Results 41 to 50 of about 3,743,850 (257)

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Characterisation of corona-generated ions used in a Neutral cluster and Air Ion Spectrometer (NAIS) [PDF]

open access: yesAtmospheric Measurement Techniques, 2011
We characterized size and chemical composition of ions generated by a corona-needle charger of a Neutral cluster and Air Ion Spectrometer (NAIS) by using a high resolution differential mobility analyzer and a time-of-flight mass spectrometer.
H. E. Manninen   +14 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Factors of air ion balance in a coniferous forest according to measurements in Hyytiälä, Finland [PDF]

open access: yesAtmospheric Chemistry and Physics, 2006
A new mathematical model describing air ion balance was developed and tested. It has improved approximations and includes dry deposition of ions onto the forest canopy. The model leads to an explicit algebraic solution of the balance equations.
H. Tammet   +4 more
doaj  

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

open access: yesAdvanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang   +6 more
wiley   +1 more source

Other title: 190th Air Refueling Wing Airmen and Their Families; Other title: One Hundred Ninetieth Air Refueling Wing Airmen and Their Families

open access: yes, 1994
application/pdfA set of 9 documents provided by the 190th Air Refueling Wing, Kansas Air National Guard, with resources and information for 190th Air Refueling Wing Airmen and Their Families.Air National Guard (2016) 190th Air Refueling Wing (2016 ...
Kansas. Air National Guard. Air Refueling Wing, 190th.
core   +1 more source

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

open access: yesAdvanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul   +5 more
wiley   +1 more source

Design of a vehicle negative ions generating circuit

open access: yes, 2012
[[abstract]]Negative ions technology has been widely used to deal with air pollution problems in recent years. In this paper, a negative ions generating circuit is designed for dealing with the exhaust gas from vehicles.
Chen, Liang‐Rui; Wu, Chia-Hsuan
core   +1 more source

Differential characterization of air ions in boreal forest of Finland and a megacity of eastern China [PDF]

open access: yes
Air ions play a crucial role in new particle formation (NPF), which in turn has the potential to influence global climate and air quality. We conducted a comparative analysis of air ions in three size ranges (0.8–2 nm cluster ions, 2–7 nm intermediate ...
W. Du   +29 more
core   +2 more sources

The Role of Ultra‐Thin Passive Films and Organic Adsorbates on Aluminum Chips for a Friction‐Induced Solid‐State Recycling Process

open access: yesAdvanced Engineering Materials, EarlyView.
Despite benefits to storage stability and handleability of aluminum scrap, octadecyl phosphonic acid (ODPA) SAMs reduce the tensile strength of wires produced using friction‐induced recycling. Etching and methyl diphosphonic acid (MDPA) coatings, however, have little effect.
Timothy D. Goller   +3 more
wiley   +1 more source

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