scholarly journals Residual Stresses of Plasma Sprayed ZrC-Based Coatings during Path-by-path and Layer-by-layer Deposition: Simulation and Experimental Verification

2019 ◽  
Vol 34 (7) ◽  
pp. 768 ◽  
Author(s):  
Ling-Ling XIE ◽  
Ya-Ran NIU ◽  
Liang WANG ◽  
Wen-Liang CHEN ◽  
Xue-Bin ZHENG ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Experimental Verification ◽  
Layer By Layer ◽  
Layer Deposition ◽  
Plasma Sprayed ◽  
Deposition Simulation

Modeling residual stresses generated in Ti coatings thermally sprayed on Al2O3 substrates

2013 ◽  
Vol 61 (2) ◽  
pp. 515-525 ◽  
Author(s):  
J. Zimmerman ◽  
Z. Lindemann ◽  
D. Golański ◽  
T. Chmielewski ◽  
W. Włosiński
Keyword(s):  
Residual Stresses ◽  
Ambient Temperature ◽  
Mechanical Analysis ◽  
Layer By Layer ◽  
Titanium Coating ◽  
Layer Deposition ◽  
Detonation Method ◽  
The Individual ◽  
Two Stages ◽  
Thermally Sprayed

Abstract There is described a method of modeling by the finite element method the residual stresses induced during thermal deposition of coatings. The simulation was performed in two stages. The first dynamic stage simulated the impacts of the individual particles of the coating material onto the substrate, and the next static stage included a non-linear thermo-mechanical analysis intended for simulating the process of layer-by-layer deposition of the coating, with a specified thickness, and then cooling the entire system to the ambient temperature. In the computations, the samples were assumed to be cylindrical in shape and composed of an Al2O3 substrate and a titanium coating (with three different thicknesses) deposited using the detonation method. The correctness of the numerical model was verified experimentally by measuring the deflections of a real Ti coating/Al2O3 substrate sample with the Ti coating detonation-sprayed on the ceramic substrate, after cooling it to the ambient temperature. The experimental results appeared to be in good agreement with those obtained by the numerical computations.

Investigation of Influence of Plasma Spraying Process Parameters on the Level of Residual Stresses

2020 ◽  
Vol 864 ◽  
pp. 198-203
Author(s):  
Igor N. Kravchenko ◽  
Yurii A. Kuznetsov ◽  
Vladimir V. Goncharenko ◽  
Larisa V. Kalashnikova
Keyword(s):  
Residual Stresses ◽  
Plasma Spraying ◽  
Moving Boundary ◽  
Layer By Layer ◽  
Coating Materials ◽  
Thermal Fields ◽  
Layer Deposition ◽  
Nonlinear Feature ◽  
Plasma Spraying Process ◽  
Spraying Process

The method to determine thermal fields considering dependence of thermophysical and mechanical properties of coating materials and a base from the temperature, the running of plastic deformations and stresses relaxation at plasma spraying is suggested. The mathematical model of calculation of thermal field with moving boundary considering nonlinear feature of coating growth at layer-by-layer deposition and dependences from thermophysical properties of materials of the system «coating-base» is developed. The model application helps to estimate the effect of the parameters of plasma spraying process on the level of the residual stresses in the increased coatings.

Radical-triggered cross-linking for molecular layer deposition of SiAlCOH hybrid thin films

2021 ◽  
Author(s):  
Kristina Ashurbekova ◽  
Karina Ashurbekova ◽  
Iva Saric ◽  
Evgeny Modin ◽  
Mladen Petravic ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Growth ◽  
Molecular Layer ◽  
Thin Film Growth ◽  
Cross Linking ◽  
Layer By Layer ◽  
Molecular Layer Deposition ◽  
Layer Deposition ◽  
Hybrid Thin Films ◽  
Enhanced Stability

We developed a thin film growth with a radical-initiated cross-linking of vinyl groups in a layer-by-layer manner via molecular layer deposition (MLD). The cross-linked film exhibited improved properties like 12% higher density and enhanced stability compared to the non-cross-linked film.

All-nanoparticle layer-by-layer coatings for Mid-IR on-chip gas sensing

2020 ◽  
Vol 56 (91) ◽  
pp. 14283-14286
Author(s):  
Diana Al Husseini ◽  
Junchao Zhou ◽  
Daniel Willhelm ◽  
Trevor Hastings ◽  
Gregory S. Day ◽  
...  
Keyword(s):  
Optical Waveguides ◽  
Gas Sensing ◽  
Layer By Layer ◽  
Precise Control ◽  
Nanoparticle Layer ◽  
Withdrawal Speed ◽  
Layer Deposition ◽  
Nanoparticle Coatings ◽  
On Chip

Functionalization of optical waveguides with submicron all-nanoparticle coatings significantly enhanced the detection of acetone. Such coatings were enabled via precise control of the substrate withdrawal speed using the layer-by-layer deposition.

Layer-by-Layer Deposition of Polyelectrolytes. Dipping versus Spraying

Langmuir ◽  
2009 ◽  
Vol 25 (2) ◽  
pp. 1224-1232 ◽  
Author(s):  
Marta Kolasinska ◽  
Rumen Krastev ◽  
Thomas Gutberlet ◽  
Piotr Warszynski
Keyword(s):  
Layer By Layer ◽  
Layer Deposition
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