Effect of Aluminizing on the Oxidation Behavior of the Titanium Alloy,IMI 834

This article presents the development of a simple and cost-effective coating to protect the titanium alloy, IMI 834, from oxidation and alpha-case formation so that the alloy can be used safely, even at relatively high operating temperatures. A surface-modification technique, pack aluminizing, was employed to coat the alloy. Cyclic-isothermal oxidation studies at 800°C revealed that the plain aluminide coating obtained by pack aluminizing exhibits good oxidation resistance compared to the uncoated alloy. Based on the results obtained by different techniques, it is suggested that the plain aluminide is an economical, simple, and efficient coating for prevention of alpha-case formation and protection against oxidation of components fabricated from IMI 834.