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Dynamic Characterization in Advanced Manufacturing

  • Robert L. Snyder (a1) and Bin-Jiang Chen (a1)


The coming era of reduced defense funding will dramatically alter the way in which advanced materials develop. In the absence of large funding researchers must concentrate on reducing the time that the R&D of a new materia) consumes. One way in which speed may be achieved is via the development of very fast dynamic characterization procedures which can rapidly and intelligently monitor and optimize the formation of a desired microstructure. Another potential advantage to this approach is its ability to characterize the actual amount of material which goes into a final product; permitting a rapid transition from R&D to manufacturing by avoiding the problems associated with scale-up. Example high-temperature dynamic characterization procedures have been applied to the problem of trying to improve the current carrying capacity of the YBa 2 Cu 3 O 7-8 ceramic superconductor by melt-texturing. These procedures have led to a technique for the preparation of specimens with J c on the order of 10,000 A/cm2.



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7. Rodriguez, M.A., Chen, B.J., and Snyder, R.L., “The Formation Mechanism of Melt-Textured YBa2Cu3O7-δ ,” Physica C 195 185194 (1992).
8. Snyder, R.L., Rodriguez, M.A., Chen, BJ., Matheis, D.P., Gobel, H.E., Zoro, G., and Seebacher, B., “Analysis of YBa2Cu307°5 Peritectic Reactions and Orientation by High-Temperature XRD and Optical Microscopy,” Adv. X-ray Anal. 35, 623632 (1992).
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11. Chen, B.J., Rodriguez, M.A., Misture, S.T., and Snyder, R.L., “Effect of Undercooling Temperature on the Solidification Kinetics and Morphology of YBCO During Melt Texturing,” Physica C 217 367375 (1993).
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17. Matheis, D. P., Misture, S. T. and Snyder, R. L., “Melt—Texture Processing and High-Temperature Reactions of Bi-2212 Thick Films,” Physica C 217 [3&4] 319325 (1993).
18. Snyder, R. L., “The Use of Reference Intensity Ratios in X-ray Quantitative Analysis,” Powder Diffraction, 7[4] 186193 (1992).


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