• leidenfrost effect
    Is a phenomenon in which a liquid, in near contact with a surface significantly hotter than the liquid's boiling point, produces an insulating vapor layer which keeps that liquid from touching the metal surface. The Leidenfrost temperature is the temperature at which the liquid starts to touch the surface.
  • liquidus temperature
    Is the maximum temperature at which crystals can co-exist with the melt in thermodynamic equilibrium. Above the liquidus temperature the material is homogeneous.
  • lost foam casting
    Is similar to investment casting except that polystyrene foam is used instead of wax.
  • low-pressure die casting
    A process for producing engineered parts by injecting molten metal at low pressure (typically using air between 15 - 100 kPa) into reusable steel molds (moulds).
  • lubricity
    Is a measure of the reduction in friction by a lubricant.