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Tungsten Alloy Construction Part in Gas Laser 301

Tungsten alloy construction part in gas laser has high density, high strength and high melting point. It also has good thermal conductivity and wear resistance. It is the best raw materials for the production of gas lasers, which can extend the life of gas laser. Gas laser is device that uses gas or steam as a working substance to generate laser light, which has a wide range of uses. It can produce holograms; in the field of laser printing, it…

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Tungsten Alloy Ignition Tube for Rocket Engine 348

Tungsten alloy ignition tube for rocket engine is a high temperature resistant material with high melting point, high strength, high temperature resistance, wear resistance and other characteristics. It is the most ideal raw material for making rocket ignition tubes. When the rocket is launched, high temperatures occur in the nozzle and combustion chamber. Ordinary metal materials are difficult to withstand such high temperatures. Tungsten alloy ignition tube for rocket engine has the property of high temperature resistance. The rocket igniter…

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Tungsten Alloy for Plasma Technique 292

Tungsten alloy for plasma technique has excellent properties such as high temperature resistance, corrosion resistance and wear resistance. It is widely used in the field of plasma technology and is the best raw materials for producing plasma parts. Plasma technology is a technique that uses plasma to obtain a high temperature heat source. In the chemical industry, the use of plasma technology enables a series of reaction processes. After repeated verification by scientists, it was found that the tungsten alloy…

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Chemically Pure Sodium Tungstate 1,037

Chemically pure sodium tungstate is a good inhibitor for carbon steel in simulated seawater, and the inhibition efficiency increased with the increase of inhibitor concentration, and the adsorption of sodium tungstate onto the surface of carbon steel followed the amended Langmuir adsorption isotherm equation. Composite of sodium tungstate and SLS has better corrosion performance than that of sodium tungstate alone, which shows excellent synergistic effect. Compound inhibitor has higher efficiency, with lower Tafel slope on the cathode and anode and…

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High Purity Sodium Tungstate Dihydrate 1,102

High purity sodium tungstate dihydrate is a colorless or white crystalline powder that can be decomposed by strong acids into tungstic acid (water-insoluble). It is easily weathered in dry air. And it is stable in air, but heated to lose crystal water into anhydrous salt at 100°C. Besides, it is soluble in water and insoluble in ethanol. High purity sodium tungstate dihydrate can be applied for the preparation of tungstic acid, and tungstate, etc. And it can also be used…

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99.5% Tungstic Acid 705

99.5% tungstic acid may be prepared by “dissociation-slurrying-acid decomposition” process. This process uses less raw materials and auxiliary materials. And it is easy to operate. So, it is cost-saving and time-saving. Some people have conducted experiments on acid decomposition of tungstic acid, acid decomposition of ammonium paratungstate (APT), and acid decomposition of CaWO4 to make tungstic acid. The first two methods have been found to be slow to decompose. As the decomposition reaction proceeds, the acidity decreases continuously, so that…

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Hydrogen Molybdenum Tungsten Bronze 429

Hydrogen molybdenum tungsten bronze (HxMo(W)O3, 0<x≤2) may be used as electrocatalyst for direct small organic molecule fuel cell. Platinum Modified with Hydrogen Molybdenum Tungsten Bronze as Electrocatalyst for Direct Small Organic Molecule Fuel Cell There are several problems that limit the application of direct small organic fuel cell, including the use of precious platinum and the activity loss of platinum due to the intermediates poisons from the oxidation of small organic molecules. These problems have attracted wide interest and many…

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Ammonium Tungsten Bronze 430

Ammonium tungsten bronze may be prepared by thermal reduction of ammonium paratungstate (APT). APT Thermal Reduction to Prepare Ammonium Tungsten Bronze 1. Experiment Equipment Three-stage heating tube type resistance furnace is used; Zone of constant temperature of the furnace tube is 300mm; The temperature difference is ±8°C; And the potentiometer automatically records the temperature. 2. Experiment Steps 10g APT was placed in a platinum boat, and the boat was placed in a quartz reactor, filled with nitrogen (N2) for more…

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Potassium Tungsten Bronze 439

Potassium tungsten bronze (KxWO3) may be prepared by hybrid microwave method using K2WO4, WO3 and W powder as raw materials. With the increase of nominal potassium content x, the crystal structure of KxWO3 transforms from hexagonal (0.20≤x≤0.33) to tetragonal (0.50≤x≤0.60). The tetragonal potassium tungsten bronze show metallic behavior. The hexagonal potassium tungsten bronze show semiconducting behavior and the charge density wave (CDW) transition is observed in K0.22WO3 around 265K. The KxWO3 has two types of crystal structure, hexagonal structure and…

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Sodium Tungsten Bronze 423

Sodium tungsten bronze (NaxWO3, 0<X<1) may be prepared by low temperature hydrothermal synthesis method. Low Temperature Hydrothermal Synthesis of Sodium Tungsten Bronze 1. Add dilute hydrochloric acid to 0.25 mol?L-1 Na2WO4 solution dropwise under stirring until the pH is around 6.5. 2. The NaBH4 solution was dropped into the Na2WO4 solution at a rate of 2~4d/s. 3. Keep the pH of the solution at 6.5±0.2 by adding dilute hydrochloric acid dropwise. 4. The obtained dark green suspension was allowed to…

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