Results 11 to 20 of about 142,570 (304)

Residual stresses in ceramic metal assembly after brazing process [PDF]

open access: yes, 2006
The framework of this study is the thermo-mechanical analysis of the brazing process of ceramic metal assemblies. The thermal expansion gradient between ceramic and metallic materials leads to the development of residual stresses during the cooling phase
B. Lorrain   +7 more
core   +1 more source

Precise Manipulation of Amino Groups in Zr-MOFs for Efficient Adsorption Performance

open access: yesCrystals, 2023
Developing high-performance adsorbents for heavy metal (Cr (VI)) removal is essential for sustainable environments, but it is still challenging. Herein, a simple solvothermal method was proposed to fabricate Zr-MOFs (UiO-66), which was innovatively ...
Qinghua Long   +6 more
doaj   +1 more source

Ce and W co-doped CaBi2Nb2O9 with enhanced piezoelectric constant and electrical resistivity at high temperature

open access: yesJournal of Materiomics, 2020
Ce and W co-doped CaBi2Nb2O9 ceramics with chemical formula Ca0.96Ce0.04Bi2Nb2-xWxO9 (CCBN-W100x, x = 0–0.07) are fabricated via conventional solid state sintering method, to investigate the effect of W addition on the structure, electrical resistivity ...
Zong-Yang Shen   +6 more
doaj   +1 more source

Ceramic materials lead to underestimated DNA quantifications : a method for reliable measurements [PDF]

open access: yes, 2010
In the context of investigating cell-material interactions or of material-guided generation of tissues, DNA quantification represents an elective method to precisely assess the number of cells attached or embedded within different substrates. Nonetheless,
Martin, I., Piccinini, E., Sadr, N.
core   +1 more source

The numerical analysis of dynamically loaded ceramic: a crack softening approach [PDF]

open access: yes, 2000
A physically based crack softening approach to modelling the failure of brittle materials that have been subjected to dynamic loading is presented and applied to a two-dimensional non-linear transient dynamic hydrocode.
Iremonger, Michael J., Hazell, Paul J.
core   +1 more source

Investigation on mechanical properties of nickel open cell metal foam after heat treatment

open access: yesScientific Reports, 2023
This investigation aims to assess the mechanical behavior and energy absorption properties of the open-cell nickel foams. The metal foams produced by electroforming of nickel on PU foams, also a heat treatment has applied to evaporate the PU foam, then a
Y. Shajari, L. Nikzad, M. Razavi
doaj   +1 more source

The performance of a porous ceramic hydrostatic journal bearing [PDF]

open access: yes, 2010
The performance of a porous-ceramic hydrostatic journal bearing manufactured by the starch consolidation (SC) technique has been examined using a highly instrumented test rig.
Corbett, John   +2 more
core   +1 more source

Processing properties and pyrolysis behavior of novolak-hexamethylenetetramine mixtures

open access: yesAdvanced Manufacturing: Polymer & Composites Science, 2023
This work investigates the influence of the hexamethylenetetramine (hexa) content on the rheological features, pyrolysis reactions, mass-loss kinetics and char yield for two phenolic resins, each with different novolak-hexa mixtures from 0 wt.-% to 15 wt.
Felix Wich   +6 more
doaj   +1 more source

Glass modified barium strontium titanate ceramics for energy storage capacitor at elevated temperatures

open access: yesJournal of Materiomics, 2019
A glass with composition of B2O3-Bi2O3-SiO2-CaO-BaO-Al2O3-ZrO2 (BBSZ) modified BaxSr1-xTiO3 (BST, x = 0.3 and 0.4) ceramics were prepared by a conventional solid state reaction method abided by a formula of BST + y%BBSZ (y = 0, 2, 4, 7, and 10, in mass).
Zong-Yang Shen   +8 more
doaj   +1 more source

Measuring the strength of brittle materials by depth-of-penetration testing [PDF]

open access: yes, 2010
Based on an energy conservation model, the strength offered by a number of brittle materials has been calculated from depth-of-penetration (DOP) test results. Each material was completely penetrated by a tungsten carbide cored projectile of known kinetic
Hazell, Paul J., P J Hazell
core   +1 more source

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