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