Results 31 to 40 of about 34,422 (242)

Substrate Effect on the High Temperature Oxidation Behavior of a Pt-modified Aluminide Coating. Part II: Long-term Cyclic-oxidation Tests at 1,050 C [PDF]

, 2007
This second part of a two-part study is devoted to the effect of the substrate on the long-term, cyclic-oxidation behavior at 1,050 C of RT22 industrial coating deposited on three Ni-base superalloys (CMSX-4, SCB, and IN792).
B. A. Pint, B. Gleeson, C. C. Jia, D. Oquab, Daniel Monceau, F. A. Golightly, G. Fisher, G. M. Kim, H. E. Evans, H. Hindam, H. M. Hindam, J. Angenete, J. C. Yang, J. D. Kuenzly, J. L. Smialek, J. M. N’Gandu Muamba, L. Rivoaland, M. Bobeth, M. W. Brumm, N. Vialas, Nadia Vialas, V. K. Tolpygo, Y. Zhang   +22 more
core   +3 more sources

Kerf-Less Exfoliated Thin Silicon Wafer Prepared by Nickel Electrodeposition for Solar Cells

Frontiers in Chemistry, 2019
Ultra-thin and large-area silicon wafers with a thickness in the range of 20–70 μm, were produced by spalling using a nickel stressor layer. A new equation for predicting the thickness of the spalled silicon was derived from the Suo–Hutchinson mechanical
Hyun-Seock Yang, Hyun-Seock Yang, Jiwon Kim, Seil Kim, Nu Si A. Eom, Sangmuk Kang, Chang-Soon Han, Sung Hae Kim, Donggun Lim, Jung-Ho Lee, Sung Heum Park, Jin Woo Choi, Chang-Lyoul Lee, Bongyoung Yoo, Jae-Hong Lim   +14 more
doaj   +1 more source

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

Computational model of spalling and effective fibers on toughening in fiber reinforced composites at an early stage of crack formation

Latin American Journal of Solids and Structures
This work suggests a computational model that takes account of effective fibers on toughening in FRC at an early stage of crack formation. We derived the distribution of pressure provoked by a random inclined fiber in the matrix and calculated stresses ...
Chong Wang, Leandro Ferreira Friedrich
doaj   +1 more source

Persepsi usahawan industri kecil bumiputera terhadap aspek perlaksaan strategi pemasaran : satu tinjauan di Parit Raja, Batu Pahat, Johor [PDF]

, 2001
Strategi pemasaran memainkan peranan penting untuk menentukan kejayaan atau kegagaian sesebuah pemiagaan. Lantaran itu, kajian ini bertujuan untuk mengena!
Mohamood, Maziharita
core  

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

Application of a Finite-Discrete Element Method Code for Modelling Rock Spalling in Tunnels: The Case of the Lyon-Turin Base Tunnel

Applied Sciences
Brittle failure, or spalling, occurs around openings excavated in hard rock masses with high in situ stresses. It takes place due to the nucleation and growth of cracks around the excavation boundary, induced by the redistribution of stresses following ...
Daniele Martinelli, Alessandra Insana
doaj   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source

Validation of the Pull-Back Method for Dynamic Tensile Strength Characterization in Unidirectional Reinforced Concrete

Applied Sciences
The pull-back method for determining dynamic tensile strength assumes one-dimensional stress wave propagation and material homogeneity. This study validates these assumptions for unidirectional reinforced concrete (UDRC) through experiments and numerical
Xinlu Yu, Junfeng Zhang, Junhui Gu
doaj   +1 more source