Friction Regimes of Water-Lubricated Diamond (111): Role of Interfacial Ether Groups and Tribo-Induced Aromatic Surface Reconstructions

被引：66

作者：

Kuwahara, Takuya ^{[1
]}

Moras, Gianpietro ^{[1
]}

Moseler, Michael ^{[1
,2
]}

机构：

[1] MicroTribol Ctr TC, Fraunhofer IWM, Wohlerstr 11, D-79108 Freiburg, Germany

[2] Univ Freiburg, Inst Phys, Hermann Herder Str 3, D-79104 Freiburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 09期

关键词：

MOLECULAR-DYNAMICS SIMULATIONS; SELF-ASSEMBLED MONOLAYERS; ATOMIC-SCALE FRICTION; NANOCRYSTALLINE DIAMOND; ELECTRONIC-STRUCTURE; AMONTONS LAW; CVD DIAMOND; CHAIN MODEL; FILMS; WEAR;

D O I：

10.1103/PhysRevLett.119.096101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Large-scale quantum molecular dynamics of water-lubricated diamond (111) surfaces in sliding contact reveals multiple friction regimes. While water starvation causes amorphization of the tribological interface, small H2O traces are sufficient to preserve crystallinity. This can result in high friction due to cold welding via ether groups or in ultralow friction due to aromatic surface passivation triggered by tribo-induced Pandey reconstruction. At higher water coverage, Grotthuss-type diffusion and H2O dissociation yield dense H/OH surface passivation leading to another ultralow friction regime.

引用

页数：6

共 52 条

[1] Amontons' law at the molecular level [J].

Berman, Alan ;

Drummond, Carlos ;

Israelachvili, Jacob .

TRIBOLOGY LETTERS, 1998, 4 (02) :95-101

[2] Energy filtering transmission electron microscopy and atomistic simulations of tribo-induced hybridization change of nanocrystalline diamond coating [J].

Bouchet, M. I. De Barros ;

Matta, C. ;

Vacher, B. ;

Le-Mogne, Th. ;

Martin, J. M. ;

von Lautz, J. ;

Ma, T. ;

Pastewka, L. ;

Otschik, J. ;

Gumbsch, P. ;

Moseler, M. .

CARBON, 2015, 87 :317-329

[3] Dehydrogenation and the surface phase transition on diamond (111): Kinetics and electronic structure [J].

Cui, JB ;

Ristein, J ;

Ley, L .

PHYSICAL REVIEW B, 1999, 59 (08) :5847-5856

[4]

De Barros-Bouchet M I, 2012, J PHYS CHEM C, V116, P6966

[5] Self-consistent-charge density-functional tight-binding method for simulations of complex materials properties [J].

Elstner, M ;

Porezag, D ;

Jungnickel, G ;

Elsner, J ;

Haugk, M ;

Frauenheim, T ;

Suhai, S ;

Seifert, G .

PHYSICAL REVIEW B, 1998, 58 (11) :7260-7268

[6] Tribological properties of nanocrystalline diamond films [J].

Erdemir, A ;

Fenske, GR ;

Krauss, AR ;

Gruen, DM ;

McCauley, T ;

Csencsits, RT .

SURFACE & COATINGS TECHNOLOGY, 1999, 120 :565-572

[7] Performance characteristics of circular diamond saws in cutting different types of rocks [J].

Ersoy, A ;

Atici, U .

[8]

Frenkel D., 1996, Understanding molecular dynamics simulation from algorithms to applications

[9] Atomic-scale friction on diamond: A comparison of different sliding directions on (001) and (111) surfaces using MD and AFM [J].

Gao, Guangtu ;

Cannara, Rachel J. ;

Carpick, Robert W. ;

Harrison, Judith A. .

LANGMUIR, 2007, 23 (10) :5394-5405

[10] Frictional forces and Amontons' law: From the molecular to the macroscopic scale [J].

Gao, JP ;

Luedtke, WD ;

Gourdon, D ;

Ruths, M ;

Israelachvili, JN ;

Landman, U .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (11) :3410-3425

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