Essays about: "Root Shielding"

Found 2 essays containing the words Root Shielding.

1. 1. Researching and Developing Universal Gas Purging Solutions

   University essay from KTH/Maskinkonstruktion (Avd.)

   Author : Ludvig Briheim; Dennis Ståhl; [2020]
   Keywords : Gas Purging Plug; Pipe Purging; Root Shielding; Shielding Gas; Pipe Welding; Rotgasplugg; Rotgasskydd; Skyddsgas; Rörsvetsning; Rörrengöring;

   Abstract : In the welding of more sensitive metals such as stainless steel, titanium and some specific nickel alloys, the presence and application of a protective gas is essential. Without the use of a nonreactive shielding gas, defects occur in or adjacent to the weld joint, which vary from light discoloration of the weld bead to the direct onset and propagation of cracks. READ MORE

3. 2. Offline study of next generation EUV pellicle materials and performances : From experimental design to material characterization

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Susanna Licheri; [2019]
   Keywords : Semiconductors; Nanotechnology; EUV Lithography; EUV Pellicle; Qualification study; Halvledare; nanoteknik; EUV litografi; EUV Pellicle; kvalificerings studie;

   Abstract : Lithography is the most crucial step in the semiconductor microfabrication workflow. Continuous features size shrinking co-occurs with the reduction of the exposure wavelength: a move from 193 nm light to extreme ultra-violet (EUV) at 13.5 nm is performed. The change poses a vast number of challenges that have been overcome in the past years. READ MORE