Results 71 to 80 of about 2,359,243 (314)

Photoinduced Interfacial Electronic Modulation in Fe2O3‐BiVO4 Heterostructures for Enhanced Photo‐Assisted Zn‐Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Light irradiation activates the Fe2O3‐BiVO4 heterostructure, enabling efficient solar‐electrochemical coupling in zinc‐air batteries. The built‐in electric field drives directional charge separation, guiding photoelectrons toward oxygen reduction sites and accumulating holes for oxygen evolution, thereby reducing polarization and enhancing discharge ...
Yili Liu   +7 more
wiley   +1 more source

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa   +3 more
wiley   +1 more source

Burn threshold prediction for high efficiency deep grinding [PDF]

open access: yes, 2006
Burn threshold diagrams are useful for the prediction of thermally induced grinding damage and were originally developed to describe the conventional shallow cut grinding regime.
A. Bell   +5 more
core   +1 more source

Preparation of edge-hole co-distributed brazed diamond microstructure end-grinding wheel and its grinding performance on alumina ceramics

open access: yesJin'gangshi yu moliao moju gongcheng, 2020
Due to the easy graphitization of diamond during high temperature brazing and the limitation of brazing process, it is still difficult to prepare brazed diamond grinding wheels with finer particle size.
LIN Zhibing   +5 more
doaj  

Physical Modeling of Grinding Forces

open access: yes, 2023
AbstractIn order to address the increasing demands on precision in manufacturing, the prediction of various processes by model-based methods is increasingly becoming a key technology. With respect to this, the grinding process still reveals a lot of potential in terms of reliable predictions.
F. Kästner, K. M. de Payrebrune
openaire   +1 more source

Study of Forces During Ultrasonic Vibration Assisted Grinding

open access: yes, 2016
Radial and tangential grinding forces were presented as four components connected with workpiece material microcutting and plastic deformation, and friction of cutting and abrasive grains (AGs) with the workpiece.
A. Unyanin, A. Khusainov
semanticscholar   +1 more source

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

open access: yesAdvanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon   +7 more
wiley   +1 more source

Emergence of a Hexagonal Fe2S2 Single Layer Without a Bulk Counterpart via Phase Transformation

open access: yesAdvanced Functional Materials, EarlyView.
Upon annealing, single‐layer Mackinawite iron sulfide transforms into a previously unknown hexagonal Fe2S2${\rm Fe}_2{\rm S}_2$ phase with β$\beta$‐CuI structure. STM, LEED, and first‐principles calculations identify the structure and show that electronic correlations and magnetic order are important for its stability.
Affan Safeer   +10 more
wiley   +1 more source

Shear-Mode Grinding Based on The Constant Grinding Force.

open access: yesJournal of the Japan Society for Precision Engineering, 1997
In the shear-mode grinding of brittle materials, the performance of grinding wheels is often described as the grinding force, which usually changes during the process. However, it was ascertained that a steady constant grinding force exists under shear-mode grinding of optical glass of BK7.
Imai, Kenichiro, Hashimoto, Hiroshi
openaire   +2 more sources

Turning Nd‐Fe‐B Swarf Into High‐Value Bulk Feedstocks via Sustainable Hydrogen Plasma: From Rare‐Earth Oxides to Metals and Hydrides

open access: yesAdvanced Materials, EarlyView.
Oxidized Nd‐Fe‐B magnet swarf is transformed into valuable bulk feedstock through a single‐step hydrogen plasma process. The reaction converts complex rare‐earth‐containing waste into separated metallic, oxide, and hydride fractions without acid leaching.
Naritai Chimed   +9 more
wiley   +1 more source

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