Search results

Effect of Heat Treatment on the Structure of Ni-P Electrocoatings B.
Introduction A lot of research into the Ni-P alloys concern both their structure in the initial state and its changes during heat treatment [1-9].
As the materials in the metastable state, the amorphous alloys tend to transform its initial structure, which is most clearly visible in higher temperatures.
Transformations proceeding in the structure of the Ni-P coating heated at 400°C are connected with the transformations of metastable nickel phosphides into stable phosphides.
Gopalakrishnan: New Directions in Solid State Chemistry, second ed., Cambridge University Press, Cambridge, 1997

Synthesis and Crystal Structure of [Zn(C14H12N2)(HCO2)2]·2H2O Shengliang Nia, Yue Mengb and Peisong Tangc Department of Chemistry, Huzhou Teachers College, Huzhou, 313000, P.
The structures were solved by using direct methods.
Inorganic Chemistry Communications, 11, 10(2008), pp. 1231-1235
Sheldrick: SHELXS-97, Program for X-ray crystal structure solution.
Sheldrick: SHELXS-97, Program for X-ray crystal structure refinement.

Research on the Pore Structure of Alkali-Slag Cement Stone Activated with Water Glass Juan Hea, Changhui Yangb College of Materials Science and Engineering, Chongqing University, Chongqing 400045,China ahjxjd@yahoo.com.cn, bychh@cqu.edu.cn Key Words: Water Glass; Alkali–Slag Cement Stone; Pore Structure; Pore Surface Fractal Dimension Abstract.
The results show that the pore structure of alkali-slag cement stone posesses obvious fractal characters and that fits the Frenkel-Halsey-Hill(FHH) model quite well.So the pore surface fractal dimension can be used to synthetically evaluate the superior or inferior of the pore structure of cement stone.
Therefore, pore surface fractal dimension D could be used to express the complicated pore structure of hardened cement paste.
Pore surface fractal dimension could be used to make a comprehensive assessment to the pore structure of hardened cement paste.
Pore surface fractal dimension provides a new conception and method to describe the pore structure of hardened cement paste.

Overall, the sintering process can make the electrode structure compact and solid, and it is an essential process.
To study the structure of AgCl at different temperatures, AgCl powder was sintered to 420 ℃ and 450 ℃ respectively.
The structure is similar to AgCl powder sintered to 450 ℃.
In the second heating stage, because of further spread of the powders, the structure appears more compact.
（In Chinese） [5]Zhen Pang. solid chemistry: chemistry industry Press,2008,9,45-47.

The structures and optical performances were investigated in this paper.
Computers and Applied Chemistry, 2012, 29(8): 913-917(In Chinese) [5] X.H.
Science in China Series B: Chemistry, 2008, 51(2): 179-185 [12] G.W.
Science in China Series B: Chemistry, 2005, 48 (3): 210-215 [13] D.S.
Journal of Photochemistry and Photobiology A: Chemistry, 2003, 155 (1-3) :171-178 [19] K.N.

The molecular structure of [Eu0.3Tb0.7L1] was determined by X-ray crystallography.
The design of complexes of lanthanide ions with encapsulating ligands is an important theme in the field of supramolecular chemistry [9,10].
We have now explored further the chemistry of this family of the complexes.
The X-ray crystal structure and optical properties of the complex are also reported.
Molecular structure of [Eu0.30Tb0.70L1].

Fabrication of 3D TE Structures M.S.
We have previously developed a methodology for fabricating nanostructured TE materials via a solution chemistry route [7].
Fabricated 3D structures were used as templates to precipitate inorganic particles inside the interconnecting channels to form macroporous structures.
Fig. 3a presents SEM images of the PS opal structures obtained.
TEM micrograph of a ground replicated TE structure. 20 nm

Extraordinary stability of structural and electronic properties of tin oxide nanoparticles formed by soft chemistry M.
Timoshenko4 1Chemistry Department, Moscow State University, 119991 Moscow Russia 2Faculty of Material Science, Moscow State University, 119991 Moscow Russia 3Institute of General and Inorganic Chemistry, 119991 Moscow Russia 4Physics Department, Moscow State University, 119991 Moscow Russia aroum@inorg.chem.msu.ru Keywords: Tin dioxide, high surface area, photoluminescence, oxygen chemisorption Abstract.
Structure and optical properties of the samples were investigated by using X-ray diffraction, transmission electron microscopy, thermoprogrammable hydrogen reduction, low temperature nitrogen adsorption method, photoluminescence, infra-red absorption, Raman spectroscopy, and X-ray photoelectron spectroscopy.
On the base of results obtained for SnO2 nanoribbons by time-resolved X-ray excited optical luminescence (XEOL) and X-ray absorption near edge structures (XANES) Zhou et al. [12] brought out two bands centered at 2.10 and 2.51 eV, which were assigned to the radiative decay of trapped electrons in oxygen vacancies just below the conduction band to intrinsic surface states in the band gap.
The extremely high concentration of chemisorbed oxygen results in full electron depletion of SnO2 grains, low electron conductivity and flat band structure.

This is probably due to the formation of nano-graphite and other structures.
Less common fibrous structure and cloud formations.
The influence of process parameters on structure of carbon formed by adding metals.
Oil refining and oil chemistry, №3, 2007
Oil refining and oil chemistry, №5, 2005

Schematic 3D crystal structure has been shown in the insert.
The structures were confirmed as layered perovskite-type.
Our results show the space group is Pmmm and the structure is layered perovskite-type.
Giorgi , Surface and redox chemistry of Sm 0.95 Ce 0.05 Fe 1− x Ni x O 3− δ perovskites, Solid State Ionics , 194 (2011) 33–40
Junk, The chemistry of rare earth metals, compounds and corrosion inhibitors, In: Forsyth, Maria, and Hinton, Bruce, (eds.)