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pro vyhledávání: '"Helmut Mehrer"'
Autor:
Helmut Mehrer
Publikováno v:
Defect and Diffusion Forum. 413:109-124
We remind the reader to some common features of metallic and oxide glasses. We then introduce the radiotracer method for diffusion studies, which can be applied for both types of glasses. We provide an overview on diffusion in metallic glasses in whi
Autor:
Helmut Mehrer, Graeme E. Murch
Publikováno v:
Diffusion Foundations. 29:1-30
In this paper, a brief history of the contributions of many of the major researchers in the field of solid state diffusion is presented starting from 1829 up to the present day. People who are still making significant contributions to the field are m
Autor:
Helmut Mehrer
Publikováno v:
Diffusion Foundations. 17:1-28
Elemental semiconductors play an important role in high-technology equipment used in industry and everyday life. The first transistors were made in the 1950ies of germanium. Later silicon took over because its electronic band-gap is larger. Nowadays,
Autor:
Helmut Mehrer
Publikováno v:
Diffusion Foundations. 9:42-57
In this Chapter, we review knowledge about diffusion in quasi-crystalline alloys (quasicrystals). In Section 1 we first remind the reader of some major aspects of the quasi-crystalline state and in Section 2 we introduce phase diagrams with quasi-cry
Autor:
Hans-Rainer Trebin, Uwe Eβmann, Helmut Mehrer, Helmut Kronmüller, K. Maier, Werner Frank, Knut Urban, Haël Mughrabi
Publikováno v:
physica status solidi (b). 253:416-418
Autor:
Helmut Mehrer
Publikováno v:
Diffusion Foundations. 1:125-151
Firstly, this paper reminds the reader of some basic facts about the glassy state, then of the various ways to produce amorphous metals with particular emphasis on the route of vitrification from the melt. Vitrification of an undercooled melt is the