Фазовая диаграмма системы Co-P

К оглавлению: Другие диаграммы (Others phase diargams)


Co-P (Cobalt-Phosphorus) K. Ishida and T. Nishizawa The assessed phase diagram for the Co-P system is based primarily on [09Zem], with review of the data of [38Has] and [60Run]. The equilibrium phases are (1) the liquid, L; (2) the Co-rich fcc terminal solid solution, (aCo), with negligible solid solubility of P; (3) the Co-rich cph terminal solid solution, (eCo), stable up to 422 C; (4) the orthorhombic phase, Co2P, with an extended homogeneity range at higher temperatures, stable up to the congruent melting temperature of 1386 C; (5) the orthorhombic intermediate compound, CoP, with a melting temperature greater than 1000 C; (6) the monoclinic compound, CoP2; and (7) the cubic intermediate phase, CoP3. [67Kan] studied the phase changes in a Co-10.5% P alloy obtained by electrolytic deposition. The main phase as deposited was (aCo); it decomposed into (aCo) and Co2P during heat treatment. The specimens of Co-(4 to 24) at.% P prepared by electrodeposition were a mixture of (aCo) and (eCo) [68Kan]. An electron diffraction study of the amorphous thin films produced by electroless deposition showed that the nearest-neighbor distance is slightly larger than that observed in the crystalline state [71Dav]. The microstructure of amorphous films was studied by electron microscopy [84Son, 85Bes] and X-ray diffraction [79Chi, 84Son]. The average distance of Co-Co increases with increasing P content [79Chi]. [74Che] and [78Che] investigated phase transitions from the amorphous to the crystalline state. The structure of amorphous Co-P alloys was reviewed by [76Car]. The Curie temperature of (aCo) was found to decrease when P was added [38Has]. The magnetic moment of Co in the mixture of (aCo) and (eCo) solid solutions produced by the electrodeposition method decreased nearly proportionally to P. [78Don] confirmed that the CoP2 compound is a diamagnetic semiconductor. The magnetic properties of amorphous Co-P alloys have been studied by [74Car], [78Die1], and [78Die2]. Electrodeposited amorphous alloys have a high permeability [78Die1]. The magnetic anisotropy observed in the Co-P amorphous alloy and the microstructural features were discussed by [78Die2], [84Son], and [85Bes]. The magnetic properties of stable and metastable phases are summarized in the complete evaluation. 09Zem: S. Zemczuzny and J. Schepelew, Z. Anorg. Allg. Chem., 64, 245-257 (1909) in German. 38Has: U. Haschimoto, J. Jpn. Inst. Met., 2, 67-77 (1938) in Japanese. 47Now: H. Nowotny, Z. Anorg. Allg. Chem., 254, 31-36 (1947) in German. 60Run: S. Rundqvist, Acta Chem. Scand., 14, 1961-1979 (1960). 62Run: S. Rundqvist, Acta Chem. Scand., 16, 287-292 (1962). 67Kan: T. Kanbe, K. Nemoto, H. Mitani, and K. Shoji, Kinzoku Hyomen Gijutsu, 18, 142-145 (1967) in Japanese. 68Kan: T. Kanbe and K. Kanematsu, J. Phys. Soc. Jpn., 24, 1396 (1968). 68Mun: R.A. Munson and J.S. Kasper, Inorg. Chem., 7, 390-391 (1968). 71Dav: L.B. Davies and P.J. Grundy, Phys. Status Solidi (a), 8, 189-197 (1971). 72Don: P.C. Donohue, Mater. Res. Bull., 7, 943-948 (1972). 73Sel: K. Selte and A. Kjekshus, Acta Chem. Scand., 27, 3195-3206 (1973). 74Car: G.S. Cargill III and R.W. Cochran, J. Phys. (Paris), 35, C4, 269-278 ( 1974). 74Che: L.A. Chekanova, R.S. Iskhakov, G.I. Fish, R.G. Khlebopros, and N.S. Chistyakov, Zh. Eksp. Teor. Fiz. Pis'ma, 20, 73-76 (1974) in Russian; TR: JETP Lett., 20(2), 31-32 (1974). 76Car: G.S. Cargill III, Rapidly Quenched Metals, Massachusetts Institute of Technology, Cambridge, 293-321 (1976). 77Ack: J. Ackermann and A. Wold, J. Phys. Chem. Solids, 38, 1013-1016 (1977). 78Che: L.A. Chekanova, R.S. Iskhakov, R.G. Khlebopros, N.S Chistyakov, and G.I. Fish, Fiz. Tverd. Tela, 20, 3501-3503 (1978) in Russian; TR: Sov. Phys. Solid State, 20, 2026-2027 (1978). 78Die1: G. Dietz and K. Klett, J. Magn. Magn. Mater., 8, 57-60 (1978). 78Die2: G. Dietz, H. Bestgen, and J. Hungenberg, J. Magn. Magn. Mater., 9, 208- 210 (1978). 79Chi: G.C. Chi and G.S. Cargill III, J. Appl. Phys., 50, 2713-2720 (1979). 83Nis: T. Nishizawa and K. Ishida, Bull. Alloy Phase Diagrams, 4(4), 387-390 ( 1983). 84Son: R. Sonnberger, H. Bestgen, and G. Dietz, Z. Phys. B, 56, 289-295 (1984). 85Bes: H. Bestgen, Rapidly Quenched Metals, Vol. 1, Elsevier, 443-446 (1985). Submitted to the APD Program. Complete evaluation contains 1 figure, 4 tables, and 26 references. 1