Nickel structure

Philipp Lengsfeld and Norbert H. Nickel, Structural and Electronic Properties of Laser-Crystallized Poly-Si... 

The anode in the diagram is a porous nickel structure with the pores containing some molten carbonate. The cathode is porous nickel oxide also containing molten carbonate. 

Sintering is a thermal process through which a loose mass of particles is transformed to a coherent body. It usually takes place at a temperature equal to two-thirds the melting point, or ca 800—1000°C for nickel. The sintered nickel structure without active material is called a plaque and it can be prepared by either dry or wet processes (see Metallurgy, powder). 

It is attractive to assign the monomer as Ni(I) because (1) the monomer has a shorter Ni-N distance than the dimer, and (2) the UV-vis spectrum of the dimer in solution only appears after the one-electron reduction is complete. However, it is difficult to distinguish Ni(I) from Ni(0) species using the X-ray structures. There are some reported nickel structures containing bpy CpNi -... 

Thus the alloy 74.9% Co -(-21.7% Fewith the latticeAl is still active, and the alloys 50% Co + 50% Fe and 24.2% Co + 75.8% Fe with a lattice A2 are not. Copper seems to be an exception (see above). Rie-niicker and Unger (207) carried out a similar very accurate study applying X-ray analysis and adsorption measurements of the surfaee the results supported the requirements of the multiplet theory. Recently, Rieniicker (208) found that for the hydrogenation of propylene (which proceeds according to the model of Fig. 6) binary alloys of Ni and Fe of diffei ent composition are also active only until they have a nickel structure, i.e., Al, which is in conformity with the multiplet theory. 

T. Fritz, W. Mokwa, U. Schnakenberg, Material characterisation of electroplated nickel structures for microsystem technology, Electrochim. Acta 47 (2001) 55. 

While the regular occurrence of cages based on eubane units can be easily rationalized as related to the sodium chloride structure, it is considerably more difficult to rationalize the regular occurrence of trigonal prisms. An attempt has been made to relate the cobalt and nickel structures to the structure of the M(OH)2 hydroxide. ... 

LIGA, Fig. 2 Micronozzle fabiicatirai by LIGA at different stages (a) PMMA resist mold by X-iay lithography, (b) nickel structure after electrofOTming and removal of... 

STEREO-CHEMICAL FACTORS IN COORDINATION COMPOUNDS OF NICKEL STRUCTURE OF COMPLEX WITH TRIMETHYLENE DINITRAMINE. 

A2 STEREO-CHEMICAL FACTORS IN COORDINATION COMPOUNDS OF NICKEL STRUCTURE OF COMPLEX WITH TRIMETHYLENE DI-NITRAMINE, J.H. Robertson and D.M. Liebig... 

Zhang X, Tu KN, Xie YH, Tung CH (2006) High aspeet ratio nickel structures fabrieated by eleetroehemieal replication of hydrofluoric acid etched silieon. Eleetroehem Solid State Lett 9(9) C150-C152... 

The conventional production-type oxide cathode consists of a coating of barium and strontium oxides on a base metal such as nickel. Nickel alloys, in general, are stronger, tougher, and harder than most nonferrous alloys and many steels. The most important property of nickel alloys is their abihty to retain strength and toughness at elevated temperatures. The oxide layer is formed by first coating a nickel structure (a can or disc) with a mixture of barium and strontium carbonates, suspended in a binder material. The mixture is approximately 60% barium carbonate and 40% strontium carbonate. 

The skimmer is a chemically vapor deposited nickel structure sold by Beam Dynamics Inc. 708 East 56th St. Minneapolis, MN 55417. 

UGA-Uke Techniques, Rgure 2 Images of (a) silicon subsirate with ultra-thick photoresist (b) the patterned photoresist (c) electrofomied nickel structure and (d) released nickel structure... 

In the sintered-plate design, the active materials are held within the pores of a sintered-nickel structure. Nickel hydroxide with 3% to 10% cobalt hydroxide is the active material of the positive plate while cadmium hydroxide is the active material of the negative plate. 

Benini Stefano Wojciech. R. Rypniewski, Keith, S. Wilson, Silvia M. Stefano C. Stefano M. A new proposal for thiourease mechanism based on the crystal stmctures of the native and inhibited enzyme from Bacilus pasteurii why thiourea hydrolysis costs two nickels. Structure 7,205-216 (1999). 

The two aystals that exist at point A are (1) the nickel-rich face-centered cubic structure with 40 mol % Cr aud (2) the chromium-rich body-centered cubic structure with 5 mol % Ni. The 50% composition on the phase diagram has just slightly more Cr atoms thau can fit into the nickel structure. Thus most of the crystals in the two-phase region are the nickel-rich face-centered cubic structure with only a small amount of the chrominm-rich body-centered cubic structure, as determined by a method called the lever rule. The lever rule teUs us that in a two-phase region, whichever phase is closest to the composition of the alloy is the more abundant phase. In this example, the 50 mol % Cr composition on the phase diagram is closer to the 40 mol % Cr composition of the nickel-rich face-centered cubic phase than the 95 mol % Cr composition of the chromium-body-centered cubic phase, so more face-centered cubic crystals are present than body-centered cnbic crystals. 

One of the best known chelate compounds is nickel dimethylglyoxime. Its formation and isolation represent a widely used specific analytical method for nickel. Structural studies (6) have shown the presence of a metal-metal interaction in the crystal that has been estimated at 10 kcal/mole. This fact has been suggested as the basis for its water insolubility and, of course, indicates that it is polymeric [11], A study that varied the dioxime ligand and, hence, the metal-metal distance, was made to see if solubility were directly related to this feature (6). But the solubilities of the chelates that were prepared were found to be as dependent on the specific ligand as they were on the metal-metal distance. This was true in water and organic solvents. 

---