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A calcium–aluminium-rich inclusion or Ca–Al-rich inclusion (CAI) is a submillimeter- to centimeter-sized light-colored calcium- and aluminium-rich inclusion found in carbonaceous chondrite meteorites. The four CAIs that have been dated using the Pb-Pb chronometer yield a weighted mean age of 4567.30 ± 0.16 Myr.
The following inclusion types can also be found in aluminium alloys: alumina needles (Al 2 O 3), nitrides (AlN), iron oxides (FeO), manganese oxides (MnO), fluorides (Na 3 AlF 6, NaF, CaF 2, …), aluminium borides (AlB 2, AlB 12), borocarbides (Al 4 C 4 B). Bone ash (Ca 3 (PO 4) 2) sometimes added to patch cracks in the trough can be found as ...
oxides (simple — FeO, MnO, Cr 2 O 3, SiO 2, Al 2 O 3, TiO 2 and others; compound — FeO·Fe 2 O 3, FeO·Al 2 O 3, FeO·Cr 2 O 3, MgO·Al 2 O 3, 2FeO·SiO 2 and others; The majority of inclusions in metals are oxides and sulfides since the content of phosphorus is very small. Silicates are very detrimental to steels, especially if it has to ...
Al-Ca composite is a high-conductivity, high-strength, lightweight composite consisting of sub-micron-diameter pure calcium metal filaments embedded inside a pure aluminium metal matrix. The material is still in the development phase, but it has potential use as an overhead high-voltage power transmission conductor . [ 1 ]
Calcium aluminosilicate, an aluminosilicate compound with calcium cations, most typically has formula CaAl 2 Si 2 O 8. [1] In minerals, as a feldspar, it can be found as anorthite, an end-member of the plagioclase series.
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AlCp*, consisting of aluminium (I) bonded with the pentamethylcyclopentadiene anion ((CCH3) 5 −), was first synthesized in 1991 by Dohmier et al. [12] (AlCp*) 4, a yellow crystalline solid, is first produced from the combination of AlCl and MgCp* 2. [6] When vaporized, the long Al-Al bonds (276.9 pm) [12] split, and monomeric molecules of ...
The main constituent, and also the most reactive phase, of calcium aluminate cements is the monocalcium aluminate (CaAl 2 O 4 = CaO · Al 2 O 3, also written as CA in the cement chemist notation). It usually contains other calcium aluminates as well as a number of less reactive phases deriving from impurities in the raw materials.