Chemisorption of organic molecules on single crystal surfaces of transition metals. Adlayer stoichiometry, arrangement and electronic states

1975 ◽  
Vol 60 ◽  
pp. 119 ◽  
Author(s):  
T. A. Clarke ◽  
I. D. Gay ◽  
B. Law ◽  
R. Mason
2000 ◽  
Vol 649 ◽  
Author(s):  
William W. Gerberich ◽  
Natalia I. Tymiak ◽  
Donald E. Kramer

ABSTRACTUnexpected friction and wear transitions occur in transition metals associated with dislocation emission, dislocation storage, and oxide break-through phenomena. Both normal nanoindentation and nanoscratch evaluations of conical diamond tips driven into tungsten {100} single crystal surfaces have been conducted. In terms of initiating plasticity undert the contact, this represents a high Peierl's barrier for dislocation motion in transition metals. Both quasi-equilibrium and kinetic aspects are reported along with current but speculative ideas on multiple friction and wear transitions. Preliminary results show that yielding under contacts can produce a 250 nm displacement excursion. Ramifications are seen in terms of friction coefficients which can double during the near-instantaneous yield excursion but then continue to triple from about 0.05 to 0.15 in the pile-up phase in front of the sliding contact. Implications of how nanotribological issues such as adhesion connect through this mesoscale activity to macroscopic friction and wear are discussed.


ChemInform ◽  
2010 ◽  
Vol 31 (46) ◽  
pp. no-no
Author(s):  
J. Lipkowski ◽  
G. Szymanski ◽  
A. Chen ◽  
I. Burgess ◽  
D. Bizzotto ◽  
...  

2021 ◽  
pp. 138947
Author(s):  
José M. Gisbert-González ◽  
María V. Oliver-Pardo ◽  
Francisco J. Sarabia ◽  
Víctor Climent ◽  
Juan M. Feliu ◽  
...  

1976 ◽  
Vol 9 (7) ◽  
pp. 248-256 ◽  
Author(s):  
Gabor A. Somorjai

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