Tag: Advanced Refractory Metals

Why Is Zirconium A Transition Metal?

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Why Is Zirconium A Transition Metal? When of sufficient purity, zirconium is soft and ductile. Zirconium a transition metal has good corrosion resistance and low absorption capacity for thermal neutrons. These properties are desirable in materials used for certain parts of nuclear reactors. The great increase in the production of zirconium since 1945 has been […]

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What Hafnium Is Used For?

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What Hafnium Is Used For? Hafnium occurs in zirconium ores. Because this metal must be removed from “reactor-grade” zirconium, the production of hafnium is largely dependent on zirconium production, as discussed later. Its melting point is 4032℉. However, it has not been available in sufficiently large quantities to have any extensive elevated-temperature applications other than […]

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What Can Rhenium Be Used For?

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What Can Rhenium Be Used For? Rhenium is classified as a scarce refractory metal. It has the second-highest melting point of any of the metals and has a relatively high density. Rhenium is produced as a powder from molybdenite, which also contains rhenium sulfide. The rhenium powder is consolidated by pressing and resistance sintering in […]

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How Does Chromium Work?

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How Does Chromium Work? In this article, we will take a look at how chromium works. The melting point of chromium is the lowest of the abundant refractory metals, but it is more than 700 degrees above that of iron. The density of chromium is slightly less than that of iron. At elevated temperatures, it […]

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Will Molybdenum Combine with Other Elements?

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Will Molybdenum Combine with Other Elements? Molybdenum. As shown in Table 2, the melting temperature of molybdenum is 695 degrees below that of tantalum. Because of its high melting point and relative abundance in the United States, it was the first of the refractory metals considered in this country for high-temperature structural applications. The primary […]

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How Do We Use Molybdenum?

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How Do We Use Molybdenum? Molybdenum, whose chemical symbol is Mo, was first recognized as an element in 1778. Until that time, the mineral molybdenite—the most important source of molybdenum—was believed to be a lead mineral because of its metallic gray color, greasy feel, and softness. In the late 19th century, French metallurgists discovered that […]

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The Role of Niobium in Superalloys

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The Role of Niobium in Superalloys Refractory elements are important alloying additions in both nickel-base and iron-nickel-base superalloys. They are responsible for the increased high-temperature mechanical properties present in current superalloy systems. In this article, we’ll take a look at the role of niobium in superalloys. It has long been established that nickel-base and iron-nickel-base […]

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Which Elements Have the Highest Melting Point?

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Which Elements Have the Highest Melting Point? As we all know, the melting point is the temperature at which a substance converts from a solid state to a liquid state. Some of the metals show very high melting points at least 2,000 degrees Celsius, and they also have very high physical strength. These metals are […]

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How Titanium Is Used Today?

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How Titanium Is Used Today? In today’s article, we’ll take a look at how titanium is used today. Titanium is a hard, shiny, and strong metal. It is as strong as steel but much less dense. It is therefore important as an alloying agent with many metals including molybdenum, aluminum, and iron. Titanium metal connects well with […]

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Niobium – A Material for Innovations with Great Future Potential

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Niobium – A Material for Innovations with Great Future Potential In this article, we will introduce niobium, a material for innovations with great future potential. In actual fact, niobium, like all other metals, is gray. However, by applying a pacifying oxide layer, we allow our metal to gleam in a beautiful array of colors. Niobium is […]

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