary eutectic E, Fig. 27, at 953°, l-96 per cent, of carbon, 6-89 per cent, of phosphorus, and 9145 per cent, of iron and J. E. Stead, respectively 1 92, 6 89, and 9149. In Fig. 26, A represents the iron-phosphorus eutectic, and B, the iron-carbon eutectic. They showed that when sat. solid soln. of iron phosphide in iron are heated or cooled they show no critical point at Ars, and the structure is not broken up even... 

E. Hussak, G. Florence, J. A. Antipoff, G. P. Merrill, W. Tassin, etc. H. E. Torne-bohm reported schreibersite in the terrestrial iron of Ovifak, although E. Cohen could not find it there G. vom Rath reported rhabdite in some pig-iron. A. Faye, E. Jannettaz, J. Gamier, and A. Daubree discussed the synthesis of these phosphides. E. Mallard identified the iron phosphide he obtained as the result of a coal-mine fire —vide supra—with rhabdite. G. Tschermak, J. L. Smith, E. Cohen, and E. Cohen and E. Weinschenk showed that dyslytite, schreibersite, and rhabdite are probably the same thing indeed, G. Tschermak found transition forms between acicular and foliated crystals—i.e. between schreibersite and rhabdite—in the meteorite of Braunau. 

Iron Phosphides.—Iron unites with phosphorus in several proportions. Nine supposed phosphides have been described, and four of them certainly exist 3 these are, Fe3P, Fe2P, FeP, and Fe2P3. 

Molecular beam methods are now widely used for the preparation of common semiconductors such as GaP and their intergrowth with other compounds. Thin films of iron phosphides of 0.5 to 25 J,m thickness can be electrodeposited from sulfate solutions. Depending on the deposition conditions (time, pH, temperature), the phosphides FeP, Fe2P, and/or FesP occur. The preparation of higher polyphosphides, for example, KP15, as thin films demonstrates the range of still yet unexplored preparative methods. This is also valid for the electrolysis of phosphates. The latter techniques is mostly suited for metal-rich phosphides. ... 

Other compounds can be prepared in the same way. For example, iron phosphide nanorods and nanowires form in a reaction mixture at 300 °C containing both TOP and TOPO. The nanorods of Fe2P display diameters of ca. 5nm and aspect ratios may be higher than 200. ... 

---