Results 101 to 110 of about 88,027 (290)
ntic mini-implants are used in clinical practice to provide efficient and aesthetically-pleasing anchorage. Aim: To evaluate the hardness (Vickers hardness) and chemical composition of miniimplant titanium alloys from five commercial brands.
Christiane Cavalcante Feitoza, Guilherme José Pimentel Lopes de Oliveira, Rafael Leonardo Xediek Consani, Eloisa Marcantonio Boeck, Karina Eiras Dela Coleta Pizzol, Nadia Lunardi
core
The tribological and wear properties of carbon-graphite composites
, 1994 A range of carbon-graphites with differing properties has been evaluated for wear resistance. These include carbons with a high degree of graphitic order (natural and synthetic graphite), those with little or no such order (pitch bonded cokes, glassy ...
J H Morris, Morris, Justin Howard
core
Chemical bonding, structure, and hardness of carbon nitride thin films
, 2000 Carbon nitride films are deposited on Si(001) substrates by reactive d.c. magnetron sputtering graphite in a pure N2 discharge. The chemical bonding and structure of carbon nitride films were probed using Fourier transformation infrared (FTIR) and near ...
Zheng, W.T., +7 more
core +1 more source
Advanced Engineering Materials, EarlyView.A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du +4 more
wiley +1 more source
Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing
Advanced Engineering Materials, EarlyView.The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai +6 more
wiley +1 more source
Effect of Nano-Ti N Particle on Mechanical Property of TiN-Ni Alloy Plating
Jixie chuandong, 2015 Application of chemical deposition technology,a layer of nanometer TiN-Ni alloy is coated in the planet gear shaft of automotive transmission,the tests show that the nano-TiN particle increase the hardness and the wear-resisting performance and the ...
Huai Zunke, Nan Huan, Wang Feng
doaj
Microstructural evolution of a printed AISI 303 upcycled powder on a dissimilar substrate
Journal of Materials Research and TechnologyAdditive manufacturing for new constructions or repairing purposes may deal with the use of dissimilar materials. Hence, the influence of interface between the substrate layer and printed one is crucial.
Lara Castanheira +3 more
doaj +1 more source
An Assessment of the Validity of the Maximum Hardness Principle in Chemical Reactions
, 2017 We have computationally explored the fulfillment of the Maximum Hardness Principle in chemical reactions. To this end we have selected a well-defined series of 34 exothermic chemical reactions (the so-called BH76 test) and we have calculated the hardness
Marcel Swart, Miquel Solà, Jordi Poater
core +1 more source
Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys
Advanced Engineering Materials, EarlyView.Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak +3 more
wiley +1 more source
, 2017 From the definition of a local chemical potential, well-behaved expressions for the local hardness and the dual descriptors are derived.
Paul W. Ayers +3 more
core +1 more source