Results 61 to 70 of about 5,947,585 (288)
Surface Hardness and Fourier Transform Infrared Spectroscopical Characterization of Bioactive Modified Chairside Hard Denture Reliner [PDF]
Al-Rafidain Dental JournalAims: The study seeks to investigate the hardness and chemical structure of the MWCNTs-Nanonystatin-modified hard chairside denture reliner after nanosizing nystatin macromolecules to be conjugated with MWCNTs for loading into chairside hard denture ...
Rana R. Aziz, Mohammed M. Sadoon
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Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Approximation hardness of dominating set problems in bounded degree graphs [PDF]
, 2008 We study approximation hardness of the Minimum Dominating Set problem and its variants in undirected and directed graphs. Using a similar result obtained by Trevisan for Minimum Set Cover we prove the first explicit approximation lower bounds for various
Chlebikova, Janka +3 more
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
'Inductive' electronegativity scale: 2. 'Inductive' analog of chemical hardness [PDF]
, 2000 On the basis of a previously suggested approach to the calculation of 'inductive' electronegativities of atoms and groups a simple method of theoretical estimation of in situ inductive electronegativities is elaborated.
Galkin V., Cherkasov A., Cherkasov R.
core
The Effect of Silicon Deficiency on Material Properties of Noduar Cast Iron [PDF]
OUSL JournalThe brittle failure of a crankshaft was investigated. The chemical composition and material properties of the crankshaft were analyzed. The hardness profile indicated that the manufacturer used the crankshaft as cast without heat treatment.
S.D. Rasika Perera
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Advanced Engineering Materials, EarlyView.Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar +7 more
wiley +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
Journal of New Results in Science, 2014 – Chemical hardness is an important feature of substances. Lewis acids and bases have been classified to considering the chemical hardness concept and HSAB (Hard and Soft Acid- base) Principle has been demonstrated by Pearson.
Ayhan Ungördü +3 more
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