Results 91 to 100 of about 19,017 (290)

Super wear-resistant WB4–B super-hard ceramic by in-situ formed lubrication film in high moisture

Journal of Advanced Ceramics
Only a few materials demonstrate ultralow wear performance in specific fragile environments. We propose a self-adaptive wear strategy to achieve excellent wear resistance at high moisture contents through a super-hard substrate and an in situ lubrication
Guixin Hou, Wenyuan Chen, Qichun Sun, Juanjuan Chen, Jiao Chen, Hui Tan, Jun Cheng, Shengyu Zhu, Jun Yang, Weimin Liu   +9 more
doaj   +1 more source

Droplet Electricity Generators With Maximized Energy Collection Zone Enabled by Aloe‐Inspired Midrib and Cuticle

Advanced Materials, EarlyView.
An Aloe‐pinspired droplet electricity generator (A‐DEG) overcomes the limited energy collection zone of conventional DEGs by guiding impact droplets through a channeling midrib and artificial cuticle. The channeling midrib induces uni‐directional droplet spreading, while the artificial cuticle on the midrib further reinforces this behavior through its ...
Gibeom Lee, Eunbyeol Kim, Kyongtae Choi, Minjun Song, Sunmin Jang, Dongwhi Choi, Donghyun Seo, Min‐Gyu Lee, Younghoon Lee   +8 more
wiley   +1 more source

Diamond and diamond-like carbon for tribology and corrosion protection: a retrospective review

Functional Diamond
Diamond and diamond-like carbon (DLC) films serve as cornerstone materials in surface engineering for tribology and corrosion protection. Diamond films, synthesized via chemical vapor deposition, offer exceptional hardness, thermal conductivity, and ...
Chenglong Mou, Li Zhang, Zhengyu Liu, Xueqian Cao, Fu Wang, Guangan Zhang, Yongqing Fu, Qunji Xue   +7 more
doaj   +1 more source

Exploring the friction and wear behaviors of Ag-Mo hybrid modified thermosetting polyimide composites at high temperature

Friction, 2019
Polyimide composites have been extensively used as motion components under extreme conditions for their thermal stability and special self-lubricating performance.
Chunjian Duan, Ren He, Song Li, Mingchao Shao, Rui Yang, Liming Tao, Chao Wang, Ping Yuan, Tingmei Wang, Qihua Wang   +9 more
doaj   +1 more source

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

Advanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir, Darrius Dias, Jacob Bons, MD Wasek Foysal, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Development of a Simulation System with Integrated In Situ Monitoring Capabilities for the Lubrication State of Rolling Elements in Space Control Moment Gyro Bearings

Lubricants
As a core actuator for attitude control in spacecraft, the lubrication state of the bearing rolling elements in the Control Moment Gyro (CMG) critically determines the operational lifetime and control accuracy of the overall assembly.
Zhaoliang Dou, Zhuangzhuang Du, Saihang Zhou, Gang Zhou, Shaohua Zhang, Lu Gao, Ye Yang, Fengbin Liu   +7 more
doaj   +1 more source

A Survey of Interlayer Interaction Models for Graphene and Other 2D Materials

Advanced Materials Interfaces, EarlyView.
Van der Waals interactions arising from electronic polarization at atomically close interfaces generate corrugated interlayer energy landscapes that govern normal and tangential tractions. This review presents an overview of quantum, atomistic, analytical, and continuum modeling approaches, highlighting their roles across length scales in capturing ...
Gourav Yadav, Shakti S. Gupta, Roger A. Sauer   +2 more
wiley   +1 more source

Dynamic covalent chemistries of thermosetting polymer for recyclability and intelligent lubrication

Friction
Recently, the focus of materials research has shifted toward intelligent materials and structures with customizable properties and stimulus-responsive functions.
Qihua Wang, Nan Zhang, Xinrui Zhang, Liming Tao, Yaoming Zhang, Zenghui Yang, Tingmei Wang   +6 more
doaj   +1 more source

On the Friction and Wear Mechanisms of Electrified Steel Contacts in CO2: Unveiling the Role of Carbon‐Rich Tribofilms Under Dry Sliding Conditions

Advanced Materials Interfaces, EarlyView.
This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos, Seungjoo Lee, Cagatay Yelkarasi, Leonardo I. Farfan‐Cabrera, Ryuichi Okamoto, Hitoshi Washizu, Ali Erdemir   +6 more
wiley   +1 more source

Super‐Durable, Tough Shape‐Memory Polymeric Materials Woven from Interlocking Rigid‐Flexible Chains

Advanced Science
Developing advanced engineering polymers that combine high strength and toughness represents not only a necessary path to excellence but also a major technical challenge.
Jing Xu, Mingchao Shao, Tianze Chen, Song Li, Yaoming Zhang, Zenghui Yang, Nan Zhang, Xinrui Zhang, Qihua Wang, Tingmei Wang   +9 more
doaj   +1 more source