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  • Surfactants are a class of compounds that reduce the surface tension of a liquid. They can be adsorbed on gas-liquid or liquid-liquid interfaces, thus changing the properties of the interface and affecting its stability, wettability, viscosity, surface potential, etc. The most important applications of ZrB2 are in the high-temperature fields where it is used as a refractory material; hence, the effect of alumina on the oxidation rate of ZrB2 ceramic should be essentially investigated Invar 36® is an iron-based alloy with 36 % nickel. A special feature of this material is its low coefficient of thermal expansion below its Curie temperature of 280°C. The high-temperature oxidation of tantalum carbide (TaC) powder was investigated to determine the application of refractory materials for space crafts. TaC powder with an average particle size of about 10 Jim was used in this experiment. The samples were oxidized in air at 573 to 1273K for 5 min to 25 h. The weight changes were measured to estimate the oxidation properties. Exposed for short oxidation times of 5 min, started at 873K, and weight changes increased with increasing oxidation tempera Tantalum Carbide (TaC) is a hard, brittle refractory ceramic with good electrical conductivity. It is an additive in high-temperature ceramics and aerospace industries for aircraft and rockets. It is odorless and brown-gray. Tantalum carbide is widely used as a sintering additive in ultra-high temperature ceramics or as a ceramic reinforcement in high-entropy alloys due to its excellent physical properties in melting point, thermal conductivity, thermal shock resistance, and chemical stability. What is Tantalum Carbide?Tantalum Carbide (TaC) is a hard, brittle refractory ceramic with good electrical conductivity. It is an additive in high-temperature ceramics and aerospace industries for aircraft and rockets. It is odorless and brown-gray. Tantalum carbide is widely used as a sintering additive in ultra-high temperature ceramics or as a ceramic reinforcement in high-entropy alloys due to its excellent physical properties in melting point, thermal conductivity, thermal shock resistance, The size of the aluminum powder significantly affected the detonation performance of explosives. Small-sized aluminum powder is more likely to react with explosive detonation products with an advanced reaction time, large reaction volume, and fast energy release, which enhances the work capacity of explosives. Especially the addition of nano-sized aluminum powder can effectively improve the work capacity of explosives. Leonid Kaled et al. studied Alex nano-aluminum particles and their applicatio What is aluminum powder?As nano-aluminum powder (NAP) can improve the detonation performance of aluminum-containing explosives, more and more explosives with NAP as the metal ingredient have been studied. It is believed that the added nano-sized aluminum powder can significantly enhance the mechanical sensitivity of explosives. However, the mechanism for the enhancement has not been clarified. To illuminate the effects of NAP on the mechanical sensitivity of explosives, two RDX-based aluminum-co What is Titanium dioxide?Titanium dioxide is a powder and used as a white pigment in various products, such as sunscreens, paints, and plastics. Titanium dioxide may can boost and brighten white opacity as how well it scatters light. In food and drugs, which additive is known as E171 and helps define colors clearly (cracking and breakdown of materials). You can discover titanium dioxide in food products like candy, baking and cake decorations, and white sauces. It is often used to give a natural What is Titanium dioxide?Titanium dioxide (TiO2) is a fine white powder or dust that occurs naturally. It was first intentionally produced for use as a white pigment in 1923. It is naturally opaque and bright, which makes it useful for use in paper, ceramics, rubber, textiles, paints, inks, and cosmetics. Titanium dioxide is also a UV filter and an effective active ingredient in sunscreens. Exposure can irritate the eyes, nose, and throat since it has been shown to cause lung cancer in animals.

Physical and Chemical Properties of Antimony Tin Oxide Nanoparticles

What is ATO?Antimony-doped tin oxide (ATO) nanoparticles have been proven to exhibit special optical properties and excellent electrical conductivity to be used as thin film electrodes. Studies have shown that antimony-doped tin oxide possesses a high n-type electric performance. It is employed in the form of the traditionally produced aerogel thin films to collect electrons in solar cells. Introducing antimony to the tin oxide structure can significantly increase the electron conductivity makin

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Quantification of the Li2O2 and Li2O content of ATO electrodes at different states of charge

ATO cathodes from Li-O2 cells in different charge states are analyzed to quantify their Li2O2 and Li2O content. ATO cathodes are removed from the cells in an Ar-filled glove box, dried for 12 h at RT in a vacuum glass oven (Büchi, Switzerland), and then dispersed in defined amounts of ultra-pure deionized water (Millipore, ρ > 18 MΩ·cm). Due to the excess of water, Li2O2 is entirely converted to LiOH and H2O2 The formed H2O2 is then quantified as described in our previous work. Therefore, the di

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Antimony doped tin oxide is probably the most extensively studied compound

Antimony-doped tin oxide (ATO) is probably the most extensively studied compound among conductive oxides. The bulk and surface chemistry of SnO2 is well-studied and has been the subject of a detailed review. Various surface additives and lattice dopants have been reported, and the most thoroughly studied is antimony. Tin oxide-based materials have been used for various applications, from gas sensing to Li-ion battery anodes. The use of tin oxide-based materials (among many other oxides) as Li-io

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Antimony Doped Tin Oxide Synthesis

To develop reversible Li-O2 batteries, the need for novel carbon-free cathode materials is evident. In this study, we present the hydrothermal synthesis of highly conductive crystalline antimony doped tin oxide (ATO) nanoparticles, the fabrication of ATO electrodes with high surface area, and their application as cathodes in aprotic Li-O2 cells. We use a pressure transducer and an online electrochemical mass spectrometer to quantify consumed and evolved gases during the discharge and charge of L

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The Boron Nitride Advantage

Boron nitride is a high-temperature ceramic that has a structure similar to graphite. Our portfolio of hot-pressed solid materials includes pure hexagonal boron nitride and composites suitable for applications requiring excellent thermal properties combined with electrical isolation. Easily machinable and fast availability make boron nitride an outstanding choice for large-scale prototypes requiring its unique properties. The BN components portfolio features various high-purity hexagonal boron n

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Material Advantages of Boron Nitride

What is Boron Nitride?Boron Nitride is an advanced synthetic ceramic material in solid and powder form. Its unique properties – from high heat capacity and outstanding thermal conductivity to easy machinability, lubricity, low dielectric constant, and superior dielectric strength – make boron nitride a truly outstanding material. In its solid form, boron nitride is often referred to as "white graphite" because it has a microstructure similar to that of graphite. However, unlike graphite, boron n

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MoS2 based photodetectors have been designed and developed using different electrode materials

What is Molybdenum Disulfide?The Molybdenum Disulfide of hydrogen by catalytic water splitting is important for many industries, including renewable energy petroleum refining and producing methanol and ammonia in the chemical industry. Within the renewable energy field, hydrogen is an attractive candidate for storing energy produced by intermittent renewable energy sources such as solar and wind. Hydrogen is an important chemical feedstock for refining petroleum to produce methanol and ammonia.

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Ignition and Combustion Mechanism of Boron Particles

What is Boron powder?Boron powder is a kind of metal fuel with high gravimetric and volumetric calorific values, which has been widely used in military fields such as solid propellants, high-energy explosives, and pyrotechnics. However, the easily formed liquid oxide layer can adhere to the surface of boron powder and react with the hydroxyl (-OH) group of hydroxyl-terminated polybutadiene (HTPB) binder to form a gel layer that is detrimental to propellant processing and restricts the complete o

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Inorganic nanoarchitectonics designed for drug delivery and anti infective surfaces of Copper oxide

Copper oxide nanoparticles (CuONPs) have toxic effects against many microbes by generating reactive oxygen species that disrupt DNA and amino acid synthesis. It has been revealed that CuONPs have a high affinity to carboxyl and amine groups on the surface of B. subtilis cells, this affinity being higher than the interaction of silver NPs with these bacteria cells. CuONPs are also efficient against resistant bacteria pathogens, including MRSA and multidrug-resistant E. coli (Esteban et al., 2009)

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Lubricant of Molybdenum disulfide

Due to weak van der Waals interactions between the sheets of sulfide atoms, MoS2 has a low coefficient of friction. MoS2 in particle sizes of 1–100 µm is a common dry lubricant. Few alternatives exist that confer high lubricity and stability at up to 350 °C in oxidizing environments. Sliding friction tests of MoS2 using a pin-on-disc tester at low loads (0.1–2 N) give friction coefficient values of

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What precautions should be taken during fumed silica

What is Fumed silica?Fumed silica, or pyrogenic silica, is an amorphous, synthetic silica produced by vapor phase hydrolysis of chlorosilanes in a hydrogen-oxygen flame. Primary particles are fused into branched, three-dimensional secondary particles or aggregates in the flame process. Silica fume is added to Portland cement concrete to improve its properties, particularly its compressive strength, bond strength, and abrasion resistance. The silica particles then alter the surface of its host ma

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Is boron anti inflammatory

Boron is important in reducing the enzymes that cause an inflammatory response and reducing joint pain and stiffness associated with arthritis. Boron has anti-inflammatory properties that can help alleviate the symptoms of arthritis. Boric acid is less toxic if eaten or if it contacts the skin. However, in the form of borax, it can be corrosive to the eye. Borax can also be irritating to the skin. People who have eaten boric acid have had nausea, vomiting, stomach aches, and diarrhea, and in vit

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A browser that works on the Apple Watch

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