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David Woodward and Shaun Friel
High friction surfacing (HFS) is a specialist type of road coating with very high skid resistance. It is used in the UK at locations where there is significant risk of serious or fatal accidents. This paper considers the aggregate used in HFS. Calcined b...
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Po-Chou Chen, Shu-Mei Chang, Hao-Chung Kuo, Fu-Cheng Chang, Yu-An Li and Chao-Cheng Ting
In this research, a 14 nm high-performance computing application-specific integrated circuit was coated with a 5?20 nm Al2O3 thin film by atomic layer deposition in room-temperature conditions to study its performance in terms of reliability with differe...
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Marek Milanowski, Alaa Subr and Stanislaw Parafiniuk
The use of worn-out agricultural nozzles in pesticide application has a negative effect on the efficiency and cost of the application process. It also has an effect on environmental pollution due to an excessive amount of pesticide being applied when spr...
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Alfio Di Giovanni, Carmine Todaro, Marilena Cardu, Stefano Bianchini and Brunello Forfori
This paper presents a laboratory test campaign focused on the reduction of the wear phenomenon related to a material extracted from a marble quarry. The aim of the work is to propose a potential solution for the wear reduction pertaining to chainsaw cutt...
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Jessica Hembus, Felix Ambellan, Stefan Zachow and Rainer Bader
Currently, new materials for knee implants need to be extensively tested but such tests are expensive in a knee wear simulator in a realized design. However, using a rolling-sliding test bench, these materials can be examined under the same test conditio...
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Ting Xie, Shihao Feng, Yongheng Qi and Ailong Cui
Coatings are normally employed to meet some functional requirements. There is a kind of self-generated coating during use, such as the transfer layer during sliding, which may greatly affect the tribological behavior. Although the transfer layer has arou...
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Wan-Jui Shen, Ming-Hung Tsai and Jien-Wei Yeh
(Al0.34Cr0.22Nb0.11Si0.11Ti0.22)50N50 high-entropy nitride coatings prepared by reactive magnetron sputtering have been proved to have high hardness and superior oxidation resistance. Their thermal stability, adhesion strength, and cutting performance we...
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Shahereen Chowdhury, Bipasha Bose, Kenji Yamamoto and Stephen C. Veldhuis
The TiAlCrSiYN-based family of physical vapor deposition (PVD) coatings were systematically designed through the incorporation of TiAlCrN interlayer to increase coating adhesion and consequently the tool life for extreme conditions that arise during dry ...
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Weixiang Yao, Yubin Lan, W. Clint Hoffmann, Jiyu Li, Shuang Guo, Huihui Zhang and Juan Wang
To investigate the spray atomization characteristics of aerial nozzles adapted to manned agricultural helicopters under medium-low airflow velocity (0 to 27.8 m/s) conditions, the droplet size test was carried out in both wind tunnel and field tests. In ...
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Joon-Hwan Bae, Hyun-Duck Kwak, Sung-Jae Heo, Chang-Ho Choi and Jong-Soo Choi
Floating ring seals are widely used as a leakage control solution for turbomachines because they effectively operate with small clearances between the shaft and seal. The oxidizer pump of the 7 tonf liquid engine in the Korea Space Launch Vehicle II (KSL...
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Dongai Wang and Meihua Liu
The amount of wear is one of the most important indicators for assessing the wear resistance of materials, controlling product quality and studying the mechanisms of frictional wear of materials. Due to the limitations of the friction and wear test equip...
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Jinquan Sun, Dongrui Wang, Jie Yang, Fujie Li, Lingli Zuo, Feng Ge and Yunbo Chen
In order to solve the failure problem between the crankshaft and the connecting rod friction pair, nano-Cu/microalloyed gradient coating was prepared on the surface of the crankshaft by in situ gaseous nitriding process. Electron probe analysis confirmed...
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Henryk Kania, Mariola Saternus, Jan Kudlácek and Jakub Svoboda
The article examines the impact of the addition of Al, Ni, and Bi to a zinc bath on the microstructure and corrosion resistance of hot dip galvanizing coatings. The microstructure on the surface and the cross-section of the coatings obtained in the Zn-Al...
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Andrea Milanti, Heli Koivuluoto, Petri Vuoristo, Giovanni Bolelli, Francesco Bozza and Luca Lusvarghi
Thermally-sprayed Fe-based coatings have shown their potential for use in wear applications due to their good tribological properties. In addition, these kinds of coatings have other advantages, e.g., cost efficiency and positive environmental aspects. I...
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Bartosz Moczulak, Grzegorz Zywica, Wojciech Miaskowski, Wojciech Kinski and Pawel Baginski
Developing high-speed rotating machines, such as microturbines, requires new solutions for bearing systems. Foil bearings are one of the fastest-growing high-speed bearing technologies. This article presents the results of experimental studies on foil be...
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Sergio Alexandre Gehrke, Berenice Anina Dedavid, Germán Odella Colla, Piedad N. De Aza and Leticia Pérez-Díaz
(1) Background: The present pilot in vitro study evaluated, physically and biologically, the effects produced by the wear of the titanium surface using different drill models. (2) Methods: Titanium disks were subjected to wear using four different burs a...
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Jiawei Kelvin Bi, Zhi Cheng Kelvin Loke, Chi Keong Reuben Lim, Kok Hoon Tony Teng and Pak Keng Koh
This study investigates the mechanical properties of aluminium 2024 (Al-2024) and aluminium 7075 (Al-7075) cold-sprayed materials and coatings for repairs. It aims to determine the acceptable data needed to meet regulatory requirement when substantiating...
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Korobov Yury, Michael Fili?pov, Aleksey Makarov, Irina Malygina, Natalia Soboleva, Davide Fantozzi, Milanti Andrea, Heli Koivuluoto and Petri Vuoristo
High wear and corrosion of parts lead to an increase in operating costs at thermal power plants. The present paper shows a possible solution to this problem through the arc spraying of protective coatings. Cored wires of the base alloying system Fe-Cr-C ...
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Xiaomei Chen, Jiangang Qian and Xiaotian Hu
Cobalt-phosphorus (Co-P) alloy is a promising material for the replacement of traditional hard chromium alloy of high hardness. In this paper, the cobalt-phosphorus alloy layer with high phosphorus content was formed by electrodeposition in a cobalt sulf...
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Szilárd Kovács
Pág. 3 - 12
Fretting damage to fuel rods reduces the service lives of the fuel assemblies and therefore increases reactor operating costs. The future development of fretting-resistant spacer grids necessitates the investigation of fretting behavior by means of model...
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