PREPARATION AND PROPERTIES OF FePd ALLOY ULTRAFINE PARTICLES

Acta Metall Sin

1993, Vol. 29

Issue (9): 18-24 DOI:

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PREPARATION AND PROPERTIES OF FePd ALLOY ULTRAFINE PARTICLES

CHEN Jian;SUN Xiukui;XU Jian;YANG Mingchuan;WEI Wenduo;HU Zhuangqi Stale Key Laboratory of Rapidly Solidified and Non-Equiliberium Alloys; Institute of Metal Research; Academia Sinica; Shenyang

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CHEN Jian;SUN Xiukui;XU Jian;YANG Mingchuan;WEI Wenduo;HU Zhuangqi Stale Key Laboratory of Rapidly Solidified and Non-Equiliberium Alloys; Institute of Metal Research; Academia Sinica; Shenyang. PREPARATION AND PROPERTIES OF FePd ALLOY ULTRAFINE PARTICLES. Acta Metall Sin, 1993, 29(9): 18-24.

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Abstract The preparation of FePd alloy ultrafine particles (UFP) by inert gas condensa-tion technique was studied. The properties of the products were measured. The results showthat the composition of the master alloy and the activity coefficient of the components havestrong effect on the products. The single phase uniform alloy UFP can only be obtained byevaporating the alloy with the composition of N_Fe = 0.5. The stability of Fe_(50) pd (50) alloy UFPis higher than that of Fe UFP. The coercivity of Fe_(50)pd_(50), is several times higher than that ofcoarse grain powder with the same composition and can reach the value more than 4.30×10_4 A/m.

Key words: FePd alloy ultrafine particles oxidation magnetic property evaporation

Received: 18 September 1993

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