Results 211 to 220 of about 9,993 (282)

Silicon allotropes by large‐volume high‐pressure techniques: crystal growth mechanisms, phase diagrams and hexagonal nanostructured Si‐6H by in situ X‐ray diffraction and computational methods

Acta Crystallographica Section B, Volume 82, Issue 3, Page 280-298, June 2026.
In situ X‐ray diffraction is used for exploring Si crystallography and for studying phase‐transformation mechanisms in elemental Si and Na–Si systems. We present original results of hexagonal silicon, Si‐6H and a critical analysis of the past‐decade discoveries of silicon Si‐4H and Si24 using large‐volume high‐pressure techniques.Metastable allotropes ...
Alexandre Courac, Yann Le Godec
wiley   +1 more source

Improving the Fracture Toughness of Boron Carbide via Minor Additions of SiC and TiB₂ Through Hot-Press Sintering. [PDF]

Materials (Basel)
Ka J, Kim KH, Choi W, Jung S, Lee TH, Kim HS, Lee H, Lee JH.   +7 more
europepmc   +1 more source

Mechanical and Dielectric Properties of Porous Slip Cast Silicon Nitride Using Ytterbium Oxide Sintering Aids

International Journal of Applied Ceramic Technology, Volume 23, Issue 3, June 2026.
Silicon nitride samples were slip cast using ytterbium oxide sintering aids to fabricate porous materials for radar frequency windows. Varying sintering temperature and ytterbium oxide content were used to tailor microstructure and phase composition. Flexural strength was measured at room temperature and 1000°C.
Averyonna R. Kimery, Matthew A. Thompson, Collin C. McClain, Keith S. Caruso, Carlos J. Martinez, Rodney W. Trice   +5 more
wiley   +1 more source

Machining Simulation of Recrystallized SiC: Failure Mechanisms, Numerical Influences, Tool Dynamics, and Friction Behavior

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
ABSTRACT This paper presents a comprehensive study on the machining simulation of recrystallized silicon carbide (R‐SiC), with a focus on material failure mechanisms, numerical influences, tool kinematics, and frictional behavior. A representative volume of interest was derived from CT data, and a meshing algorithm for CT‐based structures was ...
Simon Unseld, Stefan Kleiner, Achim Rösiger, Ralf Goller, Dietmar Koch   +4 more
wiley   +1 more source

Evaluation of tribological parameters for boron carbide and graphite infused aluminium hybrid composite fabricated by stir casting technique. [PDF]

Sci Rep
Thakur A, Murtaza Q, Ahmed J, Choon Kit C, Prakash C, Khanna V, Jasrotia R, Sillanpää M, Ramya M, Liu LWY.   +9 more
europepmc   +1 more source

Characterization of Gel Layers Formed on Alkali‐Modified Aluminoborate Glasses During Aqueous Corrosion

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
ABSTRACT The nature of gel formation on borate glasses during dissolution remains relatively unexplored, despite relevance to bioactive glass applications. In this work, we investigate gel‐layer formation on sodium‐ and potassium‐ modified aluminoborate glasses after dissolution in deionized water.
Jessica J. Sly, John C. Mauro
wiley   +1 more source

Effect of Sintering Aid Composition and Porosity on the Oxyacetylene Torch Response of Silicon Nitride for RF Windows

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
Silicon nitride samples were slip cast using yttrium oxide–aluminum oxide and ytterbium oxide sintering aids to fabricate plates with up to 40% porosity and compare them to a fully dense commercial standard. Silicon nitride plates were tested with an oxyacetylene torch to investigate changes in front and back face temperature, spectral emissivity ...
Matthew A. Thompson, Rodney W. Trice
wiley   +1 more source

Author Correction: Evaluation of tribological parameters for boron carbide and graphite infused aluminium hybrid composite fabricated by stir casting technique. [PDF]

Sci Rep
Thakur A, Murtaza Q, Ahmed J, Choon Kit C, Prakash C, Khanna V, Jasrotia R, Sillanpää M, Ramya M, Liu LWY.   +9 more
europepmc   +1 more source

Surface‐Localized Intrinsic Toughening of Glass With Preserved Transparency by Ni Nanoparticle Precipitation

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
Nanosized Ni nanoparticles were selectively precipitated near the surface of borosilicate glass to achieve intrinsic toughening without loss of transparency. This surface‐confined nanoparticle layer effectively suppresses crack initiation and improves fracture toughness, even for indentation depths exceeding the modified layer thickness.
Hiroki Yamada, Naoki Motegi, Takuya Fujima, Satoshi Ichikawa, Kenji Shinozaki   +4 more
wiley   +1 more source

Grain Growth Kinetics and Polytype Transformation of SiC During the Intermediate Stage of Induction Heating Sintering

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
ABSTRACT Grain growth kinetics and polytype transformation play a critical role in determining the final microstructure and properties of SiC ceramics, particularly during the intermediate stage of sintering when the microstructure evolves most significantly.
Alin Yoshida, Anna Gubarevich, Katsumi Yoshida   +2 more
wiley   +1 more source