Landolt-Börnstein - Group VIII Advanced Materials and Technologies

14 Intermetallic materials

Abstract

Intermetallics is the short and summarising designation for the intermetallic phases and compounds which result from the combination of two or more metals and the crystal structures of which are different from those of the constituents. Recently intermetallics have found an increasing interest in materials science and technology with respect to use as magnets and for applications at high temperatures. It is expected that a new class of high temperature structural materials is developed on the basis of intermetallics. It should be noted that intermetallics with particular physical properties have given rise to developments of new functional materials much earlier. The brittle nature of most intermetallics requires powder metallurgical processing. Some applications of intermetallics in the past and present, and intermetallic materials which are applied or ready for application are tabulated in the chapter. The outstanding mechanical properties of intermetallic phases - in particular their high strength besides oxidation resistance at high temperatures - resulted in promising intermetallic materials developments only in the recent past because the low ductility and toughness of most intermetallic phases at low temperatures makes processing and design of components difficult. A variety of powder metallurgical techniques are used successfully to produce intermetallic phases and composites. The chapter lists powder metallurgy processes and examples of materials processed.

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Title
14 Intermetallic materials
Book Title
Powder Metallurgy Data. Refractory, Hard and Intermetallic Materials
Book DOI
10.1007/b83029
Chapter DOI
10.1007/10858641_17
Part of
Landolt-Börnstein - Group VIII Advanced Materials and Technologies
Volume
2A2
Editors
  • P. Beiss
  • R. Ruthardt
  • H. Warlimont
  • Authors
  • G. Sauthoff
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