Das Zustandsdiagramm des Systems Kupfer–Gallium

Abstract

α‐Phase. Feste Lösung von Gallium in Kupfer; Sättigungsgrenze bei 907° 15,7%, bei 620° 20,80% und bei 20° 21,5%. Cu‐Gitter durch Galliumzusatz mäßig aufgeweitet.

PHASE EQUILIBRIA IN THE SYSTEM Cu Ga S AT 500 AND 400 C

“…Lieth et al (1966Lieth et al ( , 1967 studied the phase relations in the system Ga-S using the sublimation method, and presented the P-T-X phase diagram of this binary system. Weibke (1934), Hume-Rothery & Raynor (1937) and Betterton & Hume-Rothery (1951-1952 investigated phase relations in the system Cu-Ga and showed this binary diagram from 0° to 1,100°C from the metallurgical point of view. Hahn et al (1953) fi rst synthesized CuGaS 2 phase using the evacuated silica-tube method (900°-1000°C, 12 hours heating) from a mixture of Cu 2 S and Ga 2 S 3 , and found that it has a chalcopyrite structure.…”

Subsolidus phase relations of the Cu–Ga–N system

“…They believed that ␤ (Cu 3 Ga) had three modifications at different temperatures: ␤, ␤ and ␤ (later, ␤ and ␤ were designated as and by Hume-Rothery et al [13], respectively), and ␥ 1 , ␥ 2 and ␥ 3 were the low-tempeature modifications 0925 of the ␥ phase isostructural with the cubic Cu 9 Al 4 . Additionally, phase (CuGa 2 ) was found in the Ga-rich region [11,12], rather than the phase (∼57 at.% Ga) reported by Weibke [10]. In Hume-Rothery's work [11,12], the and phases [10] were not found.…”

“…Additionally, phase (CuGa 2 ) was found in the Ga-rich region [11,12], rather than the phase (∼57 at.% Ga) reported by Weibke [10]. In Hume-Rothery's work [11,12], the and phases [10] were not found. Later, several investigations [14][15][16][17][18][19][20][21][22][23][24][25] have been reported on the Cu-Ga system and the results are similar to those of Hume-Rothery and coworkers [11,12].…”

“…Later, Weibke [10] constructed a Cu-Ga phase diagram in the whole composition region by SEM and XRD on the annealed and quenched samples and reported four intermetallic compounds: ␤, ␥, and , in which ␥ and transfer to ␦ and phases at lower temperature, respectively. In Hume-Rothery's work [11,12], however, some different results from Weibke's were reported.…”

Martensitic Transformation and Magnetic Properties of Cu-Ga-Mn β Alloys

“…13) Weibke 14) noted the resemblance of the phase transformation behaviors of Cu-Ga alloys to that of Cu-Al alloys showing martensitic transformations during quenching. According to the previous work by Hames and Eppelsheimer, 15) the Cu-Ga-Mn phase alloys quenched from 750 C show martensite-like microstructures with a ferromagnetic property at room temperature.…”