Tungsten ferro

Ferro-alloys Master alloys containing a significant amount of bon and a few elements more or less soluble in molten bon which improve properties of bon and steels. As additives they give bon and steel better characteristics (increased tensile sbength, wear resistance, corrosion resistance, etc.). For master alloy production carbothermic processes are used for large-scale ferro-sihcon, ferro-chromium, ferro-tungsten, ferro-manganese, ferro-nickel and metallothermic processes (mainly alumino and sihco-thermic) for ferro-titanium, ferro-vanadium, ferro-molybdenum, ferro-boron. 

The ferrocenyl ligand is able to tolerate both high and low oxidation states of the central metal, as may be seen from the series of half-sandwich tungsten-ferro-cenyl complexes CpW(CO)3-Fc [178, 184], CpW(NO)2-Fc [177], and CpWO -Fc [177] (Scheme 5-26). 

Ferro tungsten Tungsten metal powder Tungsten carbide powder Tungsten e scrap Other tungsten materials Total... 

Alloys.1—The most important alloy of molybdenum is ferro-molybdenum, which is used as an addition to steel. The effect of molybdenum on steel is similar to that of tungsten, but is more marked the tensile strength is increased and the elastic limit raised. For highspeed tool-steels molybdenum is often used in conjunction with tungsten. It has been found that the addition of molybdenum in small quantities (up to 15 per cent.) to steel increases the liability to corrosion, especially in acid and salt solutions. An important use of steels containing 3 to 4 per cent, of molybdenum and 1-0 to 1-5 per cent, of carbon is for the manufacture of permanent magnets. ... 

Figure 3.37. Coupled torsion-Knudsen effusion apparatus of Ferro el a). 16). A, electro-balance B. tungsten torsion wire C. reflecting, mirror D. braking disc E. torsion cell F. twin cell G. thermostatic sand bath.

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