Information

Information
Pure Tungsten Electrodes: Key Material in the Welding Industry 90

Pure tungsten electrodes, as one of the earliest electrodes used in argon arc welding, have consistently played a significant role in the welding industry. This type of electrode, characterized by its high melting point, high density, corrosion resistance, and excellent electrical and thermal conductivity, has become an indispensable key material under specific welding conditions. Pure tungsten electrodes contain up to 99.5% tungsten. This high purity tungsten material provides the electrode with a very high electron work function but also poses…

Information
What Are the Types of Tungsten Electrodes? 87

The types of tungsten electrodes are mainly classified according to the different rare earth oxides or alloy elements doped in them. Here are the common types of tungsten electrodes and their characteristics: I. Pure Tungsten Electrode (WP) Composition: Contains over 99.9% tungsten. Color Code: Green. Characteristics: High melting and boiling points, resistant to melting, volatilization, and burnout, with minimal tip contamination. However, it has a higher electron emission work function and moderate arc stability. Application: Primarily used for AC welding…

Information
What Are the Preparation Methods of Tungsten Disulfide Nanosheet? 76

Tungsten disulfide nanosheet (WS? nanosheet) is a typical transition metal tungsten compound. There are many different preparation methods, each of which has its own unique principles, operation procedures, advantages and disadvantages. Mechanical exfoliation Mechanical exfoliation is a classic two-dimensional material preparation technology that separates a single-layer or few-layer WS? nanosheet from bulk materials by physical means. This method uses tape to repeatedly stick bulk WS? crystals, or uses a special mechanical device to apply external force to overcome the weak…

Information
What Are the Factors That Affect Tungsten Disulfide Nanosheet Performance? 51

Tungsten disulfide nanosheet (WS? nanosheet) is a typical two-dimensional nanomaterial with a large specific surface area, a low friction coefficient, good electrochemical performance, and optical properties. It has great potential in the fields of nanoelectronics, optoelectronic devices, flexible electronics, lubricating materials, and chemical catalysis. So, what are the factors that affect tungsten disulfide nanosheet performance? Chemical composition Tungsten disulfide nanosheet is an inorganic compound composed of tungsten and sulfur. Tungsten atoms are surrounded by six sulfur atoms in an octahedral…

Information
What Are the Electrical Properties of Tungsten Disulfide Nanosheet? 52

Tungsten disulfide nanosheet (WS? nanosheet), as a typical transition metal sulfide material, is a semiconductor material with a hexagonal crystal structure (space group P6?/mmc). Each layer is a sandwich structure formed by a W atomic layer sandwiched between two S atomic layers. Research indicates that a single layer of WS? has a direct band gap of about 1.8eV, enabling it to exhibit a quantum efficiency superior to that of indirect-band-gap semiconductors in the optoelectronic device field. The room-temperature carrier mobility…

Information
Applications of Tungsten Wire in the Medical Field 80

Tungsten wire, as a metallic material possessing extremely high melting point, hardness, and electrical and thermal conductivity, not only holds a significant position in industries such as manufacturing, electronics, and aerospace but has also demonstrated unique value in medical applications in recent years. I. Surgical Instruments Electrosurgical Dissection Needles: With its fine diameter, high tensile strength, excellent electrical conductivity, and high temperature resistance (melting point of 3422°C), tungsten wire is an ideal material for manufacturing minimally invasive surgical instruments, such…

Information
Why Does the Honeycomb Electric Field Fume Purifier Use Tungsten Needle? 52

When considering why the honeycomb-electric-field oil-fume purifier selects the tungsten needle as its core component, one must deeply understand the unique properties of the tungsten needle and its crucial role in the oil-fume purification process. In brief, the working principle of the honeycomb-electric-field oil-fume purifier is to utilize an ionization-separation structure similar to the superposition of honeycomb cylinders. The cathode tungsten needle discharges, ionizing the oil-fume exhaust-gas molecules into positively-charged particles, which are then adsorbed by the surrounding anode tube…

Information
What Are the Uses of High-Density Tungsten Alloy? 68

High-density tungsten alloy is mainly made of tungsten (usually between 85% and 99%) as the matrix, with nickel, iron, copper and other elements added through the powder-metallurgy process. It is characterized by high density, high strength and hardness, good electrical and thermal conductivity, a small thermal-expansion coefficient, excellent corrosion and oxidation resistance, good machinability and weldability, and outstanding radiation-absorption capacity. Due to its unique properties, high-density tungsten alloy has numerous applications. Aerospace In the aerospace field, high-density tungsten alloy is…

Information
What Are the Uses of Tungsten Disulfide Nanosheet? 69

Tungsten disulfide nanosheet (WS? nanosheet) is a two-dimensional nanomaterial with a unique structure. Its crystal structure consists of a layer of tungsten atoms sandwiched between two layers of sulfur atoms, forming a sandwich-like layered arrangement through covalent bonds and van der Waals forces. This structure gives WS? nanosheet excellent physical and chemical properties, making it widely used. In the field of lubrication, tungsten disulfide nanosheet is known as “revolutionary material in the field of lubrication.” Its ultra-low friction coefficient and…

Information
Tungsten Oxide: Opening a New Era of Energy-Saving in Smart Building 55

Tungsten oxide is a typical transition metal oxide and a common tungsten compound. Its chemical formula is usually expressed as WO?, but in practical applications, due to the existence of oxygen vacancy, its chemical composition may deviate from the ideal stoichiometric ratio, so it is often expressed as WO??? (where x is between 0 and 1). This oxygen vacancy phenomenon causes tungsten to be pentavalent or tetravalent in tungsten oxide, further enriching its physical and chemical properties. The crystal structure…

1 … 47 48 49 50 51 … 362