Study on stability of RECo5 phases (RE=Dy, Gd)

稀土学报(英文版), 2009, 27(1): 100-103. doi: 10.1016/S1002-0721(08)60200-8

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.College of Physics and Electronic Engineering, Guangxi University for Nationality, Nanning 530006, China;Key Laboratory of Non-Ferrous Metal Materials and New Processing Technology of Education Guangxi University Nanning 530004 Cina

2.Key Laboratory of Non-Ferrous Metal Materials and New Processing Technology of Education Guangxi University Nanning 530004 Cina

3.College of Physics and Electronic Engineering, Guangxi University for Nationality, Nanning 530006, China

4.

5.Department of Materals Science and Engineering Shenzhen University and Shenzhen Key Laboratory of Special Functional Materials Shenzhen 518060

6.Key Laboratory of Non-Ferrous Metal Materials and New Processing Technology of Education Guangxi University Nanning 530004 Cina

基金项目: 国家自然科学基金(50471108) Key Project of Guangxi University for Nationality(2007;2008) 广西自治区自然科学基金(0448022;0540009;0640040)

Study on stability of RECo5 phases (RE=Dy, Gd)

ZHU Qiming ^1, , ZHUANG Yinghong ^2, , LIANG Jianlie ^3, , LI Junqin ^4, , ZHOU Kaiwen ^5, ,

1.College of Physics and Electronic Engineering, Guangxi University for Nationality, Nanning 530006, China;Key Laboratory of Non-Ferrous Metal Materials and New Processing Technology of Education Guangxi University Nanning 530004 Cina

2.Key Laboratory of Non-Ferrous Metal Materials and New Processing Technology of Education Guangxi University Nanning 530004 Cina

3.College of Physics and Electronic Engineering, Guangxi University for Nationality, Nanning 530006, China

4.

5.Department of Materals Science and Engineering Shenzhen University and Shenzhen Key Laboratory of Special Functional Materials Shenzhen 518060

Keywords： eutectoid decomposition

The eutectoid decomposition reaction that occurred in RECo5 phases ( RE=Dy and Gd ) at low temperature was discussed and confirmed by X-ray powder diffraction (XRD), differential thermal analysis, and scanning electron microscopy. The decomposition temperature of the GdCo5 and DyCo5 were identified as 805.8 and 900℃, respectively. The GdCo5 and DyCo5 phases could not be found in the isothermal section of Gd-Dy-Co ternary system at 800 K. Reasons for the absence of the RE2Co7 phase in the XRD patterns were discussed in detail.

参考文献

[1]	Buschow K H J .On the eutectoid decomposition of CaCu5-type rare earth-cobalt phases[J].Journal of the Less-Common Metals,1974,37(01):91.
[2]	Buschow K H J;Den Broeder F J A .The cobalt-rich regions of the samarium and gadolinium cobalt phase diagrams[J].Journal of the Less-Common Metals,1973,33(02):191.
[3]	Buschow K H J .Intermetallic compounds of rare-earth and 3d transition metals[J].Reports on Progress in Physics,1977,40:1179.
[4]	Buschow K H J .Note on the stability of rare earth-cobalt compounds with CaCu5 structure[J].Journal of the Less-Common Metals,1972,29(03):283.
[5]	Buschow K H J .Composition and stability of CaCu5-type compounds of yttrium with iron and cobalt[J].Journal of the Less-Common Metals,1973,31(03):359.
[6]	Ray A E .A review of binary rare earth-cobalt alloy systems[J].Cobalt & Cobalt Abstract:s,1974,1:13.
[7]	Zhuang Y H;Zhu Q M;Li J Q;Zhou K W Deng J Q He W .The isothermal section of Gd-Dy-Co ternary system at 800 K[J].Journal of Alloys and Compounds,2006,422(1-2):214.
[8]	Materials Data JADE Release 5,XRD Pattern Processing[M].Materials Data Inc.(MDI),2002
[9]	Buschow K H J .Rare earth-cobalt intermetallic compounds[J].Philips Research Reports,1971,26:49.
[10]	Massalski T B;Murray J L;Bennett L H.Binary Alloy Phase Diagrams Materials Park[M].Ohio,USA,ASM International,1990:1189.
[11]	Den Broeder F J A;Buschow K H J .Coercive force and stability of SmCo5 and GdCo5[J].Journal of the Less-Common Metals,1972,29(01):65.
[12]	Ge W Q;Wu C H;Chuang Y C .Re-investigation of the Gd-Co binary system Z[J].Z Metallkd,1992,83(05):300.

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