Structure-property relationship for sintered SiC by field assisted sintering technique

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Abstract

This research is focused on utilizing the field assisted sintering technique (FAST) to produce dense SiC ceramic tiles and examine the sintering behavior of SiC with changing temperature, hold time, pressure, and heating rate. A preprocessed SiC powder with carbon and boron carbide additives and a mean particle size of 0.9 μm were used to produce the SiC ceramic tiles. The sintered ceramic tiles were then characterized for material properties. Material properties were plotted as a function of processing parameter and optimum conditions were explored. Using the FAST process, this research showed that it was possible to sinter SiC in less than 30 min to near theoretical densities. There was also no processing of powder or green sintering of any kind. The sintered ceramic tiles were characterized and the results showed the relationship between density, microhardness, and grain-size with respect to FAST processing parameters such as temperature, pressure and hold-time. Understanding this relationship will make it possible to tailor the material properties to fit the needs of a given application.

Original languageEnglish (US)
Pages (from-to)33-39
Number of pages7
JournalInternational Journal of Refractory Metals and Hard Materials
Volume37
DOIs
StatePublished - Mar 1 2013

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Spark plasma sintering
Tile
Materials properties
Powders
Sintering
Processing
Boron carbide
Heating rate
Microhardness
Carbon
Particle size
Temperature

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "Structure-property relationship for sintered SiC by field assisted sintering technique",
abstract = "This research is focused on utilizing the field assisted sintering technique (FAST) to produce dense SiC ceramic tiles and examine the sintering behavior of SiC with changing temperature, hold time, pressure, and heating rate. A preprocessed SiC powder with carbon and boron carbide additives and a mean particle size of 0.9 μm were used to produce the SiC ceramic tiles. The sintered ceramic tiles were then characterized for material properties. Material properties were plotted as a function of processing parameter and optimum conditions were explored. Using the FAST process, this research showed that it was possible to sinter SiC in less than 30 min to near theoretical densities. There was also no processing of powder or green sintering of any kind. The sintered ceramic tiles were characterized and the results showed the relationship between density, microhardness, and grain-size with respect to FAST processing parameters such as temperature, pressure and hold-time. Understanding this relationship will make it possible to tailor the material properties to fit the needs of a given application.",
author = "Sean Gephart and Jogender Singh and Anil Kulkarni",
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AU - Gephart, Sean

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N2 - This research is focused on utilizing the field assisted sintering technique (FAST) to produce dense SiC ceramic tiles and examine the sintering behavior of SiC with changing temperature, hold time, pressure, and heating rate. A preprocessed SiC powder with carbon and boron carbide additives and a mean particle size of 0.9 μm were used to produce the SiC ceramic tiles. The sintered ceramic tiles were then characterized for material properties. Material properties were plotted as a function of processing parameter and optimum conditions were explored. Using the FAST process, this research showed that it was possible to sinter SiC in less than 30 min to near theoretical densities. There was also no processing of powder or green sintering of any kind. The sintered ceramic tiles were characterized and the results showed the relationship between density, microhardness, and grain-size with respect to FAST processing parameters such as temperature, pressure and hold-time. Understanding this relationship will make it possible to tailor the material properties to fit the needs of a given application.

AB - This research is focused on utilizing the field assisted sintering technique (FAST) to produce dense SiC ceramic tiles and examine the sintering behavior of SiC with changing temperature, hold time, pressure, and heating rate. A preprocessed SiC powder with carbon and boron carbide additives and a mean particle size of 0.9 μm were used to produce the SiC ceramic tiles. The sintered ceramic tiles were then characterized for material properties. Material properties were plotted as a function of processing parameter and optimum conditions were explored. Using the FAST process, this research showed that it was possible to sinter SiC in less than 30 min to near theoretical densities. There was also no processing of powder or green sintering of any kind. The sintered ceramic tiles were characterized and the results showed the relationship between density, microhardness, and grain-size with respect to FAST processing parameters such as temperature, pressure and hold-time. Understanding this relationship will make it possible to tailor the material properties to fit the needs of a given application.

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