Journal of Advanced Marine Engineering and Technology
- 제11권4호
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- Pages.50-58
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- 1987
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
이종금속간마찰시 온도변화특성에 관한 연구
Characteristics of temperature change in friction between different metals
초록
At present it has been cleared that even carefully polished surfaces have irregularities on them which are large compared with molecular dimensions by the progress of a scanning electron microscope. When two solids are placed together, the real area of contact is very small, so that the local pressure is high and, in general, exceeds the yield pressure of the metal. Plastic flow of the solid occurs at the summits of the irregularities so that the real area of contact is proportional to the applied load. There is adhesion at local resions of contact and the friction is, in a large measure, the force required to shear them. On this view point, the friction experiment with different specimens which are carbon steel, copper and constantan was attempted to know the characteristics of temperature change in contact with different metals. Various experiments are summerized as follows; 1) With metals of high melting point, momentary 1000 .deg. C may last below
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