Results 111 to 120 of about 7,176,130 (391)
Hardness of porous nanocrystalline Co-Ni electrodeposits [PDF]
, 2013 The Hall-Petch relationship can fail when the grain size is below a critical value of tens of nanometres. This occurs particularly for coatings having porous surfaces.
A Ibañez +24 more
core +1 more source
A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?
Advanced Engineering Materials, EarlyView.Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli +5 more
wiley +1 more source
Dry film lubricant is effective at extreme loads [PDF]
, 1966 Dry film lubricant protects low speed sliding surfaces under extreme loading. The lubricant in an inorganic binder is applied to substrates with sufficient hardness to prevent surface deformation in the applicable load ...
core +1 more source
Optimization of Pulsed Nd:YAG Laser Melting of Gray Cast Iron At Different Spot Sizes for Enhanced Surface Properties [PDF]
, 2016 This paper presents a laser surface modification process of gray cast iron using different laser spot size with an aims to eliminate graphite phase and achieve minimum surface roughness and maximum depth of molten zone and microhardness properties.
A. R., Zulhishamuddin +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel +7 more
wiley +1 more source
Friction and hardness of gold films deposited by ion plating and evaporation [PDF]
Sliding friction experiments were conducted with ion-plated and vapor-deposited gold films on various substrates in contact with a 0.025-mm-radius spherical silicon carbide rider in mineral oil.
Buckley, D. H. +2 more
core +1 more source
Modeling of the case depth and surface hardness of steel during ion nitriding
, 2016 Modeling of the ion nitriding process allows solving many problems of operations management, forecasting of results and development of new treatment regimes, which is an urgent issue today. The goal of the paper was modeling of the case depth and surface
Muzahem Khalaf Mohanad +3 more
semanticscholar +1 more source
Surface Hardness of Dental Composite Resin Restorations in Response to Preventive Agents.
Journal of Contemporary Dental Practice, 2016 INTRODUCTION To assess the impact of using preventive mouthwash agents on the surface hardness of various resins composites. MATERIALS AND METHODS Hundred specimens were prepared from five types of composite resin material in a Teflon mold.
K. Al-Samadani
semanticscholar +1 more source
Effect of a multi-layer infection control barrier on the micro-hardness of a composite resin
Journal of Applied Oral Science, 2012 OBJECTIVE: The aim of this study was to evaluate the effect of multiple layers of an infection control barrier on the micro-hardness of a composite resin. MATERIAL AND METHODS: One, two, four, and eight layers of an infection control barrier were used to
In-Nam Hwang +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This perspective article explores an innovative powder metallurgical approach to producing high‐nitrogen steels by utilizing a mixture of stainless steel and Si3N4. This mixture undergoes hot isostatic pressing followed by direct quenching. The article also examines adapting this method to laser powder bed fusion (PBF‐LB/M) to overcome nitrogen ...
Louis Becker +5 more
wiley +1 more source