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A personal computer (PC)-based version of Phase Diagrams for Ceramists has been demonstrated by the joint National Bureau of Standards (NBS)/American Ceramic Society (ACerS) Phase Diagrams for the Ceramists Data Center. A selection of phase diagrams from the nearly 1100 diagrams of Volume 6 has been transferred from the Data Center's graphics workstations to a PC. Demonstration software has been developed for retrieving and plotting the phase diagrams on the PC's monitor from the PC-based Phase Diagram Data Base. In addition, the software allows the operator to retrieve data from the diagram by means of an interactive graphics cursor whose location is displayed digitally on the monitor in a choice of user units (for example, °C, °F, K). Areas of the phase diagram can be magnified and replotted to clarify features. The operator can also overlay a second diagram for comparison purposes, reverse the diagram, magnify or rescale the diagram, and apply an electronic lever rule or curve-tracking mode. Future refinements include conversions between weight and mole percent and retrieval of ternary or higher-order phase diagrams.
data base, phase diagrams, personal computer (PC), graphics, ceramics, digitizing software, chemical data bases
Physicist, National Institute for Standards and Technology, Gaithersburg, MD
National Institute for Standards and Technology, Gaithersburg, MD