Results 21 to 30 of about 58,135 (312)

Effect of 1 wt% LiF additive on the densification of nanocrystalline Y2O3 ceramics by spark plasma sintering [PDF]

open access: yes, 2011
Densification of nanocrystalline cubic yttria (nc-Y2O3) powder, with 18 nm crystal size and 1 wt% LiF as a sintering additive was investigated. Specimens were fabricated by spark plasma sintering at 100 MPa, within the temperature range of 700–1500 °C ...
Estournès, Claude   +7 more
core   +1 more source

Crystallization and electrochemical corrosion behaviors of nanometer amorphous Ni-P alloys

open access: yesMaterials Research Express, 2020
Ni-P alloy coatings with a phosphorus content of 11.65 wt% were deposited by electroless plating. The as-plated nano-amorphous Ni-P alloy coatings were heated in air for 1 h at 200–500 °C.
Zhizhen Li   +3 more
doaj   +1 more source

Corrosion Behavior of Amorphous-Nanocrystalline Ni50Ti50 Shape Memory Alloy [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
In the present study, the corrosion behaviors of amorphous-nanocrystalline Ni50Ti50 shape memory alloy with different crystallite sizes were investigated. The Ni50Ti50 homogenized specimens were hot rolled and annealed at 950°C.
H. Aghabeygzadeh   +2 more
doaj   +1 more source

Progress on the preparation of nanocrystalline apatites and surface characterization: Overview of fundamental and applied aspects [PDF]

open access: yes, 2013
Nanocrystalline calcium phosphate apatites constitute the main inorganic part of hard tissues, and a growing focus is devoted to prepare synthetic analogs, so-called “biomimetic”, able to precisely mimic the morphological and physico-chemical features of
Iafisco, Michele   +5 more
core   +1 more source

Review of thermo‐kinetic correlation during grain growth in nanocrystalline materials

open access: yesInternational Journal of Ceramic Engineering & Science, 2020
Nanocrystalline (NC) materials exhibit many unique properties over their coarse‐grained counterparts due to the high grain boundary density and the small grain size, but they are too difficult to be used in engineering environment because of the poor ...
Haoran Peng, Zengyun Jian, Feng Liu
doaj   +1 more source

High Strength and Deformation Mechanisms of Al0.3CoCrFeNi High-Entropy Alloy Thin Films Fabricated by Magnetron Sputtering

open access: yesEntropy, 2019
Recently, high-entropy alloy thin films (HEATFs) with nanocrystalline structures and high hardness were developed by magnetron sputtering technique and have exciting potential to make small structure devices and precision instruments with sizes ranging ...
Wei-Bing Liao   +6 more
doaj   +1 more source

Densification and preservation of ceramic nanocrystalline character by spark plasma sintering [PDF]

open access: yes, 2012
Spark plasma sintering is a hot pressing technique where rapid heating by dc electric pulses is used simultaneously with applied pressure. Thus, spark plasma sintering is highly suitable for rapid densification of ceramic nanoparticles and preservation ...
Estournès, Claude   +7 more
core   +1 more source

A brief overview on grain growth of bulk electrodeposited nanocrystalline nickel and nickel-iron alloys

open access: yesReviews on Advanced Materials Science, 2019
This review focuses on grain growth behaviors and the underlying mechanisms of bulk electrodeposited nanocrystalline nickel and nickel-iron alloys. Effects of some important factors on grain growth are described.
Ni Haitao   +5 more
doaj   +1 more source

Isotropic magnetization response of electrodeposited nanocrystalline Ni–W alloy nanowire arrays [PDF]

open access: yes, 2014
Isotropic magnetization response was demonstrated in electrodeposited nanocrystalline Ni–15 % W alloy nanowire arrays, which can be applied to nanoscale magnetic field sensors.
Tanaka, Yoshitomo   +2 more
core   +1 more source

Dynamic structure evolution and failure mechanism of nanocrystalline AlCo-CrFeNi

open access: yesCailiao gongcheng
The molecular dynamics method was used to simulate the microstructure dynamic evolution, dislocation, and pore motion characteristics of AlCoCrFeNi high-entropy alloy at temperature 300 K and strain rate of 1×109 s-1, and the failure mechanism was ...
ZHANG Rong, QI Wenjun
doaj   +1 more source

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