Abstract:
Trial-and-error methods are typically used to optimize processing variables affecting tape-casting performance, variables such as the tape thickness, casting speed, powder size distribution, and variations in suspension chemistry. More economical methods of process optimization and control are needed, methods that provide nondestructive, on-line inspection of tape-casting defects, including pores, surface pits and scratches, thickness and flatness variations, and inclusions. We developed a prototype, radiography technique that enables rapid, areal mapping of these defects, including pores as small as 10 microns and thickness variations on the order of 1 per cent. Rapid changes in defect statistics can also be monitored by coupling the radiography with image analysis. We applied this technique to study the role of particle size and tape thickness on defect evolution in alumina tapes.
(Ref. SXVIIIP-002-97)
Source: NDE of Ceramics '97 May 4-7, Symposium on Nondestructive Evaluation of Ceramics
at the American Ceramic Society 99th Annual Meeting, Cincinnati, Ohio.
Buying the Symposium Proceedings from the American Ceramic Society.
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