Magnetization and structure of Fe-Al powders.

• Autorzy: Fujii M. , Saito K. , Wakayama K. , Kawasaki M. , Yoshioka T. , Isshiki T. , Nishio K. , Shiojiri M.
• Konferencja: XV Physical Metallurgy and Materials Science Conference on Advanced Materials & Technologies AMT'98, Kraków-Krynica, Poland, 17-21 May, 1998
• Języki publikacji: EN

Abstrakty

EN

A few micrometers-sized Fe1-xAlx (x=0.35-0.42) powders prepared by atomizing method have the B2 structure and are paramegnetic. The powder milled for several hours is magnetized and has a spontaneous magnetization as great as 100 emu/g. The milled powder particles become flakes, which are composed of lamellae expanding parallel to the (110) plane and having heavily distorted lattice. High-resolution transmission electron microscopy and electron diffraction revealed that structures appear in very thin areas within the lamellae. These superlattices indicate the creation of large number of antiphase boundaries, which induce ferromagnetism. When the milled powder is heated at 100-400 degrees centigrade the magnetization decreases to a few tens emu/g, the lamella structures being kept.

Słowa kluczowe

EN

magnetization; iron; aluminium; alloy; ferromagnetism; atomized powder; lattice; electron microscopy

PL

magnetyzacja; żelazo; aluminium; stop; ferromagnetyzm; proszek rozpylany; sieć krystaliczna; mikroskopia elektronowa

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 1998
• Tom: R. XIX, nr 4
• Strony: 860--863

Twórcy

autor

Fujii M.

autor

Saito K.

autor

Wakayama K.

autor

Kawasaki M.

autor

Yoshioka T.

autor

Isshiki T.

autor

Nishio K.

autor

Shiojiri M.

• TDK Co., Materials Research Center, Narita