Yazar "Samur, R." seçeneğine göre listele

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    EFFECT OF HEAT TREATMENT ON THE WEAR AND CORROSION BEHAVIORS OF A GRAY CAST IRON COATED WITH A COLMONOY 88 ALLOY DEPOSITED BY HIGH VELOCITY OXYGEN FUEL (HVOF) THERMAL SPRAY
    (Croatian Metallurgical Soc, 2013) Oz, A.; Samur, R.; Mindivan, H.; Demir, A.; Sagiroglu, S.; Yakut, A. K.
    The present work has been conducted in order to determine the influence of heat treatment on the wear and corrosion behaviours of a gray cast iron substrate coated with a Ni base coating deposited by HVOF thermal spray. The wear resistance of the coatings was obtained using a reciprocating wear tester by rubbing a 10 mm diameter steel ball on the coatings at normal atmospheric conditions. Corrosion tests were performed using potentiodynamic polarization measurements in a 3,5 % NaCl solution. It was observed that the corrosion and wear resistance of the coatings increased along with the reduction of porosity and roughness by the heat treatment.
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    Effect of heat treatment on the wear and corrosion behaviors of a gray cast iron coated with a colmonoy 88 alloy deposited by high velocity oxygen fuel (HVOF) thermal spray
    (2013) Öz, A.; Samur, R.; Mindivan, H.; Demir, A.; Sagiroglu, S.; Yakut, A.K.
    The present work has been conducted in order to determine the influence of heat treatment on the wear and corrosion behaviours of a gray cast iron substrate coated with a Ni base coating deposited by HVOF thermal spray. The wear resistance of the coatings was obtained using a reciprocating wear tester by rubbing a 10 mm diameter steel ball on the coatings at normal atmospheric conditions. Corrosion tests were performed using potentiodynamic polarization measurements in a 3,5 % NaCl solution. It was observed that the corrosion and wear resistance of the coatings increased along with the reduction of porosity and roughness by the heat treatment.
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    Novel molding technique for ECAP process and effects on hardness of AA7075
    (Kaunas Univ Technol, 2014) Kaya, H.; Ucar, M.; Cengiz, A.; Samur, R.; Ozyurek, D.; Caliskan, A.
    In this study, a novel Equal channel angular pressing (ECAP) die which named Hexa die, designed and manufactured in order to reduce process duration and eliminate manual sample rotation problems. For this reason, the surfaces of die was machined to get the cylindrical channels be able to extract out of ECAP samples. These channels provide 100% accuracy for angular routes for cylindrical samples. Experiments are carried out with the same sample materials (AA7075) at a constant temperature (210 degrees C) and C rotation. In the study, process time scenarios for traditional and novel Hexa die techniques have been compared in a theoretical time table. It has been shown that Hexa die has crucial time advantages in order to eliminating the old die process steps such as cooling and reheating time, disassembly and re-assembly of the dies, manually rotation of samples and many of others. And finally ECAP'ed samples hardness have been measured.