(1) The element always occurs with another chemical element, niobium .(2) However, titanium, niobium , and tantalum can influence mechanical properties still further by encouraging the formation of other similar types of precipitates.(3) The mine in question will be digging for niobium , a rare metal used as a steel alloy to save on weight and thickness, which is more resistant to corrosion and is easier to weld.(4) Steels microalloyed with both niobium and vanadium provide higher yield strength in the conventionally hot-rolled condition than that achievable with either element alone.(5) Certain strong carbide formers, notably niobium , titanium and vanadium, have effects on tempering out of proportion to their concentration.(6) Previous attempts to lower the switching temperature have incorporated low levels of elements such as tungsten, molybdenum, niobium and fluorine.(7) A previous study of the columbite-tantalite series minerals indicated a similar change for tin, tantalum, niobium , and manganese.(8) Magnesium, titanium, zirconium, niobium , tantalum, molybdenum and tungsten may be soldered if they are plated with a solderable metal coating such as silver.(9) Other elements added to improve characteristics include nickel, molybdenum, copper, titanium, aluminum, silicon, niobium , nitrogen, sulfur, and selenium.(10) The proposed mine, which would dig for niobium , a rare metal, would be carved out of land near the Kahnesatake Mohawk reserve and the village of Oka.(11) Welding causes problems due to excessive grain growth in the heat affected zone but, recently, new low-interstitial alloys containing titanium or niobium have been shown to be readily weldable.(12) The refractory metals include niobium (also known as columbium), tantalum, molybdenum, tungsten, and rhenium.(13) To alleviate this problem, small quantities of elements which are stronger carbide formers than chromium, such as titanium or niobium are commonly added.(14) The gyroscope rotors are covered with a layer of niobium , a metal that will superconduct when it is cooled by liquid helium.(15) Likewise, we could explain the known properties of Earth's core by an alloy of niobium but choose not to do so because a much more abundant element - iron - can do the job.(16) Enter the spherical coating of niobium: when niobium becomes superconducting, and the spherical superconductor spins, it does something very handy.