Results 21 to 30 of about 530,053 (388)

The Effect of Elements of Secondary Structures on the Wear Resistance of Steel in Friction against Experimental Aluminum Alloys for Monometallic Journal Bearings

open access: yesLubricants, 2019
This article describes the elemental composition of secondary structures formed on the steel contact surface during wear test against experimental Al alloys. Wear tests were carried out according to the rotating steel roller-fixed shoe of an antifriction
Ekaterina Kuznetsova   +4 more
doaj   +1 more source

Modeling the microstructural evolution during constrained sintering [PDF]

open access: yes, 2014
A numerical model able to simulate solid-state constrained sintering is presented. The model couples an existing kinetic Monte Carlo (kMC) model for free sintering with a finite element model (FEM) for calculating stresses on a microstructural level. The
Bjørk, R., Frandsen, H. L., Pryds, N.
core   +4 more sources

A Model for Partial Viscous Sintering [PDF]

open access: yes, 1991
A mathematical model describing the sintering rate of a viscous material powder bed is presented. This model assumes that the powder bed is composed of cubic packed, equal-size spherical particles.
Barlow, Joel J.   +3 more
core   +1 more source

A high entropy silicide by reactive spark plasma sintering

open access: yesJournal of Advanced Ceramics, 2019
A high-entropy silicide (HES), (Ti0.2Zr0.2Nb0.2Mo0.2W0.2)Si2 with close-packed hexagonal structure is successfully manufactured through reactive spark plasma sintering at 1300 °C for 15 min.
Yuan Qin   +5 more
semanticscholar   +1 more source

Mechanisms Involved in the Formation of Secondary Structures on the Friction Surface of Experimental Aluminum Alloys for Monometallic Journal Bearings

open access: yesLubricants, 2018
The processes taking place on the friction surface of high-alloyed aluminum alloys working with steel whilst replacing bronze journal bearings with aluminum are investigated. In this regard, eight experimental aluminum alloys with an Sn content from 5.4%
Pavel Podrabinnik   +4 more
doaj   +1 more source

Parametric Analysis of the Selective Laser Sintering Process [PDF]

open access: yes, 1990
Qualitative and quantitative analyses are required to develop Selective Laser Sintering into a viable Manufacturing process. A simplified mathematical model for sintering incorporating the heat tJ;ansfer equation.
Barlow, Joel W.   +2 more
core   +1 more source

Relationship of Secondary Structures and Wear Resistance of Antifriction Aluminum Alloys for Journal Bearings from the Point of View of Self-Organization During Friction

open access: yesEntropy, 2019
The paper investigates the relationship between the tribological properties/compositions of new aluminum antifriction alloys and compositions of the secondary structures formed on their friction surfaces.
Iosif Gershman   +5 more
doaj   +1 more source

Sintering with Additives

open access: yesJournal of the Japan Society of Powder and Powder Metallurgy, 1987
Shrinkage, grain growth, dimensional changes and homogenization during liquid phase sintering of ceramics or metallic systems, are influenced by the presence of additives. Additives are intentionally added to control the microstructural and dimensional development during sintering. Additives may be present in solid state only or may form liquid phases.
Günter Petzow, Wolfgang A. Kaysser
openaire   +3 more sources

Sinterability of Calcium Phosphate Through Rapid Sintering

open access: yesJournal of Physics: Conference Series, 2021
AbstractDevelopment of dense nanostructured hydroxyapatite (HA) with the major concern to enhance densification while limiting its grain growth has received great demand. This is due to inherent brittleness and lower mechanical strength of HA ceramic.
Singh Ramesh   +3 more
openaire   +2 more sources

Influence of the Nonequilibrium Material State on Wear Resistance

open access: yesLubricants, 2019
The influence of the nonequilibrium state of a material on its wear resistance is investigated in this study. Using methods of non-equilibrium thermodynamics and the theory of self-organization, a non-equilibrium material is shown to possess an overall ...
Iosif Gershman   +5 more
doaj   +1 more source

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