SINGLE-ASPERITY FRICTION IN FRICTION FORCE MICROSCOPY - THE COMPOSITE-TIP MODEL

被引：75

作者：

PUTMAN, CAJ ^{[1
]}

IGARASHI, V ^{[1
]}

KANEKO, R ^{[1
]}

机构：

[1] NIPPON TELEGRAPH & TEL PUBL CORP, ADV TECHNOL CORP, MUSASHINO, TOKYO 180, JAPAN

来源：

APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 23期

关键词：

D O I：

10.1063/1.113729

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Friction measurements on muscovite mica and glass have been performed with a friction force microscope using Si3N4 tips. The environment was changed from ambient conditions to N2- or Ar-gas conditions. In ambient conditions, the friction-versus-load curves showed a nonlinear behavior closely following the Hertzian contact mechanics of a single-asperity contact: friction force ∼load2/3. For the same tip under gaseous conditions the friction force increased linearly with the load, indicating multi-asperity contact. A new model is proposed to explain this change in the nature of the friction behavior. In this composite-tip model, the tip is formed by the actual Si3N4 tip and]] solidlike" contaminants present in enclosed cavities between tip and sample surface.© 1995 American Institute of Physics.

引用

页码：3221 / 3223

页数：3

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