Synthesis of Ni-Based Bulk Metallic Glasses for Penetrating Materials

Abstract

The Ni-based bulk metallic glasses (BMGs(Ni 59 Zr 16 Ti 13 Nb 7 Si 3 Sn 2 )) modified by Al, Hf and W have been synthesized for a specific application of penetrating materials. When Al was replaced with Zr of the Ni 59 Zr 16 Ti 13 Nb 7 Si 3 Sn 2 BMG, a large glass forming ability was observed, enabling to fabricate 7 mm cylindrical amorphous specimen. Also, when Hf or W was replaced with Ni of the Ni 59 Zr 16 Ti 13 Nb 7 Si 3 Sn 2 BMG, the 7 mm amorphous BMG specimen was obtained. For the Al modified BMG (Ni 59 Zr 15 Ti 13 Nb 7 Si 3 Sn 2 Al 1 ), a high strength of $2:6 GPa with $10% plastic strain was observed. It appears that the Hf modified BMG showed an excellent candidate for the application of penetrating materials among the examined BMGs.

Algorithm for the Extraction of Optimal Gripping Force Range with the Robot Gripper

“…Recently, it has been researched about the estimate of frictional coefficient which is hard to measure directly, and the further usage of this estimated frictional coefficient in the various area. [1][2] On the other hand, in the robot system level, it is researched that adopt the dual arm robot to replace human beings at the assembly and packaging line of an electric device such as a mobile phone and a television. This dual arm robot is adequate to do simple and repeated works.…”