Al-La-Zr (Aluminum-Lanthanum-Zirconium)
Binary Systems
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Sn-type hexagonal), AlLa
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Fig. 1 Al-La-Zr isothermal section at 500 C [2010Pen]. Nar- row two-phase regions are omitted
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The Al-La phase diagram [2010Pen, Massalski2] depicts the following intermediate phases: AlLa
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(space group P62m), AlLa (CeAl-type orthorhombic),
Al
Recently, [2010Pen] determined an isothermal section for this ternary system at 500 C, which depicts no ternary phases. cubic), Al7La3 (stable between 1240 and 1090 C; C32, AlB2-type hexagonal), Al3La (Ni3Sn-type hexagonal), bAl11La3 (D13; Al4Ba-type tetragonal), and aAl11La3 (aAl11La3-type orthorhombic). The Al-Zr phase diagram [Massalski2] depicts the following intermediate phases: Al3Zr (D023-type tetragonal), Al2Zr (C14, MgZn2-type hexagonal), Al3Zr2 (Al3Zr2-type orthorhombic), AlZr (Bf, CrB-type orthorhombic), Al4Zr5 (Ga4Ti5-type hexagonal), Al3Zr4 (Al3Ir4-type hexagonal), Al2Zr3 (Al2Zr3-type tetragonal), Al3Zr5 (D8m; W5Si3-type tetragonal), AlZr2 (B82; Ni2In-type hexagonal), and AlZr3 (L12; AuCu3-type cubic). There are no intermediate phases in the La-Zr system and the mutual solubility between La and Zr is negligible.
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