Results 131 to 140 of about 140,919 (361)

Restoration of human tooth enamel

BMEMat, EarlyView.
Human tooth enamel has remarkable properties but lacks self‐repair ability. Existing restorative materials cannot fully replicate enamel's microstructure and function, resulting in low restorative efficiency. This review summarizes the formation process and characteristics of enamel, and current restorative materials and future research directions are ...
Hanlin Liu, Bo Li, Mingrui Gao, Yangbei Li, Xiuyi Yang, Fengshi Li, Zhi Cai, Yi Liu, Shaojia Liu, Hewei Zhao, Lin Guo   +10 more
wiley   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Influence of RF Power on Structural and Corrosion Properties of Sputter‐Deposited CrN Films

Microscopy Research and Technique, EarlyView.
Three‐dimensional AFM images of CrN/304SS films synthesized at varying RF power levels. Height distribution and the curves of the bearing area of CrN/304SS films synthesized at varying RF power levels. ABSTRACT This study examines the deposition of chromium nitride (CrN) films on 304 stainless steel (304SS) substrates using radio‐frequency (RF ...
Alireza Grayeli, Sahar Rezaee, Ştefan Ţălu   +2 more
wiley   +1 more source

Rare‐Earth‐Free Iron‐Based Permanent Magnets: Progress, Challenges, and Perspectives

MetalMat, EarlyView.
Rare‐earth (RE)‐free iron‐based permanent magnets have gained attention as inexpensive, environmentally friendly alternatives to conventional RE‐based magnets. This review focuses on emerging Fe‐based hard magnets, discussing the fundamental principles governing their permanent magnetism and various examples of Fe‐based systems with emphasis on their ...
Sunbeom Park, Ji Kwon Bae, Sung Hyuk Park, Hee Ryeong Kwon, Ho Won Jang   +4 more
wiley   +1 more source

Machine learning‐based research of new refractory high‐entropy alloys using guided multiobjectives search strategy

Materials Genome Engineering Advances, EarlyView.
This study introduces an integrated machine learning framework combining predictive models, a guided multiobjective search strategy, and particle swarm optimization (PSO) to discover novel refractory high‐entropy alloys with exceptional yield strengths (1580–1740 MPa) and fracture strains (23%–27%), overcoming challenges of vast composition spaces and ...
Gang Xu, Gang Niu, YongWei Wang, Qianxi He, Hongfei Liu, HuiBin Wu, Jinwu Xu   +6 more
wiley   +1 more source

Comparative Insights Into the Structural, Electronic, Elastic, Vibrational, and Optical Properties of Rare‐Earth Palladium Borides RBPd3 (R = Lu, Yb)

Nano Select, EarlyView.
This study focuses on the ground‐state properties of two rare earth palladium borides, LuBPd3 and YbBPd3. The WIEN2k package is used to investigate the properties. The compounds’ exceptional thermal and optoelectronic properties make them suitable for high‐temperature applications, UV absorbers, and infrared (IR) shielding materials.
Md. Injamamul Haque, Arpon Chakraborty, Mst. Halima Khatun, Md. Samiul Islam Sarker, M. Khalilur Rahman Khan, Md. Leaket Ali, Md. Shahjahan, Md. Nurul Huda Liton   +7 more
wiley   +1 more source

Mechanical Behavior and Failure Analysis of Prosthetic Retaining Screws after Long‐Term Use In Vivo. Part 2: Metallurgical and Microhardness Analysis [PDF]

, 2007
Purpose: This study involved testing and analyzing multiple retrieved prosthetic retaining screws after long‐term use in vivo to: (1) detect manufacturing defects that could affect in‐service behavior; (2) characterize the microstructure and alloy ...
Al Jabbari, Youssef S., Fournelle, Raymond, Iacopino, Anthony, Toth, Jeffrey M., Ziebert, Gerald J.   +4 more
core   +1 more source

Exploring the Physical Properties of Novel Inorganic Perovskite AMgBr3 (A = Ga, Na, Tl)

Nano Select, EarlyView.
The band gap values of AMgBr3 (A = Na, Ga, and Tl) perovskites were calculated using various exchange‐correlation functionals such as generalized gradient approximation (GGA)‐Perdew–Burke–Ernzerhof (PBE), GGA‐PBEsol, GGA‐WC, Hybrid HSE06, and Tran–Blaha modified Becke–Johnson (TB‐mBJ) methods.
Md. Bayjid Hossain Parosh, Md Saiduzzaman, Nusrat Jahan Nisha, Md. Rabbi Talukder, Mst. A. Khatun   +4 more
wiley   +1 more source

Indentation Size Effect on the Hardness of Silicon Carbide Ceramics [PDF]

Kemija u Industriji, 2010
The Vickers hardness of CVD SiC ceramics is determined as a function of the indentation load. Vickers hardness pyramid-shaped sharp diamond indenter with angle between opposite faces at an angle of 136° was used to apply five indentation loads of 4.91; 9.
.Grilec, K:, Rede, V., Ćurković, L.
doaj  

Dry sliding friction and wear response of WC-Co hardmetal pairs in linearly reciprocating and rotating contact [PDF]

, 2011
This paper presents an experimental evaluation of friction and wear properties of WC-Co cemented carbides. A comparison is made between unlubricated rotating and linearly reciprocating pin-onplate sliding pairs. The plate specimens were WC-10wt%Co grades
Bonny, Koenraad, De Baets, Patrick, Lauwers, Bert, Malek, Olivier, Neis, Patric Daniel, Perez Delgado, Yeczain, Rodriguez Fereira, Vanessa, Vleugels, Jef   +7 more
core   +1 more source