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Nickel titanium, also known as nitinol, is a metal alloy of nickel and titanium, where the two elements are present in roughly equal atomic percentages.Different alloys are named according to the weight percentage of nickel; e.g., nitinol 55 and nitinol 60.
Ti 3 O 5, described as a Ti(IV)-Ti(III) species, is a purple semiconductor produced by reduction of TiO 2 with hydrogen at high temperatures, [41] and is used industrially when surfaces need to be vapor-coated with titanium dioxide: it evaporates as pure TiO, whereas TiO 2 evaporates as a mixture of oxides and deposits coatings with variable ...
Structure of [Ni 2 (CN) 6] 4− ion [44] Nickel(I) complexes are uncommon, but one example is the tetrahedral complex NiBr(PPh 3) 3. Many nickel(I) complexes have Ni–Ni bonding, such as the dark red diamagnetic K 4 [Ni 2 (CN) 6] prepared by reduction of K 2 [Ni 2 (CN) 6] with sodium amalgam. This compound is oxidized in water, liberating H 2 ...
Al is the main γ' former. It also forms a protective oxide Al 2 O 3, which provides oxidation resistance at higher temperature than Cr 2 O 3. Ti 1-4% Ti forms γ'. C 0.05-0.2% MC and M 23 C 6 (M = metal) carbides are the strengthening phase in the absence of γ'. B,Zr 0-0.1% Boron and zirconium provide strength to grain boundaries.
[2] The composition of alnico alloys is typically 8–12% Al, 15–26% Ni, 5–24% Co, up to 6% Cu, up to 1% Ti, and the rest is Fe. The development of alnico began in 1931, when T. Mishima in Japan discovered that an alloy of iron, nickel, and aluminum had a coercivity of 400 oersteds (32 kA/m), double that of the best magnet steels of the time.
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The Ti-3Al-2.5V alloy, which consists of 3% aluminum and 2.5% vanadium, was designed for low-temperature environments, maintaining high toughness and ductility even under cryogenic conditions in space. [37] It is used in aerospace components such as aircraft frames and landing gear. [38]
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