Investigations Concerning the Laser Ignition of Energetic
... Energetic materials (EMs) not only found use in military applications but also in civil ones like airbags, explosives in mining, signal ammunition or fireworks, just to name a few. However, it was a long way from the incidental discovery of black powder (a mixture of 75 % potassium nitrate, 15 % cha ...
... Energetic materials (EMs) not only found use in military applications but also in civil ones like airbags, explosives in mining, signal ammunition or fireworks, just to name a few. However, it was a long way from the incidental discovery of black powder (a mixture of 75 % potassium nitrate, 15 % cha ...
Plasmonic Doped Semiconductor Nanocrystals: Properties
... spectral range, since even a minor change of the carrier density strongly affects the spectral position of the LSPR. Two classes of degenerate semiconductors are most relevant in this respect: impurity doped semiconductors, such as metal oxides, and vacancy doped semiconductors, such as copper chalc ...
... spectral range, since even a minor change of the carrier density strongly affects the spectral position of the LSPR. Two classes of degenerate semiconductors are most relevant in this respect: impurity doped semiconductors, such as metal oxides, and vacancy doped semiconductors, such as copper chalc ...
Chemistry of Chromium - Chemwiki
... Chromate, CrO42-, is a salt of chromic acid. This salt is associated with a yellow color in basic conditions, for example potassium chromate. Dichromate, Cr2O72-, is a salt of dichromic acid. This salt is associated with a strong orange color in acidic conditions, for example potassium dichromate. ...
... Chromate, CrO42-, is a salt of chromic acid. This salt is associated with a yellow color in basic conditions, for example potassium chromate. Dichromate, Cr2O72-, is a salt of dichromic acid. This salt is associated with a strong orange color in acidic conditions, for example potassium dichromate. ...
I Ceramic Material Classes - Wiley-VCH
... residual porosity (<0.1%). However, this goal is usually not attainable by normal sintering process, as the complete elimination of residual porosity requires long soaking times at high temperature, which is always accompanied by significant, and often abnormal, grain growth triggered by the presence ...
... residual porosity (<0.1%). However, this goal is usually not attainable by normal sintering process, as the complete elimination of residual porosity requires long soaking times at high temperature, which is always accompanied by significant, and often abnormal, grain growth triggered by the presence ...
catalysis - Lehigh University
... Raman and infrared spectroscopy provide complementary information about the nature of the surface metal oxide species present in supported metal oxide catalysts. This paper reviews the type of fundamental information that is typically obtained in Raman and IR characterization studies of supported me ...
... Raman and infrared spectroscopy provide complementary information about the nature of the surface metal oxide species present in supported metal oxide catalysts. This paper reviews the type of fundamental information that is typically obtained in Raman and IR characterization studies of supported me ...
On the design of advanced metal oxide nanomaterials Lionel
... physical, chemical, and structural properties. They include optical, optoelectronic, magnetic, electrical, thermal, electrochemical, photoelectrochemical, mechanical, and catalytic properties. Such diversity originates from the more complex crystal and electronic structures of metal oxides compared ...
... physical, chemical, and structural properties. They include optical, optoelectronic, magnetic, electrical, thermal, electrochemical, photoelectrochemical, mechanical, and catalytic properties. Such diversity originates from the more complex crystal and electronic structures of metal oxides compared ...
ORTHOMAGMATIC Fe–Ti–V OXIDE MINERALIZATION HOSTED IN
... divided into four modes of occurrence, based on field observations: 1) massive to semi-massive oxide pods, 2) disseminated oxide mineralization, 3) vein-like oxide mineralization, and 4) alternating bands of oxides and anorthosite. The oxide mineralogy is dominated by spinel series Fe–Ti oxide (magn ...
... divided into four modes of occurrence, based on field observations: 1) massive to semi-massive oxide pods, 2) disseminated oxide mineralization, 3) vein-like oxide mineralization, and 4) alternating bands of oxides and anorthosite. The oxide mineralogy is dominated by spinel series Fe–Ti oxide (magn ...
Microwave Synthesis of Cuprous Oxide Micro
... tures and morphologies of the particles were determined by scanning electron microscopy (SEM, Hitachi S-4300). The samples were coated with gold to improve the conductivity during SEM observation. The specific surface area of the particles was determined by an automated surface area and pore size an ...
... tures and morphologies of the particles were determined by scanning electron microscopy (SEM, Hitachi S-4300). The samples were coated with gold to improve the conductivity during SEM observation. The specific surface area of the particles was determined by an automated surface area and pore size an ...
cobalt(iii) complexes / cobalt(ii) cyanide 239
... Cobalt(II) iodide is used for analysing water in organic solvents; and as a color indicator to determine moisture and humidity. Physical Properties Exists in two isomorphous forms, α– and ß–forms; both modifications highly hygroscopic. The α–form is black hexagonal crystal; density 5.58 g/cm3; turns ...
... Cobalt(II) iodide is used for analysing water in organic solvents; and as a color indicator to determine moisture and humidity. Physical Properties Exists in two isomorphous forms, α– and ß–forms; both modifications highly hygroscopic. The α–form is black hexagonal crystal; density 5.58 g/cm3; turns ...
- Opus
... aesthetically attractive colored glass,4 e.g. cobalt-doped glass typically appears blue, absorbing red–orange light through the introduction of the transition metal-based color centers. Despite their architectural appeal, the practicalities of continuous modern float glass production designate the i ...
... aesthetically attractive colored glass,4 e.g. cobalt-doped glass typically appears blue, absorbing red–orange light through the introduction of the transition metal-based color centers. Despite their architectural appeal, the practicalities of continuous modern float glass production designate the i ...
Recent Advances in Phosphate Laser Glasses for High Power
... shot” devices with several minutes or even hours between shots, therefore the glass physical properties tend to be of less importance for the end use application. However the glass physical properties can be very important to the successful manufacture and handling of HPP glasses. In the case of HAP ...
... shot” devices with several minutes or even hours between shots, therefore the glass physical properties tend to be of less importance for the end use application. However the glass physical properties can be very important to the successful manufacture and handling of HPP glasses. In the case of HAP ...
Exploring the cylindrical photo-bending shape in
... theoretically given the distribution of the domains and the compliance tensors in the respective domains. Likewise, the effective eigen-strain for polydomain nematic glass could be computed theoretically given the distribution of the domains and the eigen-strain in the respective domains. However, w ...
... theoretically given the distribution of the domains and the compliance tensors in the respective domains. Likewise, the effective eigen-strain for polydomain nematic glass could be computed theoretically given the distribution of the domains and the eigen-strain in the respective domains. However, w ...
EFFECT OF CRYSTALLINITY ON THE IMPACT
... The bulk amorphous glass specimens of composition La55Al25Cu10Ni5Co5 were uniformly cylindrical with > 99% relative density. The XRD pattern as shown in Fig. 1 does not reveal any signi®cant peak for the as-quenched material, indicating that it is fully amorphous. The diraction patterns of specimen ...
... The bulk amorphous glass specimens of composition La55Al25Cu10Ni5Co5 were uniformly cylindrical with > 99% relative density. The XRD pattern as shown in Fig. 1 does not reveal any signi®cant peak for the as-quenched material, indicating that it is fully amorphous. The diraction patterns of specimen ...
CHROMIUM
... It has a density of 7.10gcm-3, melts at 1907 C, boils at 2671 C and is a body centred cubic solid at room temperature. Chromium is a steel-grey lustrous metal which can take a high polish. It is relatively hard but malleable and many of its applications are due to its excellent corrosion resista ...
... It has a density of 7.10gcm-3, melts at 1907 C, boils at 2671 C and is a body centred cubic solid at room temperature. Chromium is a steel-grey lustrous metal which can take a high polish. It is relatively hard but malleable and many of its applications are due to its excellent corrosion resista ...
Computational fluid dynamic modeling of tin oxide deposition in an
... transfer within the glass with a fixed temperature at the bottom of the glass. The heat transfer due to radiation is not accounted for in the current model and might be considered in future work. The temperature and concentration distributions are uniform at all inlets (distribution slots). The zero ...
... transfer within the glass with a fixed temperature at the bottom of the glass. The heat transfer due to radiation is not accounted for in the current model and might be considered in future work. The temperature and concentration distributions are uniform at all inlets (distribution slots). The zero ...
The colours of chromium
... Sir Humphrey Davy did not know much about chromium or its compounds when he wrote his famous text book Elements of Chemical Philosophy, but he did remark that chromic acid has a sour taste1. Tasting chemicals was obviously the order of the day, because in that very same year Jöns Jacob Berzelius wro ...
... Sir Humphrey Davy did not know much about chromium or its compounds when he wrote his famous text book Elements of Chemical Philosophy, but he did remark that chromic acid has a sour taste1. Tasting chemicals was obviously the order of the day, because in that very same year Jöns Jacob Berzelius wro ...
Characterization of various zinc oxide catalysts
... and ZC*) exhibited a higher conversion at all reaction temperatures, reaching near complete conversion at 400 °C compared with the zinc oxide catalyst (Z*). The converted products mainly consisted of isobutene, as the dehydrated product, and isobutyraldehyde, as the dehydrogenated product. The yield ...
... and ZC*) exhibited a higher conversion at all reaction temperatures, reaching near complete conversion at 400 °C compared with the zinc oxide catalyst (Z*). The converted products mainly consisted of isobutene, as the dehydrated product, and isobutyraldehyde, as the dehydrogenated product. The yield ...
Stud bump bonding
... These intermetallics have different properties than the individual metals which can cause problems in wire bonding in microelectronics. The main compounds formed are Au5Al2 (white plague) and AuAl2 (purple plague), which both form at high temperatures. Long exposure of of a circuit to > 100 °C is su ...
... These intermetallics have different properties than the individual metals which can cause problems in wire bonding in microelectronics. The main compounds formed are Au5Al2 (white plague) and AuAl2 (purple plague), which both form at high temperatures. Long exposure of of a circuit to > 100 °C is su ...
Corrosion Chemistry Definition:-The Process of destruction or
... Corrosion Inhibitors: A corrosion inhibitor is a substance, which when added in small quantities to the aqueous corrosive environment effectively decrease the corrosion of a metal. They are two types (1) Anodic Inhibitors:-These are oxygen carriers or oxidizing agents. They combine with anodic metal ...
... Corrosion Inhibitors: A corrosion inhibitor is a substance, which when added in small quantities to the aqueous corrosive environment effectively decrease the corrosion of a metal. They are two types (1) Anodic Inhibitors:-These are oxygen carriers or oxidizing agents. They combine with anodic metal ...
MaterialEASE: Amorphous Materials: A Tutorial on Noncrystalline
... atomic rearrangement. Over the course of the middle decades of the 20th century, as more metallic glasses were prepared, it became evident that all solids have the potential to be prepared as glasses. As mentioned earlier, the challenge to preparing metallic glass is to cool it at a sufficiently rap ...
... atomic rearrangement. Over the course of the middle decades of the 20th century, as more metallic glasses were prepared, it became evident that all solids have the potential to be prepared as glasses. As mentioned earlier, the challenge to preparing metallic glass is to cool it at a sufficiently rap ...
Interfacial Reaction between Alumina and Cu
... According to Pask (Ref. 4), two basic requirements must be satisfied to obtain a strong joint in ceramic/metal and glass/metal systems. The first requirement is the formation of an intimate interface where atomic contact exists as a result of van der Waals attractive forces (physical bond) or a cont ...
... According to Pask (Ref. 4), two basic requirements must be satisfied to obtain a strong joint in ceramic/metal and glass/metal systems. The first requirement is the formation of an intimate interface where atomic contact exists as a result of van der Waals attractive forces (physical bond) or a cont ...
Oxide Thermoelectric Materials for Heat-to
... the carrier mobility. ZnO-based thermoelectric materials can be one of the examples of this strategy 36-40)。 Zinc oxide is a wide band gap semiconductor with a direct band gap of 3.2 – 3.5 eV. Zinc has relatively large electronegativity as a metal, resulting in the less polarized Zn–O bond compared ...
... the carrier mobility. ZnO-based thermoelectric materials can be one of the examples of this strategy 36-40)。 Zinc oxide is a wide band gap semiconductor with a direct band gap of 3.2 – 3.5 eV. Zinc has relatively large electronegativity as a metal, resulting in the less polarized Zn–O bond compared ...
Metal complexes of pyrroline-N-oxide dioxime A. B. B
... makes these complexes promising as linking units between metal ions and opens the possibility for building coordination polymers. Finally, the presence of “residual” protons makes these complexes potentially liable to oxidation and the formation of corresponding paramagnetic vynilnitroxidecontaining ...
... makes these complexes promising as linking units between metal ions and opens the possibility for building coordination polymers. Finally, the presence of “residual” protons makes these complexes potentially liable to oxidation and the formation of corresponding paramagnetic vynilnitroxidecontaining ...
Methods of Strengthening Ceramics
... alumina cores with aluminous porcelain veneers have been used in combination. These laminates are much stronger than regular porcelain, similar to metal ceramic systems. The bonding at the interface is chemical in nature and an ionic bond ensures no porosity as the wetting of the porcelain enamel on ...
... alumina cores with aluminous porcelain veneers have been used in combination. These laminates are much stronger than regular porcelain, similar to metal ceramic systems. The bonding at the interface is chemical in nature and an ionic bond ensures no porosity as the wetting of the porcelain enamel on ...
Properties of alkaline-resistant calcium-iron
... 1.2.1. Glass Forming and Fiber Pulling Ability The addition of certain metal oxides which are not glass forming oxides can hinder glass formation while other oxides have a minimal effect [12]. Yu et al. found that increasing Fe2O3 and soda content in phosphate glasses could increase melting temperat ...
... 1.2.1. Glass Forming and Fiber Pulling Ability The addition of certain metal oxides which are not glass forming oxides can hinder glass formation while other oxides have a minimal effect [12]. Yu et al. found that increasing Fe2O3 and soda content in phosphate glasses could increase melting temperat ...
Glass-to-metal seal
Glass-to-metal seals are a very important element of the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass encapsulated semiconductor diodes, reed switches, pressure tight glass windows in metal cases, and metal or ceramic packages of electronic components.Properly done, such a seal is hermetic. To achieve such a seal, two properties must hold: The molten glass must be capable of wetting the metal, in order to form a tight bond, and The thermal expansion of the glass and metal must be closely matched so that the seal remains solid as the assembly cools.When one material goes through a hole in the other, such as a metal wire through a glass bulb, and the inner material's coefficient of thermal expansion is higher than that of the outer, it will shrink more as it cools, cracking the seal. If the inner material's coefficient of expansion is slightly less, the seal will tighten as it cools, which is often beneficial. Since most metals expand much more with heat than most glasses, this is not easy to arrange.