TY - CPAPER AU - Gheorghe Amza TI - CONTRIBUTION REGARDING METAL PIECES RECYCLING BY OXY-GAS FLAME METALLIZATION USING ULTRASONIC ACTIVATION OF THE BASE MATERIAL T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, ENERGY AND CLEAN TECHNOLOGIES PY - 2015 DO - 10.5593/sgem2015/b41/s18.083 PB - Stef92 Technology ER -