[B-7-5] Feasibility of injection molded direct joining of steel and polymer 〇Weiyan Chen1、Fuminobu Kimura1、Eiji Yamaguchi2、Nayuta Horie2、Yusuke Kajihara1 (1.The University of Tokyo、2.SINTOKOGIO LTD. ) キーワード:Surface treatment、Injection molded direct joining、Steel、Micro-blasting、Tensile-shear strength