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In alloys

CoAsS, are also used as sources. The ore is roasted and Co is precipitated as the hydroxide and then reduced to Co with carbon (hep below 417 - C, cep to m.p.). The metal is silvery white and readily polished. It dissolves in dilute acids and is slowly oxidized in air. Adsorbs hydrogen strongly. The main use of cobalt is in alloys. Cobalt compounds are used in paints and varnishes, catalysts. Cobalt is an essential element in the diet. World production 1976 32 000 tonnes metal. [Pg.104]

C (Mond process). The silver-white metal is ccp. The metal is not tarnished by air but is attacked by acids (except cone. HNO3). It is resistant to Fj. It is used extensively in alloys, particularly in steels and cast iron and as a coinage metal. Used in glass (green) in catalysts (particularly for hydrogenation). Western world production 1981 662 000 tonnes. [Pg.273]

Nearly all experimental eoexistenee eurves, whether from liquid-gas equilibrium, liquid mixtures, order-disorder in alloys, or in ferromagnetie materials, are far from parabolie, and more nearly eubie, even far below the eritieal temperature. This was known for fluid systems, at least to some experimentalists, more than one hundred years ago. Versehaflfelt (1900), from a eareflil analysis of data (pressure-volume and densities) on isopentane, eoneluded that the best fit was with p = 0.34 and 8 = 4.26, far from the elassieal values. Van Laar apparently rejeeted this eonelusion, believing that, at least very elose to the eritieal temperature, the eoexistenee eurve must beeome parabolie. Even earlier, van der Waals, who had derived a elassieal theory of eapillarity with a surfaee-tension exponent of 3/2, found (1893)... [Pg.640]

The metal looks like iron it exists in four allotropic modifications, stable over various temperature ranges. Although not easily attacked by air. it is slowly attacked by water and dissolves readily in dilute acids to give manganese(II) salts. The stable form of the metal at ordinary temperatures is hard and brittle—hence man ganese is only of value in alloys, for example in steels (ferroalloys) and with aluminium, copper and nickel. [Pg.384]

Cobalt is a bluish silvery metal, exhibits ferromagnetism, and can exist in more than one crystal form it is used in alloys for special purposes. Chemically it is somewhat similar to iron when heated in air it gives the oxides C03O4 and CoO, but it is less readily attacked by dilute acids. With halogens, the cobalt(II) halides are formed, except that with fluorine the (III) fluoride, C0F3, is obtained. [Pg.401]

Nickel is a moderately lustrous, silvery metal, and is extensively used in alloys (for example coinage, stainless steel) and for plating where a durable resistant surface is required. It is also used as an industrial catalyst, for example in the hydrogenation of unsaturated organic compounds. It is attacked by dilute aqueous acids but not by alkalis it combines readily with many non-metals on heating. [Pg.406]

Gobalt is also used in other magnetic steels and stainless steels, and in alloys used in jet turbines... [Pg.83]

H. H. Anderson, "lon-Bombardment-Induced Composition Changes in Alloys and Compounds," in J. S. WiUiams and. M. Poate, eds.. Ion Implantation and Beam Processing, Academic Press, Inc., New York, 1984, Chapt. 6. [Pg.403]

Fresh reducing gas is generated by reforming natural gas with steam. The natural gas is heated in a recuperator, desulfurized to less than 1 ppm sulfur, mixed with superheated steam, further preheated to 620°C in another recuperator, then reformed in alloy tubes filled with nickel-based catalyst at a temperature of 830°C. The reformed gas is quenched to remove water vapor, mixed with clean recycled top gas from the shaft furnace, reheated to 925°C in an indirect fired heater, and injected into the shaft furnace. For high (above 92%) metallization a CO2 removal unit is added in the top gas recycle line in order to upgrade the quaUty of the recycled top gas and reducing gas. [Pg.429]

Nickel—Iron. A large amount of nickel is used in alloy and stainless steels and in cast irons. Nickel is added to ferritic alloy steels to increase the hardenabihty and to modify ferrite and cementite properties and morphologies, and thus to improve the strength, toughness, and ductihty of the steel. In austenitic stainless steels, the nickel content is 7—35 wt %. Its primary roles are to stabilize the ductile austenite stmcture and to provide, in conjunction with chromium, good corrosion resistance. Nickel is added to cast irons to improve strength and toughness. [Pg.6]

Fig. 8. Transmission election iniciogiaph showing the M22(Fe, AIn)2Si and Mg(Fe, Ain) dispeisoid paiticles in alloy 3004 sheet. Fig. 8. Transmission election iniciogiaph showing the M22(Fe, AIn)2Si and Mg(Fe, Ain) dispeisoid paiticles in alloy 3004 sheet.
X-Ray Emission and Fluorescence. X-ray analysis by direct emission foUowing electron excitation is of Hmited usefulness because of inconveniences in making the sample the anode of an x-ray tube. An important exception is the x-ray microphobe (275), in which an electron beam focused to - 1 fim diameter excites characteristic x-rays from a small sample area. Surface corrosion, grain boundaries, and inclusions in alloys can be studied with detectabiHty Hmits of -- 10 g (see Surface and interface analysis). [Pg.320]


See other pages where In alloys is mentioned: [Pg.38]    [Pg.42]    [Pg.58]    [Pg.60]    [Pg.74]    [Pg.88]    [Pg.104]    [Pg.128]    [Pg.198]    [Pg.236]    [Pg.245]    [Pg.249]    [Pg.290]    [Pg.295]    [Pg.386]    [Pg.398]    [Pg.432]    [Pg.270]    [Pg.661]    [Pg.661]    [Pg.925]    [Pg.408]    [Pg.32]    [Pg.29]    [Pg.156]    [Pg.383]    [Pg.56]    [Pg.324]    [Pg.330]    [Pg.367]    [Pg.494]    [Pg.138]    [Pg.237]    [Pg.240]    [Pg.164]    [Pg.127]    [Pg.86]    [Pg.246]    [Pg.390]   
See also in sourсe #XX -- [ Pg.881 ]




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Alloying elements in steel

Alloys Formed in Situ from Convertible Oxides

Analysis of the Effective Interatomic Interactions in Metallic Alloys

Applications of Recycled Polyethylene Terephthalate in Alloys, Blends and Compounds

Bonding in alloys

Bowing in quaternary alloys

Catalysis metals and alloys in liquid ammonia

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Clustering in alloys

Copper in alloys

Corrosion of iron alloys in supercritical

Corrosion of iron alloys in supercritical water

Corrosion of magnesium (Mg) alloys in engine coolants

Cracking of Sensitized Austenitic Alloys in Polythionic Acids

Development of Microstructure in Eutectic Alloys

Diffusion in alloys

Disorder in alloys

Electrodeposition of aluminum (Al) on magnesium alloys in ionic liquids

Electromigration in alloys

Electron Energy Loss Spectroscopy as a Tool to Probe the Electronic Structure in Intermetallic Alloys

Environmentally Enhanced Fatigue Crack Growth in Titanium Alloys

Experiment 5 Gravimetric Determination of Nickel in a Nichrome Alloy

Experimental procedure for the determination of phosphorus in aluminium alloys

Formation of intermediate phases in alloy systems

Hardening mechanism in lead-calcium alloys

Hydrogen as a Useful Alloying Element in Titanium Alloys

Hydrogen in disordered alloys

In Metal and Its Alloys

In iron alloys

Intergranular corrosion in aluminum alloys

Kinetic Processes in Metals and Alloys

Lead in Alloys

MAGNETISM IN METALS AND ALLOYS

Magnesium (Mg) alloys in commercial coolants

Magnesium (Mg) alloys in ethylene glycol solution

Magnesium alloys in commercial

Magnesium alloys in ethylene glycol

Magnesium alloys in ethylene glycol solution

Martensitic transitions in alloys

Measurement of Alloy Content in GaN and Related Materials

Mechanism of Intergranular Corrosion in 2XXX Alloys

Melting point trend in the binary alkaline earth metal alloys

Metals and alloys in nuclear power reactors

Metals, in alloys

Mutual solid solubility of the component metals in alloy systems

Nickel alloy in formic acid

Nickel alloys in seawater

Nickel in alloys

Order-Disorder Transitions in Alloys

Order-disorder, in alloys

Ordering Kinetics in Alloys by Residual Resistometry

Ordering in metal alloys

Performance of an Alloy in a Given Medium

Phase Separation in Iron-based Ternary Alloys

Phase in alloy

Phase transformations in alloys

Problems in the relations between complex intermetallic alloys and clusters

Rare earths in alloys

Rate processes in metals and alloys

Segregation in alloys

Short-Range Order in Metal Alloys

Site Selectivity of Hydrogen in Metals and Alloys

Solute redistribution in alloys

Specific Structural Phenomena in Electrodeposition of Alloys

Stacking Fault Energies in Al-Based Alloys

Stress corrosion cracking in alloys

Structural Stability in Fe-Based Alloys

Surface segregation, in alloys

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The Density of States in an Alloy

The Microstructure and Martensitic Transformation in a (Potentially) Shape-Memory Ni-AI-Ti-B Alloy

The Solubility of Gases in Alloys

The determination of boron in aluminium-magnesium alloys

The determination of nitrogen in titanium and its alloys

The determination of nitrogen in zirconium and its alloys

The determination of oxygen in aluminium alloys

The determination of oxygen in copper alloys

The determination of oxygen in lead alloys

The determination of oxygen in lead and its alloys

The determination of oxygen in zirconium, titanium and their alloys

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Titanium alloys in stress-corrosion cracking

Understanding Alloys in Terms of Electron Theory

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