Results 81 to 90 of about 7,614 (217)

Demonstration of a diamond anvil cell platform at the Linac Coherent Light Source: capabilities and outlook

Journal of Synchrotron Radiation, Volume 33, Issue 3, Page 552-561, May 2026.
A setup for fielding high‐pressure samples contained in diamond anvil cells (DACs) at the LCLS X‐ray free electron laser is described and example powder X‐ray diffraction data are presented. Future prospects for experimental capabilities in DACs enabled by the LCLS, such as short pulse laser interactions and multiple pulse modes, are discussed.A novel ...
Mungo Frost, Nina Boiadjieva, Minkyung Han, Quynh L. Nguyen, Mengnan Wang, Hannah Bartels, Eric Galtier, Shao Xian Lee, Hemamala I. Karunadasa, Gilliss Dyer, Siegfried H. Glenzer, Wendy L. Mao, Yu Lin, Hae Ja Lee   +13 more
wiley   +1 more source

Photoluminescence of hexagonal boron nitride: effect of surface oxidation under UV-laser irradiation

, 2008
We report on the UV laser induced fluorescence of hexagonal boron nitride (h-BN) following nanosecond laser irradiation of the surface under vacuum and in different environments of nitrogen gas and ambient air.
Andrei V. Kanaev, Arnaud, Berzina, Blase, Brown, Bäuerle, Carlisle, Carson, Chen, Chen, Davies, Demetrios Anglos, Era, Furthmüller, Geick, Grinyaev, Hirayama, Hoffman, Jean-Pierre Michel, Jean-Pierre Petitet, Jia, Kanaev, Katzir, Kawaguchiaki, Larach, Larach, Leapman, Leapman, Li, Liu, Lopatin, Luc Museur, Lukomskii, MacNaughton, Mansour, Mshima, Solozhenko, Tarrio, Taylor, Watanabe, Watanabe, Wu, Xu, Yao, Yao, Zunger   +45 more
core   +1 more source

Effect of Composition on Grain‐Boundary Chemistry and Fracture Behavior in High‐Entropy Carbides

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
ABSTRACT High‐entropy carbides (HECs) are often treated as a single material class defined by configurational entropy; however, their properties are governed by composition‐specific defects and grain‐boundary chemistry. This study demonstrates that substituting a single element can qualitatively change grain‐boundary structure and fracture behavior in ...
Caleb Schenck, Marium Mostafiz Mou, Elizabeth Pritchett, Fu‐Yun Tsai, Josephine Hartmann, Michael Lastovich, Sam Daigle, Kayla Yano, Matthew J. Olszta, Sanjit Bhowick, Elizabeth Kautz, Gregory E. Hilmas, William G. Fahrenholtz, Donald W. Brenner, Bharat Gwalani   +14 more
wiley   +1 more source

Effects of the ratio of binder and the ratio of cBN particle size on the microstructure and properties of PcBN composites

Jin'gangshi yu moliao moju gongcheng
Polycrystalline cubic boron nitride composites were prepared under high-temperature and high-pressure conditions. The effects of bonding agent ratio and cBN particle size on the composition, microstructure, microhardness, and abrasive ratios of the PcBN ...
Qin ZOU, Peihang DONG, Yanguo LI, Zhenxiong YUAN, Di WU, Yongan LUO   +5 more
doaj   +1 more source

Charge states and distribution of iron ions in polycrystalline cubic boron nitride

Optical Materials, 2003
Abstract The local electronic states and distribution of 57 Fe ions in cubic boron nitride (c-BN) polycrystals as a function of technological processing were investigated. The study has been performed on c-BN samples prepared by catalytic synthesis and by direct phase transformation.
Fedotova, J. A., Fedotov, A. K., Shishonok, N. A., Stanek, Jan   +3 more
openaire   +2 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, Volume 28, Issue 8, 22 April 2026.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Study on Surface Roughness of Gcr15 Machined by Micro-Texture PCBN Tools

Machines, 2018
This paper applies micro textures to the rake face of PCBN (Polycrystalline Cubic Boron Nitride) tools, including three types of micro textures that are microgroove textures vertical to the cutting edge, microgroove textures parallel to the cutting edge,
Chen Pan, Qinghua Li, Kaixing Hu, Yuxin Jiao, Yumei Song   +4 more
doaj   +1 more source

Contact stresses on the rake face of cutting tools with PCBN in turning of hardened steel [PDF]

Журнал інженерних наук, 2017
The paper presents the results of experimental study of determination of the geometric parameters of the contact zone of the chips with the rake face of cutting tools, as well as the shrinkage of chips during the final turning of hardened HVG steel by ...
S. A. Klimenko, S. An. Klimenko, A. S. Manokhin, Yu. A. Mel’nichuk, M. Yu. Kopіeikina, A. A. Chumak   +5 more
doaj  

Effect of binder content on microstructure and mechanical properties of PcBN composites [PDF]

Processing and Application of Ceramics
In this study, polycrystalline cubic boron nitride (PcBN) composites were successfully prepared under ultrahigh pressure (5.5GPa) and high temperature (1500 °C) by using cBN as precursor and TiC, Ti and Al as binders.
Mo Peicheng, Yu Wenlin, Cheng Jiarong, Sun Yuan, Wang Peixun, Li Huixia, Yang Yufu, Cheng Chao   +7 more
doaj   +1 more source

Effect of two-step pretreatment on cobalt contents and surface roughness of tungsten carbide substrate prior to diamond coating [PDF]

, 2010
Cemented tungsten carbide is the most widely used material for cutting tools. Due to extreme demands higher tool life several types of coating have been introduced to prolong the service time which include diamond coating.
Safari, Habiballah
core