The present invention relates to ceramic cutting tools, such as, a aluminum oxide with zirconium oxide ceramic cutting tool with diffusion bonding enhanced layer and CVD coatings, particularly useful for machining modern metal materials. The mixture is then separated to recover a first phase containing treated oil in water, and a second phase containing treated abradants having a reduced concentration of mercury. An integrated semiconductor laser element is created by forming a two-wavelength LD monolithically on a GaAs substrate, and that laser element emits a laser beam that is reflected by a 45 mirror incorporated in a flat package. The reference electrode is a longitudinal distance from the recording geometry. A silicon oxynitride layer is formed on the silicon nitride layer.