Ultrasonic Evaluation of Spray-Dried Ceramic Powders During Compaction
There is a growing need to nondestructively evaluate (NDE) compacted ceramic powder parts in the green (unfired) state. In many cases, the quality of the final sintered product is determined by the quality of the starting powder and its homogeneity after compaction. If inferior compacts could be detected, it would be possible to reject them prior to further costly processing stages . Some flaws can occur during subsequent sintering , or machining , or polishing , etc. The quality control of ceramics can be enhanced by applying NDE methods at several stages of processing to narrow the possible origins of a particular problem.
KeywordsWave Amplitude Wave Speed Ultrasonic Wave Ceramic Powder Alumina Powder
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