It is thus an object of the invention to obtain a ceramic material for chipforming {TAIL ~ machining}, particularly of steel, in which the above mentioned weaknesses of {HEAD ~ todays known aluminum oxide based cutting tool materials} have been eliminated 
It is thus an object of the invention to obtain a ceramic material for chipforming { TAIL ~ machining } , particularly of steel , in which the above mentioned weaknesses of { HEAD ~ todays known aluminum oxide based cutting tool materials } have been eliminated
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