874. High-temperature studies of the system calcium oxide–phosphorus pentoxide
J. H. Welch and W. Gutt, J. Chem. Soc., 1961, 4442 DOI: 10.1039/JR9610004442
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
ESTERIFICATION OF THE SURFACE OF AMORPHOUS SILICA
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTESTERIFICATION OF THE SURFACE OF AMORPHOUS SILICAC. C. Ballard, E. C. Broge, R. K. Iler, D. S. St. John, and J. R. McWhorterCite this: J. Phys. Chem. 1961, 65, 1, 20–25Publication Date (Print):January 1, 1961Publication History Published online1 May 2002Published inissue 1 J…
Devitrification of Natural Glass
Many aspects of the history of natural glasses are related to the physicochemical properties of silicate melts. Glasses are thermodynamically unstable; with time and under a variety of conditions, they become crystalline. When little water is present, devitrification may be described in much the same terms as those wh…
Chemical reactivity of polyethylene terephthalate. Hydrolysis and esterification reactions in the solid phase
D. A. S. Ravens and I. M. Ward, Trans. Faraday Soc., 1961, 57, 150 DOI: 10.1039/TF9615700150
Passivity and Corrosion Resistance of Titanium and Its Alloys
A brief review is given of possible ways to increase corrosion resistance of titanium in acids proceeding from analysis of its electrochemical characteristics and passive state stability. Rational ways of alloying titanium for acid resistance are indicated. Experiments include titanium alloys with palladium, chromium,…
Soviet Electrochemistry
Abstract not Available.
Note on a Phase Transition in VO2.
The powder diffractogram of vanadium dioxide crystals was found to change, rapidly and reversibly, at about 70 deg C, the most obvious feature being the disappearance of all reflections hkl with h odd. At 180 deg C the effect was even greater and the crystal structure was derived and found to be essentially of the rut…
630. The preparation and properties of some tetrakis(methylcyanide)copper(I) complexes
B. J. Hathaway, D. G. Holah and J. D. Postlethwaite, J. Chem. Soc., 1961, 3215 DOI: 10.1039/JR9610003215
THE FORMATION OF FIBRILS FROM COLLAGEN SOLUTIONS
The kinetics of collagen reprecipitation from solutions of salt-extracted calf dermis in the presence of small amounts of mucopolysaccharide and nucleic acids (0.005 per cent in the final reaction mixture) has been reported by Wood (1960). The present paper is a parallel study using the same materials, and describes t…
Cation Diffusion in Cr[sub 2]O[sub 3]
On employing a sectioning technique with Cr 51 as the tracer, the diffusion of Cr ions in nitrogen‐equilibrated was determined from 1045° to 1550°C. Volume diffusion coefficients in hot‐pressed compacts of three different impurity levels conform to the expression . Additions of and do not cause a significant change. U…
Elastic Constants of Single Crystals of the bcc Transition Elements V, Nb, and Ta
Values of the elastic constants of single crystals of the bcc transition elements V, Nb, and Ta, are reported at T=27°C. They are, in units of 1011 d/cm2: c11c12c44V22.811.94.26Nb24.613.42.87Ta26.716.18.25Comparisons are made of the values obtained for two crystals each of V and Ta. A high-frequency cw resonance techn…
Crystal Distortion in Copper Ferrite-Chromite Series
The cation distributions in copper ferrite-chromite series and the copper ferrite quenched from high temperatures are measured by X-ray diffraction method. The lattice parameters are also measured as a function of chromium ion content and of temperature. The critical fractions of copper ions on 16d and 8a sites for th…
On the determination of the crystalline fraction of isotactic polypropylene from x‐ray diffraction
Abstract A simple procedure for the determination of the crystalline fraction in isotactic polypropylene, suitable for routine work, is described. It gives lower figures for the crystalline fraction than the method recommended by N ATTA , C ORRADINI , and C ESARI in 1957. The correctness of the results (within the lim…
Preparative methods of polymer chemistry
Polymerization and the Characterization of Polymers.Preparation, Fabrication, and Characterization of Polymers.Advanced Processing.Polyamides, Ureas, Urethanes, and Other Amide--Linked Polymers.Polyesters, Polycarbonates, and Polyurethanes.High Temperature and High Performance Polymers.Solid Phase Polymerization.Ring-…
Lattice and Grain Boundary Diffusion in Polycrystals
Tracer diffusion mechanism in a polycrystalline medium with a plane source is discussed by assuming both the high diffusivity along the grain boundaries as compared with that inside the grains and the conservation of diffusant. The following theoretical results are obtained from the analytical solution of the problem.…
Transport Phenomena
Abstract not Available.
Subsolidus Phase Relations in the System CaCO3-MgCO3
The solid solubility, disorder, and decomposition relationships in the system CaCO3-MgCO3 were investigated in the pressure range of from 10 to 10,000 bars and at temperatures of from 700° to 1,200° C. A sealed-tube technique was used for the most part in an internally heated pressure vessel designed for rapid operati…
Metallic Corrosion Inhibitors
Abstract not Available.
Magnetic Properties of Fine Particles
Single domain ferromagnetic particles have a large coercive force. This character disappears at elevated temperature and the particles behave as if they are paramagnetic even at the temperature below the Curie point. The recent development in this field is reviewed.
The thermodynamics of frost damage to porous solids
D. H. Everett, Trans. Faraday Soc., 1961, 57, 1541 DOI: 10.1039/TF9615701541