InformationChina Tungsten Industry News Center第54頁

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Efficient Catalysis: Yellow Tungsten Oxide Leads the Green Revolution 2025-02-10 71

In today’s world where issues of global climate change and environmental protection are increasingly urgent, the scientific and industrial communities are dedicating unprecedented enthusiasm to the research of efficient and eco-friendly catalyst materials. In this journey of exploring green technology, yellow tungsten oxide, this seemingly unremarkable chemical substance, is quietly leading a green revolution with its unique catalytic performance and environmental characteristics. As an important inorganic compound, yellow tungsten oxide exhibits extraordinary potential in the field of catalysis. Its efficient…

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Yellow Tungsten Oxide Properties and Applications 2025-02-10 71

Yellow tungsten oxide, with the chemical formula WO?, is an important member of the tungsten oxide family, appearing as yellow or yellow-green powdered crystals. Its color variation is closely related to its crystal size: it exhibits a bright yellow color when the crystal size is approximately 1.5 micrometers and shifts to green when the crystal size increases to 15 micrometers. Despite the difference in appearance color, its basic characteristics remain consistent. I. Physical Properties of Yellow Tungsten Oxide Appearance: Yellow…

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Tungsten Rods: Ideal for High-Tech & Industrial Use 2025-02-08 74

Tungsten rods, with their exceptional properties such as low thermal expansion, outstanding thermal conductivity, superior electrical resistivity, and high elastic modulus, have emerged as the ideal material choice for numerous high-tech equipment and industrial applications. In the field of precision manufacturing, tungsten rods are widely used in critical components such as support wires, guide wires, and printer needles. Their high strength and precision ensure the stability and reliability of these components even under long-term, high-load working conditions. In the electronics…

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Tungsten Bars: The Solid Backbone of Modern Industry 2025-02-08 73

Among the myriad of metal materials, tungsten bars may not be well-known to the general public, yet they are indispensable “behind-the-scenes heroes” of modern industry. From the filaments that illuminate the night to spacecraft shuttling through space, and to medical equipment safeguarding health, tungsten rods, with their exceptional properties, silently support the development of modern technology. As Solid as a Rock, as Steady as Mount Tai Tungsten boasts the highest melting point (3422°C) of all metals, along with an extremely…

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Tungsten Oxide: From Industrial Foundation to Future Technology 2025-02-07 78

Tungsten oxide, this seemingly ordinary inorganic compound, plays an indispensable role in modern industrial and technological development due to its unique physicochemical properties. From traditional metallurgical industries to emerging high-tech fields, tungsten oxide demonstrates strong adaptability and unlimited potential through its diverse forms and wide range of applications, becoming an important material for driving modern industrial progress and technological innovation. A Solid Support in Industrial Fields As a core intermediate in the tungsten smelting industry, tungsten oxide plays a crucial…

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Exploring the Colorful World of Tungsten Oxides 2025-02-07 93

In the realm of tungsten oxides, the colorful tungsten oxide family shines like gemstones, exuding unique charm and adorning the brilliant starry sky of chemistry and materials science. From the vivid yellow of tungsten oxide, to the profound blue, and the mysterious purple, each oxide interprets the magic and beauty of nature with its unique color and physical properties. Yellow tungsten oxide, also known as tungsten trioxide, with the chemical formula WO3 and abbreviated as YTO, resembles a golden wheat…

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Tungsten Trioxide Ceramic: High-Tech Multifunctional Material 2025-02-06 59

Tungsten trioxide (WO?) ceramic is an advanced ceramic material with high-purity tungsten trioxide as its main component. Thanks to its unique physical and chemical properties, it demonstrates enormous application potential in numerous high-tech fields. Outstanding Characteristics of Tungsten Trioxide Ceramic: Excellent Electrical Properties: Tungsten trioxide ceramic features nonlinearity and a high dielectric constant, making it suitable for manufacturing varistor ceramics, ceramic capacitors, and other electronic components. Unique Optical Properties: Tungsten trioxide ceramic exhibits electrochromic properties, suitable for fabricating light (or…

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Tungsten Molybdenum Alloy 2021-10-14 2,644

Tungsten alloys have three kinds of types, tungsten molybdenum alloys, niobium tungsten alloys and hard alloys according to different added elements. Tungsten Molybdenum Alloy is an alloy containing molybdenum and tungsten, which includes two series of molybdenum tungsten alloy with molybdenum as the main additive element and tungsten molybdenum alloy with tungsten as the main additive element. The two alloys can be formed in any ratio and are completely solid solution alloys at many temperatures. The nominal compositions of commonly…

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Production Technology of High Density Tungsten Alloy 2021-10-14 930

Strict control of high density tungsten alloy production technology has a vital impact on the strength, brittleness, impact toughness, hardness and corrosion resistance of products. There is an efficient and stable high density tungsten alloy production technology comprises the following steps: 1.Material Mixing: According to the composition requirements of the high-density tungsten alloy to be prepared finally, a plurality of metal powders to be mixed prepared in advance are simultaneously put into an inclined mixer to be fully and uniformly…

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Tungsten Alloy with High Specific Gravity is an alloy with tungsten as the main content and other elements added, which can form various classifications according to the added elements. 1.W-Ni-Cu Alloy W-Ni-Cu alloy is mainly made by mixing, pressing and sintering W, Ni and Cu powders. Among them, W content is generally 80%~90%, and Ni and Cu binders are added to form a two-phase alloy after liquid phase sintering, and the density is close to the theoretical density. In this alloy, except W and Ni, the remaining content is mainly copper, which can improve the strength, plasticity and conductivity of tungsten alloy. In terms of properties, the alloy has no magnetism for special application, and other physical properties are the same as the overall properties of tungsten alloy. 2.W-Ni-Fe Alloy W-Ni-Fe alloy is made by mixing, pressing and sintering W, Ni and Fe powders. Among them, tungsten accounts for 80%~90%, while nickel and iron play the role of binder. Two-phase alloy is formed after liquid phase sintering, and its density is close to theoretical density. Nickel is an essential element in liquid phase sintering process, and its content is generally 0.5%~12%. If it is more than 12%, the heat resistance and corrosion resistance of the alloy will decrease. Iron can improve strength and plasticity in this alloy. This alloy has certain magnetism, and can be used as the core material of armor-piercing projectile, high momentum killing debris such as sub munitions, counterweight and other industrial fields. Compared with W-Ni-Cu alloy, this alloy has better strength and plasticity. 3.W-Ni-Cr Alloy Cr element in W-Ni-Cr alloy is used as solution reinforce additive element in this alloy, which can improve corrosion resistance and high temperature oxidation resistance, and can also improve the high temperature strength and hardness of the alloy. The general content is 0.2%~5%. The hardness of this alloy is high (HV=600, while the hardness of W-Ni- Fe alloy is HV=310). The mechanical properties of the alloy depend on the ratio of Cr/Ni. When the ratio is small, the plasticity is better and the hardness is slightly higher. When the ratio is large, the hardness is high, the tensile strength is low, and there is almost no plasticity. 4.W-Ni-Mo Alloy Mo element in this alloy has the same effect as Cr element in W-Ni-Cr alloy, which is used as solution reinforce additive element, and its content is 0~25%. It can be dissolved in the bonding phase during liquid phase sintering, which plays the role of solid solution strengthening and grain refinement, and effectively improves the mechanical properties, high temperature strength and thermal shock resistance of the alloy. The results show that with the increase of Mo content, the yield strength, ultimate tensile strength and hardness of the alloy will increase, while the ductility and sintering density will decrease. 5.W-Ni-Co Alloy As a synergistic reinforce additive element, Co can improve the high-temperature properties of the alloy, especially strengthen the bonding phase, avoid the formation of inter-alloy compounds, and obviously improve the high-temperature strength and hardness of the alloy, with a general content of 0.5%~5%. The results show that when the temperature is higher than 500 degrees centigrade, the strength and plasticity of this alloy are obviously higher than those of W-Ni-Fe alloy.

Classifications of Tungsten Heavy Alloys 2021-10-14 937

Tungsten Heavy? Alloy with High Specific Gravity is an alloy with tungsten as the main content and other elements added, which can form various classifications according to the added elements. 1.W-Ni-Cu Alloy W-Ni-Cu alloy is mainly made by mixing, pressing and sintering W, Ni and Cu powders. Among them, W content is generally 80%~90%, and Ni and Cu binders are added to form a two-phase alloy after liquid phase sintering, and the density is close to the theoretical density. In…