THE INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY OF TOKYO
THE INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY OF TOKYO
出版者
東京大学理工学研究所
雑誌名
東京大學理工學研究所報告
巻
4
号
7/8
ページ
176 - 190
発行年
1951-03-15
抄録（英）
The kinetic frictions of mono- and multi-molecular layers of stearic acid and barium stearate are measured for various conditions of loads, temperatures, curvatures of sliders and combinations of rubbing materials. The Langmuir-Blodgett technique is used for the deposition of molecular layers on plate (Y-deposition). The decrease of friction with the increase of the number of layers is about the same as observed before by other authors, but the effects of curvatnre of the slider and the combination of rubbing materials are found not to be neglected. Two regions in boundary friction reported. before (this Report, 1 (1947), 50.) are also observed in this experiment, the critical transition pressure being 150-200 kg/mm^2, and the film thickness for the second region is estimated to be of one or three molecular layers. The rates of increase of friction and wear of molecular layers for various conditions during repetition of sliding are discussed. The mechanical transition temperatures for various thicknesses of molecular layers are measured by stick-skip method, and the increase of the transition temperature with the increase of number of layers is discussed in connection with the relation between friction and number of layers.
單分子層及び多分子層の摩擦
SA1511485.pdf
(1.76MB)
