•  Best Review Papers

Fundamental theories and basic principles of triboelectric effect: A review

Shuaihang Pan & Zhinan Zhang

Friction 7(1), 2–17 (2019). https://doi.org/10.1007/s40544-018-0217-7

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

Igor E. Uflyand, Vladimir A. Zhinzhilo & Victoria E. Burlakova

Friction 7(2), 93–116 (2019). https://doi.org/10.1007/s40544-019-0261-y

Recent advances in friction and lubrication of graphene and other 2D materials: Mechanisms and applications

Lincong Liu, Ming Zhou, Long Jin, Liangchuan Li, Youtang Mo, Guoshi Su, Xiao Li, Hongwei Zhu & Yu Tian

Friction 7(3), 199–216 (2019). https://doi.org/10.1007/s40544-019-0268-4

• Best Research Papers

Oil-soluble ionic liquids as antiwear and extreme pressure additives in poly-α-olefin for steel/steel contacts

Guowei Huang, Qiangliang Yu, Zhengfeng Ma, Meirong Cai, Feng Zhou & Weimin Liu

Friction 7(1), 18–31 (2019). https://doi.org/10.1007/s40544-017-0180-8

Tribological behavior of coated spur gear pairs with tooth surface roughness

Huaiju Liu, Heli Liu, Caichao Zhu, Peitang Wei & Jinyuan Tang

Friction 7(2), 117–128 (2019). https://doi.org/10.1007/s40544-017-0193-3

Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations

Anuj Kumar Sharma, Jitendra Kumar Katiyar, Shubrajit Bhaumik & Sandipan Roy

Friction 7(2), 153–168 (2019). https://doi.org/10.1007/s40544-018-0199-5

Friction predication on pin-to-plate interface of PTFE material and steel

Zhuming Bi & Donald W. Mueller

Friction 7(3), 268–281 (2019). https://doi.org/10.1007/s40544-018-0224-8

Friction and wear behaviors of MoS₂-multi-walled-carbonnanotube hybrid reinforced polyurethane composite coating

Zhaozhu Zhang, Mingming Yang, Junya Yuan, Fang Guo & Xuehu Men

Friction 7(4), 316–326 (2019). https://doi.org/10.1007/s40544-018-0214-x

Interplay between microstructural evolution and tribo-chemistry during dry sliding of metals

Philipp G. Grützmacher, Sebastian Rammacher, Dominic Rathmann, Christian Motz, Frank Mücklich & Sebastian Suarez

Friction 7(6), 637–650 (2019). https://doi.org/10.1007/s40544-019-0259-5

• Best Short Communication

Tribological performance of tributylmethylammonium bis(trifluoromethylsulfonyl)amide as neat lubricant and as an additive in a polar oil

González, D. Ramos, D. Blanco, A. Fernández-González, J. L. Viesca, M. Hadfield & A. Hernández Battez

Friction 7(3), 282–288 (2019). https://doi.org/10.1007/s40544-018-0231-9

• Excellent Contributing Editorial Board Members

Prof. Valentin L. Popov

Technische Universität Berlin, Germany

Prof. Linmao Qian

Southwest Jiaotong University, China

Prof. Yu Tian

Tsinghua University, China

Prof. Qian Jane Wang

Northwestern University, USA

• Excellent Reviewers

Prof. Dae Eun Kim

Yonsei University, Republic of Korea

Prof. Roland Larsson

Luleå University of Technology, Sweden

Prof. Jun Qu

Oak Ridge National Laboratory, USA

Prof. Jun Yang

Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, China

Prof. Chengqing Yuan

Wuhan University of Technology, China

Prof. Chenhui Zhang

Tsinghua University, China