Microwave-Induced Heating and Sintering of Ni-Nb-Sn Metallic Glassy Powder in a Single Mode 915 MHz Applicator

摘要

Microwave (MW)-induced heating and sintering process is emerging as an innovativernand highly effective material processing method offering many advantages over conventionalrnmethods especially for sintering application. In the present study, using a gas atomizedrnNi_(59.35)Nb_(34.45)Sn_(6.2) metallic glassy alloy powder, microwave-induced heating and sintering wasrncarried out by using a single mode 915 MHz microwave applicator equipped with an aluminarnpressure loading system in a separated magnetic (H-) field. The structure and thermal stability ofrnthe gas atomized powders and the sintered samples were investigated. A bulk sintered samplernwith a diameter of 30 mm was produced using a loading pressure of about 5 MPa.