Tungsten disulfide and tungsten diselenide are typical compounds of the rare metal tungsten, both formed by combining the transition metal element tungsten with chalcogen elements (oxygen group elements). Both exhibit excellent physical, chemical, and thermal properties and are widely used in the optoelectronic field. However, there are significant differences between them in terms of specific concepts, properties, and applications. These differences stem from the distinct characteristics of sulfur and selenium, the chalcogen elements involved, which in turn lead to variations in their crystal structures, electronic bandgaps, and chemical stabilities. Such differences further result in their pergent performance in optoelectronic devices, catalytic reactions, and lubrication applications, making each compound suitable for specific scenarios based on its unique attributes.

1.What is YG6 Tungsten Steel?

YG6 tungsten steel is a tungsten-cobalt hard alloy, a medium-grain tungsten-cobalt alloy composed of tungsten carbide (WC) powder and cobalt (Co) powder, with WC powder accounting for 94% and cobalt powder for 6%.

As a typical novel tungsten product, tungsten resin is a synthetic resin product formed by combining high-purity tungsten powder with various resin materials in different proportions. It is a gray-black material resulting from the combination of a transition metal and organic compounds, known in English as "Tungsten resin." Commonly used resin materials include nitrile rubber, chlorinated polyethylene, polypropylene, polybutene, polyurethane, and thermoplastic materials.

Tungsten resin, also known as resin tungsten alloy, tungsten-filled polymer, or tungsten polymer, is a product formed by mixing various resins (such as nitrile rubber, chlorinated polyethylene, polypropylene, polybutene, etc.) with transition metal tungsten powder through special metallurgical techniques. It is a gray-black solid material under normal temperature and pressure, featuring non-toxic, environmentally friendly, non-radioactive, high specific gravity, good plasticity, excellent hydrophobicity, strong radiation resistance, corrosion resistance, and oxidation resistance. As a result, it is widely used in aerospace, aviation, maritime, automotive, medical, and nuclear industry fields.

Pinhole tungsten alloy collimator is a critical component widely used in nuclear medicine imaging and radiation detection fields. It restricts the direction of radiation beams through a small hole (pinhole), thereby enhancing image resolution and accuracy. Due to its high density, tungsten alloy effectively absorbs and shields high-energy rays, such as gamma rays. Compared to traditional lead collimators, tungsten alloy collimators offer significant advantages in image quality, radiation protection, and manufacturing flexibility.

The production of tungsten alloy collimators combines material characteristics with manufacturing technologies, with mainstream methods including powder metallurgy, precision machining, powder injection molding, and others. These production methods cater to products with varying structural complexity and precision requirements, collectively ensuring the collimators' efficiency and stability in radiation control.

Tungsten alloy collimators, in competition with lead collimators in the field of radiation control, have gradually become the mainstream choice due to their unique composition and performance advantages. In terms of composition, tungsten alloy collimators use tungsten as the base, typically alloyed with elements such as nickel, iron, and copper to form alloys like tungsten-nickel-iron or tungsten-nickel-copper, with tungsten content reaching over 90%. This composition provides high density, high strength, and good processability. In contrast, lead collimators are mainly made of pure lead or lead-antimony alloys, where antimony enhances mechanical strength, but the material remains relatively soft overall.

As a critical radiation control component, the tungsten alloy collimator, with its unique material properties and structural design, exhibits numerous significant features in medical, nuclear industry, and scientific research fields, making it an ideal replacement for traditional lead collimators.

As a representative of high-density materials, tungsten alloy shielding components, with their high density, excellent radiation attenuation effect, heat resistance, strong mechanical strength, and environmental friendliness, are widely used in radiation protection applications in medical, industrial, nuclear engineering, and scientific research fields. Depending on their design shapes, tungsten alloy shielding components can be classified into plate-like shielding components, tubular shielding components, container-like shielding components, and complex geometric shielding components.

Tungsten alloy shielding plate is a plate-like structural component primarily composed of tungsten (typically containing 85% to 99% tungsten, with additional elements such as nickel, iron, or copper), used for radiation protection and shielding ionizing radiation (such as gamma rays, X-rays, or neutron radiation). Thanks to its high specific gravity, excellent radiation attenuation performance, heat resistance, mechanical strength, and environmental friendliness, the tungsten alloy shielding plate has become an ideal alternative to traditional lead materials in medical, industrial, nuclear engineering, and scientific fields. Compared to lead, it achieves equivalent shielding effects at a thinner thickness, reducing material usage and equipment weight, while being non-toxic, corrosion-resistant, and suitable for long-term use.