Materials Literature
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In order to clarify the dissolving aspects of refractory elements (Ta, Mo, V) which are components of beta titanium alloys, the experiments of VAR with a mold of 100 mm diameter were carried out. In the experiments, the initial diameters of those elements were changed and their particles were observed after melting. T…
The effect of δ ferrite morphology and grain boundary property on the low temperature toughness of austenitic stainless steel SUS304L weld metal has been studied. The types of δ ferrite were classified into three categories : vermicular, lacy, and globular. When Charpy test were performed at low temperature, brittle f…
The interaction of mer-IrCl3(SEt2)3 with Mg(mes)2(thf)2[mes = mesityl (2,4,6-trimethylphenyl), thf = tetrahydrofuran] in Et2O-thf gives trans-Ir(mes)2(SEt2)21. With PMe31 gives trans-Ir(mes)2(PMe3)22; both compounds are paramagnetic. With NO, 2 reacts to form the formally iridium(III) complex Ir(mes)2(NO)(PMe3)24 that…
The crystal structure of Cs 3 Sr[Ag 2 (SCN) 7 ] was determined from single crystal X-ray diffraction data (tetragonal, I [unk]2 m , a = 11.083(2) Å, c = 20.117(3) Å, Z = 4, D x = 2.98 Mgm −3 , μ (Mo K α ) = 8.55 mm −1 , T = 293 K, R = 0.040 for 1183 unique reflections). The main structural feature is the binuclear μ -…
Transition behaviour of impact absorbed energy is well known for 18%Mn-18%Cr-N steel. The cleavage-like transgranular facets are detected on fracture surface of impact specimens tested at low temperature. Impact absorbed energy decrease when these cleavage-like facets are found on fracture surface of test specimen.The…
Liquid or semisolid redox polymer electrolytes can be organized to show many characteristics of conventional solid‐state semiconductor diodes. Fermi levels of redox electrolyte solutions provide a rational comparison of redox electrolyte solution mixtures at equivalence, redox ions in fixed‐site polymers, correspondin…
The effect of chemical composition on the sintering mechanisms and microstructure of Fe-C-P alloys was studied by metallographic and thermal analysis and by secondary ion mass spectroscopy. Pore morphology was found to tend to spheroidisation with an increase in the phosphorus and, more particularly, in the carbon con…
Permanent magnets based on Fe–Nd–B show high magnetisation and high coercivity at room temperature but unfavourable properties at higher temperatures. This behaviour has to be improved. The hard magnetic properties are limited by nucleation of severed domains, therefore the surfaces and interfaces of the grains consti…
After a short introduction relating the evolution of ultraphosphate chemistry along time we report what is the present state of our knowledge of this chemistry, giving as completely as possible the main crystallographic features of all the today known ultraphosphates. Then we describe what are the atomic frameworks of…
Mossbauer spectroscopy has been widely used to determine oxidation states and site occupancies of 1991年10月4日
This paper presents a straightforward analytical and numerical method for the design of a specific type of varied line-space grating system. The mathematical development will assume plane or nearly plane spherical gratings that are illuminated by convergent light, which covers many interesting cases for synchrotron ra…
The difference in the effect of guanidinium chloride (GdnHCl) and urea on the unfolding of hen egg-white lysozyme was evaluated mostly by means of circular dichroism(CD) measurements at pH 6.2 and at room temperature. The CD spectrum of lysozyme in 6M GdnHCl revealed the unfolded state, but that in 8M urea was almost…
Abstract Maize and rice starches were independently polymerized with acrylic acid (AA) using potassium permanganate/citric acid initiation system. The dependence of total conversion (grafting and homopolymerization) on AA, potassium permanganate and citric acid concentrations, time and temperature of polymerization an…
Two different types of lysozyme, types I and II, that lysed the lyophilized cells of Micrococcus lysodeikticus were purified from the skin mucus of ayu Plecoglossus altivelis by sequential column chromatographies on SP-Toyopearl 650M, Heparin Sepharose CL-6B, Mono S HR 5/5, and Superose 12HR 10/30. The types I and II…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComputation of low-energy crystalline arrangements of cellulose triacetateRomain M. Wolf, Eric Francotte, Leslie Glasser, Istvan Simon, and Harold A. ScheragaCite this: Macromolecules 1992, 25, 2, 709–720Publication Date (Print):January 1, 1992Publication History Published o…
"‘Corrosion resistance of technical ceramics’." British Corrosion Journal, 27(1), p. 25
Abstract The thermal decomposition at volatilization temperatures of polybutadiene samples with different initial microstructures was investigated i. vac. and under nitrogen atmosphere by thermogravimetry, differential scanning calorimetry, thermal volatilization analysis and infrared spectroscopy. The decomposition o…
Abstract An aluminum and boron carbide cermet was evaluated for possible application as a neutron absorbing material where structural strength and rigidity will be required. The boron carbide/aluminum composite possessed unique continuous interconnected ceramic and metal phases. Traditional bocon containing neutron ab…
Zwei schwefelverbrückte, nahezu planare Ge 2 S 2 ‐Vierringe liegen im neuartigen Sesquichalcogenid 1 vor, das, sich bei der Umsetzung von t uGeCl 3 mit (NH 4 ) 2 S 5 bildet. 1 lagert bei thermischer Belastung in das bereits bekannte ( t BuGe) 4 S 6 ‐Isomer mit Adamantangerüst um. Wird dieses direkt aus t BuGeCl 3 und…
As the fundamental tools in the cold rolling, work rolls have been greatly affected on the quality, production cost and productivity. The issue of the technological innovation about work roll manufacturing have been changed from the original, which was concerned with steel making and ingotting techniques for minimizin…