Vacuum diffusion bonding of tunable disc - a component of LINAC accelerator

Full text: The solid state bonding technique has been used to manufacture a tunable disc made of OFHC-Cu and austenitic stainless steel (AISI304). Joining of these materials have been carried out using Ni as an interlayer. In addition few specimens have also been bonded without Ni interlayer. Diffusion bonding experiments have been performed at temperature range from 750 to 900 degC for times up to 60 min and at a pressure from 10 to 20 MPa. Taking into account of the results of mechanical testing and microstructural observation, for a sound bond, the optimum bonding conditions were obtained at temperature 850 degC for 60 min at MPa. Based on these studies a flow chart is made for the fabrication of the tunable disc