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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 ...
A typical composition [4] is Ca 0.93 Al 1.94 Fe 0.11 Si 0.02 O 4. It reacts rapidly with water, forming the metastable hydrate CaO·Al 2 O 3 ·10H 2 O, or a mixture of 2CaO·Al 2 O 3 ·8H 2 O, 3CaO·Al 2 O 3 ·6H 2 O and Al(OH) 3 gel. These reactions form the first stage of strength development in calcium aluminate cements.
Created Date: 8/30/2012 4:52:52 PM
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 ]
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 ...
123Movies, GoMovies, GoStream, MeMovies or 123movieshub was a network of file streaming websites operating from Vietnam which allowed users to watch films for free. It was called the world's "most popular illegal site" by the Motion Picture Association of America (MPAA) in March 2018, [3] [6] before being shut down a few weeks later on foot of a criminal investigation by the Vietnamese ...
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