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Embrittlement of laboratory and reactor aged CF3,CF8, and CF8M duplex stainless steels

Cast duplex stainless steels of CF3, CF8, and CF8M grades, containing a wide range of chemical composition and ferrite content, were aged in the laboratory at 270–450°C to evaluate the kinetics and mechanisms of thermal aging embrittlement. Also, CF8 and CF8A steels were obtained from components of boiling and pressur…

Active MgH2Mg Systems for Reversible Chemical Energy Storage

Abstract An overview of the importance of and methods available for heat storage in the form of sensible and latent heat is followed by a discussion of the advantages and disadvantages of reversible thermochemical energy storage compared to conventional energy sources such as fuels, i.e. irreversible chemical energy c…

Crystallochemical classifications of phyllosilicates based on the unified system of projection of chemical composition: II. The chlorite group

Abstract The classification and nomenclature of chlorites have been critically reviewed. A new classification based on the unified projection system of chemical composition has been proposed in which for the first time all trioctahedral, di-trioctahedral and dioctahedral species are included. The chemical composition…

Degradation of Aluminum Nitride Powder in an Aqueous Environmet

The degradation of A1N powder in excess H 2 O at room temperature for up to 24 h was investigated. Samples were characterized by various techniques (IR; XRD; SEM; XPS; C, H, N analysis; surface area, particle size, and weight change measurements). The reaction rate was found to be significant, with 80% of the A1N bein…

Determination of peak positions and areas from wide‐scan XPS spectra

Abstract It has been found that by taking transforms of both Gaussian and Lorentzian line shapes into polynomial representations, it is possible in many instances to determine peak position, peak intensity and the full‐width at half‐maximum (FWHM) from wide‐scan XPS spectra that have a low number of data points per el…

Structural changes associated with the spin transition in bis(isothiocyanato)bis(1,10-phenanthroline)iron: a single-crystal x-ray investigation

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural changes associated with the spin transition in bis(isothiocyanato)bis(1,10-phenanthroline)iron: a single-crystal x-ray investigationBernard Gallois, Jose Antonio Real, Christian Hauw, and Jacqueline ZarembowitchCite this: Inorg. Chem. 1990, 29, 6, 1152–1158Publica…

Fracture Mechanisms in Ferroelectric‐Ferroelastic Lead Zirconate Titanate (Zr: Ti=0.54:0.46) Ceramics

Fracture toughness, K IC , of a single‐phase commercial lead zirconate titanate (PZT) ceramic (Zr/Ti=0.54/0.46) of tetragonal structure ( c/a =1.019) was measured using the single edge notched beam method above and below the Curie temperature. Domain switching (poling) under electrical and mechanical loading was exami…

Comparative Study of Survival of Autologous Adipose Tissue Taken and Transplanted by Different Techniques

In recent years, adipocytes obtained by suction-assisted lipectomy have been used for implantation by injection methods. This study is designed to assess the appearance of suctioned and excised adipose tissue and its survival after being injected or implanted into different tissues (0.5 cc into the rectus muscle and 0…

Partial Discharge Detection in High Voltage Equipment

Electrical discharges that do not completely bridge the electrodes are called partial discharges. Although small, these discharges have been known for more than fifty years to cause progressive deterioration. Since 1945 the use of new high voltage dielectrics has required the use of sophisticated detection techniques.…

Polymorphism in melt crystallized syndiotactic polystyrene samples

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymorphism in melt crystallized syndiotactic polystyrene samplesGaetano Guerra, Vincenzo M. Vitagliano, Claudio De Rosa, Vittorio Petraccone, and Paolo CorradiniCite this: Macromolecules 1990, 23, 5, 1539–1544Publication Date (Print):March 1, 1990Publication History Publis…

Synthesis and characterization of di-disubstituted phthalocyanines

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of di-disubstituted phthalocyaninesJoseph G. Young and William OnyebuaguCite this: J. Org. Chem. 1990, 55, 7, 2155–2159Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 March 1990https://pub…

X-ray photoelectron spectroscopy studies of solvated metal atom dispersed catalysts. Monometallic iron and bimetallic iron-cobalt particles on alumina

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectroscopy studies of solvated metal atom dispersed catalysts. Monometallic iron and bimetallic iron-cobalt particles on aluminaBeng Jit Tan, Kenneth J. Klabunde, and Peter M. A. SherwoodCite this: Chem. Mater. 1990, 2, 2, 186–191Publication Date (Print…

Synthesis of self-doped conducting polyaniline

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of self-doped conducting polyanilineJiang Yue and Arthur J. EpsteinCite this: J. Am. Chem. Soc. 1990, 112, 7, 2800–2801Publication Date (Print):March 1, 1990Publication History Published online1 May 2002Published inissue 1 March 1990https://pubs.acs.org/doi/10.1021…

Nonaqueous Electrochemistry of Magnesium: Applications to Energy Storage

Research leading to the construction of an ambient temperature rechargeable magnesium battery based on organic electrolytes and positive electrodes capable of reversible intercalation of Mg +2 ions is discussed. The number of combinations of solvent, solute, and intercalation cathode which give reasonable battery perf…

Enantioselective epoxidation of unfunctionalized olefins catalyzed by salen manganese complexes

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEnantioselective epoxidation of unfunctionalized olefins catalyzed by salen manganese complexesWei Zhang, Jennifer L. Loebach, Scott R. Wilson, and Eric N. JacobsenCite this: J. Am. Chem. Soc. 1990, 112, 7, 2801–2803Publication Date (Print):March 1, 1990Publication History P…

Electroceramics: Characterization by Impedance Spectroscopy

Abstract Electroceramics are advanced materials whose properties and applications depend on the close control of structure, composition, ceramic texture, dopants and dopant (or defect) distribution. Impedance spectroscopy is a powerful technique for unravelling the complexities of such materials, which functions by ut…

BYPASS: an effective method for the refinement of crystal structures containing disordered solvent regions

A method is described for the least-squares refinement of the atomic parameters of the ordered part of a crystal structure in the presence of disordered solvent areas. Potential solvent regions are identified automatically. The contribution of the observed contents to the total structure factor is calculated via a dis…

Total electron scattering cross sections for molecular oxygen at low electron energies

Absolute total electron scattering cross sections for molecular oxygen have been measured at low electron energies using a photoelectron source. The measurements have been carried out at 38 electron energies varying from 0.15-10 eV with an accuracy of +or-2.7%. The cross sections obtained in the present experiment hav…

Spectroscopy of amorphous substances with molecular structure

Spectroscopy of organic molecular glasses and cold-deposited films is reviewed. The emphasis is on demonstration of the capabilities of such Spectroscopy in tackling the fundamental problems in the physics of the amorphous state. It is shown that in discussing the structural properties a considerable amount of informa…