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Experimental Procedure for Warm Spinning of Cast Aluminum Components
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Fabrication of thin Molybdenum backed target using rolling method.

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Researchers successfully fabricated a thin molybdenum (Mo) foil on a gold (Au) backing using indium (In) for improved adhesion. Characterization confirmed foil properties and thickness, crucial for target applications.

Keywords:
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Area of Science:

  • Materials Science
  • Nuclear Materials

Background:

  • Fabricating thin metal foils for targets requires robust adhesion between layers.
  • Molybdenum (Mo) foils are susceptible to surface oxidation and carbonization during high-temperature processing.
  • Achieving uniform and well-characterized thin foils is essential for reliable experimental results.

Purpose of the Study:

  • To develop a method for fabricating a thin natural Mo foil on a thick Au backing.
  • To investigate the use of Indium (In) as an adhesion layer between Mo and Au foils.
  • To characterize the fabricated Mo foil and the overall Mo-Au target structure.

Main Methods:

  • Mo foil fabrication via rolling at elevated temperatures.
  • Au foil fabrication using conventional rolling techniques.
  • Indium (In) evaporation to create an adhesion layer (thickness ~86 μg/cm²).
  • Surface analysis using Energy Dispersive X-ray Spectroscopy (EDS) and Scanning Electron Microscopy (SEM).
  • Thickness measurements using Energy Dispersive X-ray Fluorescence (EDXRF).

Main Results:

  • Successful fabrication of a Mo foil on an Au backing with an In interlayer.
  • EDS confirmed surface oxidation/carbonization of Mo foil when heated in air.
  • SEM and EDS were used for characterization of the thin Mo foil.
  • EDXRF measurements determined Mo foil thickness (1.3 mg/cm²) and Au backing thickness (9 mg/cm²).

Conclusions:

  • The study demonstrates a viable method for producing thin Mo foils on Au backings with enhanced adhesion.
  • Indium effectively acts as an adhesion promoter between Mo and Au layers.
  • Characterization techniques confirmed the successful fabrication and properties of the Mo-Au target.