CABIN SUPERCHARGING in Scheduled AIRLINE OPERATION

A Study of the Diffusion Zone between Ta-10W Tantalum Alloy and 4150 Steel

“…The nitric ind hydrofluoric acid mixture is known to dissolve tantalum carbides. 6 , Zone I and the network extending into the Ta-IOW alloy have been attacked by these acids. However, Zone 2 shows resistance to this etchant, This behavior was a result of a thought-provoking situation because, after the steel and the Fe rich Zone 3 had been chemically stripped from the sample In boiling HCI, Zone 2 was attacked by the HN03_ plus HF similarly to Zone I.…”