Results 91 to 100 of about 22,588 (315)

Failure Mechanism of EB-PVD Thermal Barrier Coatings under the Synergistic Effect of Thermal Shock and CMAS Corrosion

, 2022
Thermal barrier coatings (TBCs) suffer from the thermo-chemo-mechanical coupling action of thermal shock and calcium–magnesium–alumina–silicate (CMAS) corrosion.
Sai Liu, Zengsheng Ma, Qing Liu, Wang Zhu, Guolin Liu, Xiaopeng Hu   +5 more
core   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Cold-Sprayed Multilayer Thermal Barrier–Catalytic Coatings for Engine Pistons: Coatings Design and Properties

, 2022
Yttrium-stabilized zirconia thermal barrier coatings (TBCs) of combustion chambers and piston crowns are used most frequently to increase the chamber temperature and the internal combustion engine efficiency.
Mircea Pantea, Eugene Leshchinsky, Roman Gr. Maev, Jimi Tjong, Volf Leshchynsky   +4 more
core   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Rear Earth Oxide Multilayer Deposited by Plasma Spray-Physical Vapor Deposition for Envisaged Application as Thermal/Environmental Barrier Coating

, 2021
SiC fiber-reinforced SiC ceramic matrix composites (SiCf/SiC CMCs) are being increasingly used in the hot sections of gas turbines because of their light weight and mechanical properties at high temperatures.
Xinghua Liang, Xi Wu, Shuangquan Guo, Jie Zhong, Xiaofeng Zhang, Dongling Yang   +5 more
core   +1 more source

Fabrication and high temperature electrical conductivity of polymer-derived SiHfBCN ceramic coating

Journal of Advanced Ceramics
Wireless surface acoustic wave (SAW) sensors hold great promise for in-situ, real-time monitoring and accurately assessing the health status of hot-end components.
Xichao Dong, Qinghua Zhao, Yao Li, Shaomin Gu, Xinming Xu, Dianwei He, Fang Ye, Laifei Cheng, Xingang Luan, Zhaoju Yu   +9 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Development of Method for Applying Multilayer Gradient Thermal Protective Coatings Using Detonation Spraying

In this work, multilayer gradient coatings obtained by detonation spraying were studied. To obtain a multilayer gradient coating by detonation spraying, two modes with different numbers of shots of NiCrAlY and YSZ were developed.
Aiym Nabioldina, Nurmakhanbet Raisov, Dastan Buitkenov   +2 more
core   +1 more source

Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates

, 2014
The ceramic coatings with different thicknesses in the range of 150 mu m to 490 mu m, bonded on the same alloy substrates, were obtained by the air plasma spray method.
Li XN, Chen L, Liang, LH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China., 谢季佳, 魏悦广, 梁立红   +5 more
core   +1 more source