By Richard J. M. Anderson, John C. Hamilton (auth.), John W. Hastie (eds.)
Conference assessment and the function of Chemistry in High-Temperature fabrics technology and expertise LEO BREWER division of ChemistIy, college of California, and fabrics and Chemical Sciences department, Lawrence Berkeley Laboratory, 1 Cyclotron street, Berkeley, CA 94720 i do not are looking to compete with the interesting ancient account that John Drowart gave us, yet i want to move in the course of the historical past of excessive do not get the response that i am getting from temperature symposia. i'm hoping I a few of my sessions whilst I say, "Remember whilst such-and-such hap pened in the course of the War?" and that i get this clean glance, and one of many scholars will say, "I wasn't born till after the Korean struggle. " Neverthe much less, in the course of global battle II, many folks within the high-temperature box had their first initiation. yet there has been one handicap. because of safety features, they weren't capable of engage with each other. Following the battle, it used to be well-known that the high-temperature box was once going to extend to fulfill the calls for for fabrics with designated houses. to satisfy the calls for for brand new fabrication concepts, it used to be very important to set up larger communications between a number of humans. High-tempera ture symposia have been tested at the moment and feature endured very usually, and i might wish to indicate why they're specifically very important for this box. One challenge is that it isn't effortless to paintings at excessive temperatures.
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Extra resources for Materials Chemistry at High Temperatures: Characterization
However, under cyclic loading, cracks in PSZ grow without cessation (13). Thus failure is somewhat analogous to fatigue-crack growth in metals. The mechanism of crack growth under cyclic load is not fully understood and is being investigated. Raman spectroscopy utilizing the two-dimensional detector and techniques described above can be used to map the transformed zone (14). A semi-automated experimental setup yields the fraction of monoclinic phase relative to the sum of the monoclinic and tetragonal phases, determined from the Raman spectrum, as a function of distance across the surface of the specimen.
J. Chern. Phys. 76, 710 (1982). 13. , and Yates, }. , Surf. , in press (1989). 14. , and Latta, E. , Surf. Sci. 57,475 (1976). 15. , J. Chern. Phys. 66, 5269 (1977). 16. , J. Chern. Phys. 60, 4719 (1974). Investigations of Materials at High Temperatures Using Raman Spectroscopy K. F. MCCARTY Sandia National Laboratories, Livermore, CA 94551-0969 ABSTRACT This paper will give a brief overview of the use of Raman spectroscopy to investigate materials at high temperatures. The first section describes the apparatus and experimental techniques necessary for in situ, high-temperature measurements.
2. Raman spectra of the carbon overcoats on magnetic media disks from two different manufacturers. Samples K1, K5, and K2 were sectioned from the same disk and annealed at 30,350, and 450°C, respectively. The data and fit, comprised of two peaks and a background (not shown), are shown for the four samples. 54 5 2 0 0 350 450 1562 1571 1575 1575 176 160 140 159 l393 1391 1386 1372 347 349 335 300 'The percentage of Sp3 bonding is obtained from the shift of the G-band. 5 for 2 nm grains, followed by a decrease in IdlIg (similar to that observed with coarser carbon (7» as the grains grow further.