Yazar "Thompson, D. P." için listeleme
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alpha ->beta sialon transformation in calcium-containing alpha-SiAlON ceramics
Mandal, Hasan; Thompson, D. P. (Elsevier Sci LTD, 1999)Recent studies on rare earth densified a-sialon ceramics have shown that the resulting alpha-sialon product, present either as a single phase or in conjunction with beta-sialon, is unstable when heat treated at lower ... -
CeO2-doped ?-sialon ceramics
Mandal, Hasan; Thompson, D. P. (Springer Netherlands, 1996)[No abstract available] -
The driving force for ??ß transformation in rare earth ? sialon ceramics
Mandal, Hasan; Thompson, D. P. (1997)In-situ ??ß sialon transformation in rare earth sialon systems, which occurs when dense ?- and ?/ß-sialon samples are heat-treated at temperatures in the range 1300-1600°C was first observed five years ago, and has generated ... -
The effect of heat-treatment on the performance of submicron SiCp-reinforced ?-ß sialon composites: III. Mechanical properties
Liu, Q.; Gao, L.; Yan, D. S.; Mandal, Hasan; Thompson, D. P. (Elsevier BV, 1997)Agglomerate-free SiCp-reinforced Ln-sialon (Ln=Nd and Yb) composites were fabricated by hot-pressing and by pressureless sintering to evaluate the improvement in microstructure and mechanical properties that could be ... -
Effect of starting composition, type of rare earth sintering additive and amount of liquid phase on ? ? ß sialon transformation
Camuşcu, N.; Thompson, D. P.; Mandal, Hasan (1997)Five different ?-ß sialon and ?-sialon compositions have been prepared using different rare earth oxide additives namely, neodymium, samarium, dysprosium and ytterbium. Post-sintering heat treatments have been carried out ... -
New heat treatment methods for glass removal from silicon nitride and sialon ceramics
Mandal, Hasan; Thompson, D. P. (Kluwer Academic Publ, 2000)Sialon ceramics were discovered simultaneously (but independently) in late 1971 at Newcastle University and also at the Toyota Research Laboratories in Japan. During the 30 years since their original discovery, the Newcastle ... -
Optimization and improvement of sialon ceramics with new heat treatment techniques
Mandal, Hasan; Thompson, D. P. (1997)Sialons are of interest for use as engineering materials for high temperature (>1000°C) applications becuase they retain good mechanical properties at these temperatures, whereas competing metallic materials are weak and ... -
Preparation of Ce and Nd ß-sialon ceramics by ? › ß sialon transformation
Thompson, D. P.; Mandal, Hasan (1997)It has previously been accepted that lanthanum and cerium do not form ?-sialon structures because their ions are too large to enter the interstices in the structure. Recent work on heat treatment of rare earth densified ... -
Thermal stability of rare earth densified ?-sialon ceramics
Mandal, Hasan; Thompson, D. P. (1997)Typical ?-sialon and mixed ?-ß sialon starting compositions were densified by either hot pressing or pressureless sintering using the oxides of Yb, Dy, Sm and Nd. The resulting materials were heat-treated at 1450°C for up ... -
?ݧ Sialon Transformation in Calcium-containing ? -SiAlON Ceramics
Mandal, Hasan; Thompson, D. P. (1999)Recent studies on rare earth densified ?-sialon ceramics have shown that the resulting ?-sialon product, present either as a single phase or in conjunction with ß-sialon, is unstable when heat treated at lower (1350-1600°C) ...
