Author/Authors :
Tay، نويسنده , , B.Y. and Loh، نويسنده , , N.H. and Tor، نويسنده , , S.B. and Ng، نويسنده , , F.L. and Fu، نويسنده , , G. and Lu، نويسنده , , X.H.، نويسنده ,
Abstract :
The paper describes the fabrication of micro gears of diameter and height 1 mm by micro powder injection moulding. 316L stainless steel powder of 2.4 µm (d50) is mixed with a multi-component wax-based binder system. The feedstock is then injection-moulded into micro gears followed by debinding and sintering. The microstructure of the micro gear at its tooth and hub is studied by electron backscattered diffraction. The average grain size at the hub is ~ 5 µm. However, a high content of annealing twin and a significant grain growth is found at the tooth.
Keywords :
Micro powder injection moulding , Micro gear , grain growth , electron backscattered diffraction , grain size
