Essays about: "YSZ"

Found 5 essays containing the word YSZ.

1. 1. Phase field modelling of LLZO/LCO cathode-electrolyte interfaces in solid state batteries

   University essay from Uppsala universitet/Strukturkemi

   Author : Michele Riva; [2018]
   Keywords : LLZO; LCO; phase; field; phase-field; phasefield; solid; state; solid-state; solidstate; battery; batteries; sintering; model; modelling;

   Abstract : This work describes two phase field models for the simulation of the interface evolution between a LiCoO2 cathode (LCO) and a Li7La3Zr2O12 solid electrolyte (LLZO) in a Li-metal/LLZO/LCO battery during high temperature sintering. In these conditions atomic species tend to diffuse into the opposing material, creating an intermediate layer of mixed composition which resists the movement of lithium ions. READ MORE

3. 2. Measurement of Thermal Insulation properties of TBC inside the Combustion chamber

   University essay from Luleå tekniska universitet/Materialvetenskap

   Author : Siamak Kianzad; [2017]
   Keywords : Materials; TBC; Thermal barrier coating; heat flux; crack; combustion chamber; heavy duty diesel engine; single-cylinder; dummy valve; 8YSZ; YSZ; segmented cracks; radiative heat transfer; lanthanum gadolinium; EB-PVD; PVD; APS; CVD; horizontal cracks; vertical cracks; crack propagation; crack initiation;

   Abstract : This master thesis project was performed in collaboration with Scania CV AB, Engine Materials group. The purpose with the project was to investigate different ceramic TBC (Thermal Barrier Coating) thermal insulation properties inside the combustion chamber. READ MORE

4. 3. Isothermal Oxidation Study of Gd2Zr2O7/YSZ Multi-Layered Thermal Barrier Coatings

   University essay from Högskolan Väst/Avd för tillverkningsprocesser

   Author : Ran Li; [2015]
   Keywords : Multi-layered thermal barrier coating; isothermal oxidation; suspension plasma spray;

   Abstract : Conventional yttria stabilized zirconia (YSZ) are widely used in the gas turbine to protect the substrate material from high temperature. But the common YSZ top coatings have limitations at higher temperature (above 1200 ℃) due to significant phase transformation and intensified sintering effect. READ MORE

5. 4. Thermal barrier coatings for diesel engine exhaust applications

   University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Author : Christoffer Blomqvist; [2014]
   Keywords : TBC; thermal barrier coatings; APS; mullite; YSZ;

   Abstract : The strive to increase the engine efficiency in terms of fuel consumption and lower emissions have lead to higher demands on materials. In this thesis five different thermal barrier coatings applied using air plasma spraying to three materials commonly used for exhaust application are evaluated. READ MORE

6. 5. Defects in ceria

   University essay from Institutionen för fysik, kemi och biologi

   Author : Marcus Gidby; [2009]
   Keywords : ceria; cerium dioxide; frenkel defects; oxygen defects; SOFC; DFT; density functional theory; first principles calculations; LDA U; VASP;

   Abstract : The solid oxide fuel cell (SOFC) technology has been under research since thelate 1950s, and most of the research has been on designs utilizing yttria stabilized zirconia (YSZ) as the electrolyte of choice. However, the SOFC technology has the major drawback of requiring high operation temperatures (up to 1000 degrees Celcius), so research of alternative materials have come into interest that would possibly require a lower working temperature without any significant loss of conductivity. READ MORE