화학공학소재연구정보센터
Computers & Chemical Engineering, Vol.20, No.S, 1185-1190, 1996
Computer-Aided Manufacturing of Centrifugal SHS Coatings
A computer-aided process for coated-pipe manufacturing using a centrifugal self-propagating high-temperature synthesis (SHS) technique is proposed. The process is based on the occurrence of a thermite reaction involving Fe2O3 and aluminum in a field of centrifugal forces and it allows for the preparation of coatings constituted by a ceramic layer of alumina in the innermost region of the pipe and an iron layer between the substrate pipe and the alumina one. The effect of various operating conditions on coating stratification and adhesion is studied using this system. The centrifugal acceleration appears to be the most important processing variable and therefore a strategy to control the process by suitably adjusting the rotating speed of the pipe through the computer is suggested.