Product

Product
Tungsten Blue Oxide 238

Tungsten blue oxide is the full name of TBO, which is not a defined tungsten compound, but a powdery mixture of tungsten trioxide, β-tungsten oxide (blue tungsten oxide), γ-tungsten oxide (violet tungsten oxide), ammonium tungsten bronze and hydrogen tungsten bronze. And the chemical composition and physical properties of BTO are changing. TBO may be produced by calcinating ammonium paratungstate (APT) in the airtight space or under hydrogen atmosphere/hydrogen-nitrogen mixed gas. The composition of TBO varies greatly on the basis of…

Product
84% Yellow Tungsten Oxide 587

84% yellow tungsten oxide may be used to produce high quality ultrafine tungsten carbide (WC) powder by carbonization method. The producing processes are shown as follows: 1. Mix yellow tungsten oxide (mass fraction of 84%) and carbon (mass fraction of 16%) by mixer, and granulate to particle (grain size of 3mm) by granulator, then dry and mixed material is obtained. 2. Move material to the rotary furnace for continuous reduction/carbonization, the original material changes during the reaction: WO3→WO2.9→WO2.72→WO2.0→W→W2C→WC WO3 was…

Product
Micro Fine Yellow Tungsten Oxide 616

Micro fine yellow tungsten oxide’s producing method may be classified into three types including physical method, chemical method (liquid phase method) and comprehensive method in accordance with the reaction characteristics described in the theory of crystal nucleation. And the liquid phase method can be divided into precipitation method, hydrothermal method, a microemulsion method, and sol-gel method according to different producing processes. The yellow tungsten oxide is primarily prepared by controlling the crystallization process, and it mainly goes through two steps:…

Product
Micro Fine Violet Tungsten Oxide 208

Micro fine violet tungsten oxide has unique fine needle-like crystalline morphology, and its polymer appears loose pores, which has large interspace and low apparent density. It facilitates the infiltration of hydrogen and the escape of water vapor during the reduction process so that the reduction begins not only on the surface but also in the interior. Compared with yellow tungsten oxide (YTO) and blue tungsten oxide (BTO), the violet tungsten oxide (VTO) has the following advantages: 1. Smaller apparent density…

Product
Violet Nano Tungsten Oxide 203

Violet nano tungsten oxide is the optimum raw material for producing ultrafine tungsten nanopowder with uniform grain size now as violet tungsten oxide is elongated columnar micro crystals with ammonium paratungstate fake crystalline accumulated. Its sharp split pore structure forms good permeability and can realize the fast recovery of dry hydrogen. At the same time, it can avoid generating β-W and α-W in WO2 period. Violet Nano Tungsten Oxide to Produce Nano Tungsten Powder Step one: The dry ammonium paratungstate…

Product
Yellow Nano Tungsten Oxide 495

Yellow nano tungsten oxide is prepared by hydrothermal method using tungstic acid as precursor and thiourea as basic adjuvant. The influence of different reaction conditions on the morphology and gas sensitivity of yellow tungsten oxide can be studied by changing the preparation temperature of the precursor and the content of thiourea. Transmission electron microscope (TEM) is used to characterize the synthesized product. The preparation temperature of precursor tungstic acid has important influence on yellow tungsten oxide synthesis. The spherical structure…

Product
Dark Blue Nano Tungsten Oxide 210

Dark blue nano tungsten oxide is a kind of semiconductor material with good chemical stability that may be applied in manufacturing semiconductor devices and electronic material of integrated circuits. There are studies on preparing a kind of tungsten oxide semiconductor battery, which has semiconductor chemical, photoelectric and thermoelectric and other properties. It is to say this kind of battery can produce electronic transport between two electrodes, and the battery current will increased significantly under the sun. Furthermore, the current increases…

Product
Blue Tungsten Oxide Nanopowder 200

Blue tungsten oxide nanopowder may be applied in the electronics industry. Electronics is the science of controlling electrical energy electrically and deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes, integrated circuits, associated passive electrical components, and interconnection technologies. With the advent of flexible electronics, people have realized that the future electronic products have a significant breakthrough in the field of human-computer interaction, such as nowadays the more and more popular wearable electronic products,…

Product
Blue Nano Tungsten Oxide 177

Blue nano tungsten oxide’s price affecting factors are mainly listed as follows: 1. The large production capacity of tungsten raw materials (tungsten concentrate, APT) cause an imbalance between supply and demand, directly affecting the price of blue tungsten oxide. 2. Tungsten mine cost and the nature of tungsten mine enterprise directly affect price. State-owned enterprises control a large number of BTO products and form price protection. 3. The production of tungsten concentrate is relatively concentrated, forming a certain price monopoly…

Product
Tungsten Alloy Tube 522

Tungsten alloy tube has excellent properties such as good impact toughness, crack resistance, and corrosion resistance. It is widely used in various fields and can be directly used or processed into various sizes. Characteristic Ingredients are tungsten-nickel-iron, tungsten-nickel-copper, and tungsten-nickel-copper-iron. Some tungsten alloy tubes also contain metallic elements such as cobalt, molybdenum, and chromium. Its high specific gravity, high temperature resistance, high seismic strength, low failure time, low metal extrusion rate. It has excellent properties such as good impact toughness,…

1 … 166 167 168 169 170 … 201