Month: November 2017

What are Refractory Metals

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Refractory metals are different. As a group they provide a number of unique characteristics – such as resistance to high heat, corrosion and wear – making them useful in a multitude of applications. The next time you climb into your automobile take note that you are surrounded by components which are made of refractory metals […]

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How to Produce Silicon Carbide

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Silicon carbide (SiC) is an interesting material that has found application in a variety of industries. The two best known applications of this material are its use as an abrasive material and its more recent use as a wide band gap semiconductor for high power, high temperature electronic devices. The high hardness of this material, […]

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How Do We Use Molybdenum?

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

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The Role of Niobium in Superalloys

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Refractory elements are important alloying additions in both nickel-base and ironnickel-base superalloys. They are responsible for the increased high temperature mechanical properties present in current superalloy systems. It has long been established that nickel-base and iron-nickel-base superalloys are “super” because they are strengthened by a dispersion of fine and coherent gamma-prime (y) and at times […]

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The Metal that doesn’t Fear Aqua Regia—Tantalum

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Corrosion is the damage or qualitative change of material under the influence of the environment. The corrosion of metal and alloy is mainly caused by chemical or electrochemical damage. Common corrosion-resistant metals are austenitic stainless steel, Hastelloy, Monel alloy, titanium and titanium alloy, platinum, gold, rhodium and other precious metals. Few people know that the […]

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