Powder Metallurgy of Al-Al2O3 Composites (SAP) for Nuclear Applications

An important application of the methods of powder metallurgy in the aluminum industry is the oxidation to a given degree of aluminum powder, followed by sintering of the oxidized powder obtained

D. Gualandi

2012

Key concepts

Scholarcy highlights

  • An important application of the methods of powder metallurgy in the aluminum industry is the oxidation to a given degree of aluminum powder, followed by sintering of the oxidized powder obtained
  • The paper gives the results of such work at the ISML Laboratory, which has been concerned with the achievement of a completely structurally stable material during prolonged heating through an effective degassing treatment during the processing of the material, with the attainment of better weldability as a consequence; the amelioration of the quality of the starting powder in order to obtain the maximum uniformity of the semifinished products; the development of fabrication methods, which will yield straight tubing with narrow dimensional tolerances and finned tubes with straight or helical fins, and methods of control of these tubes; the complete elimination of metallic impurities in order to achieve improved resistance to corrosion, better formability, more homogeneous behavior toward organic materials, and smaller neutron absorption; and the structure of these materials has been more clearly interpreted, quantitative measurements of the grains and interspacings between the particles of the dispersed phase are given, and a theory explaining the influence of temperature, rate of straining, etc., on the mechanical properties up to 500°C is proffered

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