نتایج جستجو برای: physical vapor deposition pvd

تعداد نتایج: 776219  

Journal: :Sustainability 2021

This work deals with a comparison between electroplating and Physical Vapor Deposition (PVD) finishing technologies applied in the fashion industry, special focus on their environmental impacts. The goal of this is to present validate Decision Support System (DSS) allowing companies identify, through Life Cycle Assessment (LCA) analysis, which two types processes more suitable specific KPIs. Af...

Journal: :Coatings 2022

In this study, (Gd0.9Yb0.1)2Zr2O7 (GYbZ)/yttria-stabilized zirconia (YSZ) double-ceramic-layer (DCL) thermal barrier coatings (TBCs) were prepared by plasma spray-physical vapor deposition (PS-PVD). The microstructure, mechanical performance, and shock behavior of with spraying distances 600, 800, 1000 mm investigated. GYbZ coating a distance 600 showed closely packed columnar structure. Howeve...

Journal: :Friction 2023

Abstract To date, MoS 2 can only be achieved at microscale. Edge pinning effect caused by structure defects is the most obvious barrier to expand size of structural superlubricity macroscale. Herein, we plan pin edge planes with nanospheres, and then incommensurate formed between adjacent rolling nanoparticles reduce friction. The sputtered film was prepared physical vapor deposition (PVD) in a...

Journal: :Coatings 2021

The microtopography of a honing wheel surface composed active abrasive grains is the key factor affecting characteristics, and control it sufficient condition to realize high-efficiency precision honing. Based on magnetron sputtering method phase field method, theoretical model cubic boron nitride (CBN) coating formation established. physical vapor deposition (PVD) discrete equation solved by f...

Journal: :Crystals 2023

Using two kinds of targets (gallium and silicon dioxide) the rf magnetron sputtering deposited technique, GdOx:SiO2 thin film RRAM devices were on TiN/Si substrate to form a metal–insulator–metal (MIM) structure. In addition, different oxygen concentrations power parameters prepared for films. Decrease defects vacancies films used repaired by rapid thermal annealing technology. Indium tin oxide...

2010
Han Hu Zongbin Zhao Quan Zhou Jieshan Qiu

Introduction Nanocarbons have attracted worldwide attention in nanoscience and nanotechnology communities during the past two decade because of their unique mechanical and electrical properties, which make them great potential in catalysis, electrochemical devices, field emission devices and composites[1-2]. However, the high cost and low yield for production of these materials remains the bott...

2008
M. Stranzenbach B. Saruhan

ABSTUCT Environmental pollution by vehicles, turbines and aircrafts has enormously increased in the last decade. New generation lean-burn combustion engines which are more effective and q u i r e less fuel consumption will raise the emission of nitrogen oxides even more. Thus, especially in urban areas, more stringed environmental regulations are to release which can only be met by development ...

Journal: :Applied Thermal Engineering 2022

We elucidate the separate effect of a thin Cr coating deposited by physical vapor deposition (PVD) on subcooled flow boiling performance zircaloy-4. First, we run experiments prototypical zircaloy-4 surfaces mimicking scratch pattern and surface roughness nuclear reactor claddings. Then, PVD-coat 0.3 µm thick chromium layer same exact repeat investigations. All are using deionized water at atmo...

Journal: :Avicenna Journal of Dental Research 2023

Background: The methods of increasing the longevity dental burs by improving mechanical properties these surfaces, can increase their longevity. This study assessed effect diamond-like carbon (DLC) coating applied physical vapor deposition (PVD) technique on wear diamond and tungsten carbide (TC) burs. Methods: In this in vitro study, 30 TC were evaluated four groups, including without (control...

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