Results 251 to 260 of about 80,515 (299)

Tracer diffusion in amorphous alloys

Materials Science and Engineering, 1988
Abstract Self-diffusion in various iron-based amorphous metal-metalloid alloys and in amorphous metal-metal systems Fe x Zr 100−x was investigated using radioactive 59 Fe and 95 Zr tracer atoms in combination with ion-beam sputtering for serial sectioning.
J. HORVÁTH, J. OTT, K. PFAHLER, W. ULFERT   +3 more
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Amorphous Semiconductor Alloys

SPIE Proceedings, 1985
Amorphous silicon (a-Si) based alloys have attracted a considerable amount of interest because of their applications in a wide variety of technologies. However, the major effort has concentrated on inexpensive photovoltaic device applications and has moved from a laboratory curiosity in the early 1970's to viable commercial applications in the 1980's ...
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Properties of amorphous Si:F:H alloys

Journal of Non-Crystalline Solids, 1980
Previously we have shown that amorphous silicon-based alloys containing F and H (1–7) possess desirable properties for photovoltaic application. Amorphous tetrahedral semiconductors ordinarily possess a very large density of states which act as traps leading to low values for drift mobility and low recombination lifetimes of free carriers.
A. Madan, S. R. Ovshinsky
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Hard magnetic bulk amorphous alloys

IEEE Transactions on Magnetics, 1997
An amorphous phase in Ln-Fe-Al (Ln=Nd and Pr) systems is formed in wide composition ranges of 0 to 90 at% Fe and 0 to 93 at% Al by melt spinning. Ferromagnetic Ln/sub 90-x/Fe/sub x/Al/sub 10/ bulk amorphous alloys with high coercive force (/sub i/H/sub c/) at room temperature are obtained by copper mold casting.
A. Inoue, null Tao Zhang, A. Takeuchi
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Superconductivity in amorphous actinide alloys

Physical Review B, 1985
Superconductivity has been studied in amorphous binary alloys of actinides containing Co, Fe, and Ni. Amorphous thorium alloys have critical temperatures of up to 3.8 K and electronic properties similar to other transition-metal amorphous alloys. By contrast, amorphous uranium alloys have critical temperatures below 1.0 K and exhibit two unusual ...
, Poon, , Drehman, , Wong, , Clegg
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Bulk Amorphous Alloys

2001
This chapter aims to review our recent research results on new bulk amorphous alloys. The main topics are the following: (1) the finding of new amorphous alloys with high glass-forming ability in a number of alloy systems; (2) the mechanism for achieving high glass-forming ability; (3) the fundamental properties of the new amorphous alloys; (4 ...
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Ferromagnetic bulk amorphous alloys

Metallurgical and Materials Transactions A, 1998
This article reviews our recent results on the development of ferromagnetic bulk amorphous alloys prepared by casting processes. The multicomponent Fe-(Al,Ga)-(P,C,B,Si) alloys are amorphized in the bulk form with diameters up to 2 mm, and the temperature interval of the supercooled liquid region before crystallization is in the range of 50 to 67 K ...
Akihisa Inoue, Akira Takeuchi, Tao Zhang
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Amorphous Silicon Alloys

2007
The sections in this article are 1 Introduction 2 Hydrogen- and Deuterium-Related Microstructure (1H, 2D) 3 Lattice Structure (29Si, 13C) 4 Dopant Atoms (11B, 31P) 5 Biographical Sketch Related ...
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Fretting of Amorphous Alloys

MRS Proceedings, 1981
ABSTRACTAmorphous surface layers produced by bonding metglas ribbons onto steel specimens were tested for their resistance to fretting. Friction and weight loss were determined and the worn surfaces were examined optically. There was no general tendency towards a better wear resistance of the tested amorphous metals as compared to crystallized metals ...
Reinhard Becker, Gerd Sepold
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Amorphous silicon–tellurium alloys

Journal of Applied Physics, 1986
Amorphous silicon–tellurium alloy thin films were fabricated by coevaporation over the composition range of 0–82 at. % Te. The electronic and optical properties of these films were systematically investigated over this same range of composition. The optical gap of these films was found to decrease monotonically with increasing Te content.
P. K. Shufflebotham, H. C. Card, K. C. Kao, A. Thanailakis   +3 more
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