Paper 16: Solid Friction and Boundary Lubrication

摘要: During the last decade considerable progress has been made in our understanding of contact between solid surfaces. Earlier work emphasized plastic deformation and more recent elastic surface asperities. However, when sliding occurs combined normal tangential stresses zone greatly enhance regime.Broadly speaking, supports earlier view that friction is attributable to adhesion at points real ploughing or tearing one by asperities on other. In high vacuum films normally present can be removed either heating repeated rubbing. As a result adhesion, wear rise very values. even under clean conditions some metallic pairs appear show relatively weak adhesion. With non-metals similar processes occur but with brittle solids they are complicated sub-surface cracking. Here crystal orientation important. ...