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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 ...
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.
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 ]
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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 ...
An inclusion map may also be referred to as an inclusion function, an insertion, [1] or a canonical injection. A "hooked arrow" ( U+ 21AA ↪ RIGHTWARDS ARROW WITH HOOK ) [ 2 ] is sometimes used in place of the function arrow above to denote an inclusion map; thus: ι : A ↪ B . {\displaystyle \iota :A\hookrightarrow B.}