Results 1 to 10 of about 88,120 (195)

Study on High Temperature Resistance and Process of Tin Coating [PDF]

open access: yesCailiao Baohu, 2023
Aiming at the problems such as high temperature shrinkage and discoloration of tin plating on copper-based lead frames, as well as poor resistance to salt water corrosion at room temperature, different electroplating processes were used to analyse the ...
LIU De-qiang, ZHOU Sheng-feng
doaj   +1 more source

Evaluation of Internal Stresses in Modified Near-Surface Layer of 20Kh13 Steel during Incubation Period of Water Droplet Impact Erosion

open access: yesEnergies, 2022
This study investigates the change in internal stresses of ion nitrided and Cr–CrC ion-plasma-coated 20Kh13 steel samples during the incubation period of the droplet impact erosion.
Alexey Mednikov   +5 more
doaj   +1 more source

Computational Design of Corrosion-resistant and Wear-resistant Titanium Alloys for Orthopedic Implants [PDF]

open access: yesMaterials Today Communications,2022,104465,ISSN 2352-4928, 2022
Titanium alloys are promising candidates for orthopedic implants due to their mechanical resilience and biocompatibility. Current titanium alloys in orthopedic implants still suffer from low wear and corrosion resistance. Here, we present a computational method for optimizing the composition of titanium alloys for enhanced corrosion and wear resistance
arxiv   +1 more source

Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface

open access: yesNanomaterials, 2020
Natural serpentine powders are applicable as additives for various lubricating oils. However, no uniform theories explain their tribological performance, lubrication, and wear mechanism, especially their self-repairing mechanism. Herein, the influence of
Binbin Wang   +6 more
doaj   +1 more source

Reliability Evaluation Based on Mathematical Degradation Model for Vacuum Packaged MEMS Sensor

open access: yesMicromachines, 2022
Vacuum packaging is used extensively in MEMS sensors for improving performance. However, the vacuum in the MEMS chamber gradually degenerates over time, which adversely affects the long-term performance of the MEMS sensor. A mathematical model for vacuum
Guizhen Du   +4 more
doaj   +1 more source

Study on Wear Resistance of Polyurea Coating on Metal Structures of Lifting Machinery [PDF]

open access: yesCailiao Baohu, 2022
In view of the problem that the metal structures of lifting machinery are easy to be aged and worn in harsh environment, the effects of coating thickness and load on the wear resistance of the coating on the surface of metal structure of crane were ...
XIE Tengfei, MAO Jinrong, ZHOU Yeping
doaj   +1 more source

Effect Of Magnesium Alloy Surface Spray Coating On The Wear Resistance Of Sports Equipment

open access: yesJournal of Applied Science and Engineering, 2022
In testing the wear resistance of sports instruments, Traditional methods are inadequate in predicting the wear performance and fail to predict the wear mass loss under different loads.
Hongtu Zhao
doaj   +1 more source

Hair resistance to mechanical wear [PDF]

open access: yesWear, 2021
Abstract Hair mechanical properties are primary indicators of hair integrity. Here we describe a methodology based on hair's resistance to mechanical wear to evaluate cosmetic treatments. Using a vibrational vortex cycle, we developed a protocol that relies on the plastic deformation and degradation of hair, due to frictional forces between hardened ...
Ribeiro, Artur   +3 more
openaire   +2 more sources

Effects of Powder Feed Rate on Formation of Fully Equiaxed β Grains in Titanium Alloys Fabricated by Directed Energy Deposition

open access: yesMetals, 2020
A near β titanium alloy, Ti5Al2Sn2Zr4Mo4Cr, was fabricated by directed energy deposition (DED) with different powder feed rates to investigate the formation of fully equiaxed β grains.
Qiang Zhang   +7 more
doaj   +1 more source

Significant Improvement in Wear Resistance of CoCrFeNi High-Entropy Alloy via Boron Doping

open access: yesLubricants, 2023
CoCrFeNi high-entropy alloy (HEA) exhibits excellent mechanical properties but relatively poor wear resistance. In particular, when the load reaches a certain level and the deformation mechanism of the CoCrFeNi HEA changes, the formation of shear bands ...
Haitao Zhang   +5 more
doaj   +1 more source

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