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To solve the problem of undesired rapid wear of the piston and high leakage in the combustion chamber, various technical approaches have been presented to decrease the friction between internal compression piston ring and cylinder liner. Surface micro-texturing is one of the most efficient methods to mitigate parasitic losses. In this paper, surface micro-textures with different dimple distribution...
The cutting temperature always reaches over 1000degC during high speed cutting with Al2O3 ceramic tools. Diffusion wear is the main wear mechanisms at such high temperature. In this paper, the rules of diffusion wear for Al2O3 ceramic tools are studied based on thermodynamics. Dissolution concentrations in typical normal workpiece materials of ceramic tool material at different temperature are then...
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