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Study of Hardness ,Wear and Corrosion Resistance of ZrO2 Ceramic Coats Prepared by Spray Pyrolysis Method
دراسة الصلادة ومقاومة البلي ومقاومة التآكل الكيمياوية لطلاءات الزركونيا


In the present work pure and doped ZrO with (Al and Co 5wt%) thin film hasbeen deposited on stainless steel 304 substrates by spray pyrolysis technique .The filmmicrohardness, wear resistance, and the corrosion at different acids and alkaline arestudied . The results are proved that the microhardness and wear resistance wereimproved after doping specially with (Co).The microhardness of the films has beenimproved from( 927 Kg/mm2 ) for pure ZrO22film to(1095 Kg/mm2) 5 wt% of Co .Wear resistance has been improved from (10*10-10 g/cm 10) for pure ZrO g/cm ) after doping with Co. Loss of weight by corrosion was decreased after coating and doping . 2to (3.79 *10

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