The Experts below are selected from a list of 219 Experts worldwide ranked by ideXlab platform
Gregory E Hilmas - One of the best experts on this subject based on the ideXlab platform.
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reactive Hot Pressing of zirconium diboride
Journal of The European Ceramic Society, 2009Co-Authors: Adam L Chamberlain, William G Fahrenholtz, Gregory E HilmasAbstract:Abstract The reaction of zirconium and boron was investigated as a potential route to form dense monolithic zirconium diboride (ZrB2) ceramics. Attrition milling of the precursors produced nanosized (less than 100 nm) zirconium metal particles that reacted with boron to form ZrB2 with an average particle size of less than 100 nm at temperatures as low as 600 °C. Scanning electron microscopy of ZrB2 compacts heated to 1450 °C and 1650 °C showed average particle sizes of 0.6 μm and 1.0 μm, respectively, suggesting that the fine particle size was maintained during densification. Ceramics with a relative density of ∼99% were produced by Hot Pressing at 2100 °C. Dense ZrB2 produced by the reactive Hot Pressing process had mechanical properties that were comparable to ceramics produced by conventional processes. The four-point flexure strength of ZrB2 produced in this study was 434 MPa.
Adam L Chamberlain - One of the best experts on this subject based on the ideXlab platform.
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reactive Hot Pressing of zirconium diboride
Journal of The European Ceramic Society, 2009Co-Authors: Adam L Chamberlain, William G Fahrenholtz, Gregory E HilmasAbstract:Abstract The reaction of zirconium and boron was investigated as a potential route to form dense monolithic zirconium diboride (ZrB2) ceramics. Attrition milling of the precursors produced nanosized (less than 100 nm) zirconium metal particles that reacted with boron to form ZrB2 with an average particle size of less than 100 nm at temperatures as low as 600 °C. Scanning electron microscopy of ZrB2 compacts heated to 1450 °C and 1650 °C showed average particle sizes of 0.6 μm and 1.0 μm, respectively, suggesting that the fine particle size was maintained during densification. Ceramics with a relative density of ∼99% were produced by Hot Pressing at 2100 °C. Dense ZrB2 produced by the reactive Hot Pressing process had mechanical properties that were comparable to ceramics produced by conventional processes. The four-point flexure strength of ZrB2 produced in this study was 434 MPa.
E Gordo - One of the best experts on this subject based on the ideXlab platform.
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inductive Hot Pressing of titanium and titanium alloy powders
Materials Chemistry and Physics, 2012Co-Authors: Leandro Bolzoni, E M Ruiznavas, E Neubauer, E GordoAbstract:Abstract Inductive Hot-Pressing is a field-assisted sintering process (FAST) in which an electrical current is used to enhance the densification of the powder. Inductive Hot-Pressing could be employed to enable titanium powder to reach a higher density in less time than the Pressing and sintering process. In this study, titanium and titanium alloy powders with different features were processed by means of inductive Hot-Pressing. The influence of processing temperature on density, microstructure, quantity of interstitial elements and hardness was investigated. Generally, practically fully dense materials were obtained without any carbon pick-up, even if the materials were in contact with the graphite matrix during processing. Nevertheless, there was an increment of the nitrogen content and some oxygen pick-up, especially for the powders with smaller particle size. Hardness is not significantly affected by the Pressing temperature, but it strongly depends on the amount of interstitials.
William G Fahrenholtz - One of the best experts on this subject based on the ideXlab platform.
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reactive Hot Pressing of zirconium diboride
Journal of The European Ceramic Society, 2009Co-Authors: Adam L Chamberlain, William G Fahrenholtz, Gregory E HilmasAbstract:Abstract The reaction of zirconium and boron was investigated as a potential route to form dense monolithic zirconium diboride (ZrB2) ceramics. Attrition milling of the precursors produced nanosized (less than 100 nm) zirconium metal particles that reacted with boron to form ZrB2 with an average particle size of less than 100 nm at temperatures as low as 600 °C. Scanning electron microscopy of ZrB2 compacts heated to 1450 °C and 1650 °C showed average particle sizes of 0.6 μm and 1.0 μm, respectively, suggesting that the fine particle size was maintained during densification. Ceramics with a relative density of ∼99% were produced by Hot Pressing at 2100 °C. Dense ZrB2 produced by the reactive Hot Pressing process had mechanical properties that were comparable to ceramics produced by conventional processes. The four-point flexure strength of ZrB2 produced in this study was 434 MPa.
Wang Dong - One of the best experts on this subject based on the ideXlab platform.
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Research and Application Progress of Hot-Pressing Magnesium Fluoride Infrared Material
Bulletin of the Chinese ceramic society, 2020Co-Authors: Wang DongAbstract:Hot-Pressing magnesium fluoride is the most widely used material for infrared windows and dome.This paper provides an overview of the preparation methods and properties of Hot-Pressing magnesium fluoride,and summarizes the latest research and application progression in this field.Further evolution of Hot-Pressing magnesium fluoride is also put forward.
