Essays about: "crack-free"

Found 5 essays containing the word crack-free.

1. 1. Development of thick GaN and AlGaN drift layers for vertical power devices

   University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Author : Andri Dhora; [2023]
   Keywords : Technology and Engineering;

   Abstract : High-quality, thick III-nitride epitaxial drift layers with controlled doping are needed for next-generation highly efficient vertical power devices for a smart grid applications and electrification of mobility. Achieving desirable material properties, such as low background impurity concentrations and reduced dislocation densities in combination with high growth rates, necessary for practical application present a challenge. READ MORE

3. 2. Graphene-based Crack-Free Ceramic Coatings for High-Performance Passive RF Devices

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

   Author : Haomin Liu; [2021]
   Keywords : ;

   Abstract : Dielectric resonators coated with highly conductive metallic layers are widely used in radio frequency (RF) applications. The quality factor (Q-factor) of resonators is a key figure-of-merit that describes the loss and the energy efficiency of the resonators. READ MORE

4. 3. Experimental Design for Ceramic Panel Production

   University essay from Luleå tekniska universitet/Materialvetenskap

   Author : Arailym Umirova; [2021]
   Keywords : ceramic; panels; crack-free; expancel; gel-casting;

   Abstract : This thesis work is a continuation of a project aimed at the consolidation of insulation material (IM) to produce porous ceramics with sufficient porosity and compression strength for post-insulation of buildings. The porous structure and contact points are tailored to produce IM with ultra-low thermal conductivity. READ MORE

5. 4. Fabrication of a light-weight SOFC using ceramic fibre paper as substrate

   University essay from Lunds universitet/Centrum för analys och syntes

   Author : Philip Löfkvist; [2015]
   Keywords : inorganic chemistry; solid oxide fuel cell; unmanned aerial vehicle; high temperature heat treatment; yttria stabilized zirconia; ceramic fibre paper; catator; nickel oxide; impregnation; paste manufacturing; ultra-sonication; ball-milling; optical microscopy; materials chemistry; scanning electron microscopy; materialkemi; Technology and Engineering;

   Abstract : A novel method for the fabrication of a light-weight solid oxide fuel cell (SOFC) has been evaluated at Catator. This was conducted in order to lower the weight and thus cost of an unmanned aerial vehicle. The main aim for this thesis was to achieve a thin, dense and crack-free electrolyte using a ceramic fibre paper as substrate. READ MORE

6. 5. Förekomst & kostnad av kapsprickor i stormaskadad skog

   University essay from SLU/School for Forest Management

   Author : Markus Forsberg; [2014]
   Keywords : virkesbehandling; virkesförlust; engreppsskördare; storm;

   Abstract : The aim for this study where to investigate the frequency of cutting cracks in saw timber harvested in the storm-damaged forests in regions where the storms Hilde and Ivar hit. The idea for this work came from one of the region’s biggest actors, SCA Skog and Jämtlands district. READ MORE