High temperature alkali corrosion of ceramics in coal gas: Final report

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Description

There are several ceramic materials which are currently being considered for use as structural elements in coal combustion and coal conversion systems because of their thermal and mechanical properties. These include alumina (refractories, membranes, heat engines); silicon carbide and silicon nitride (turbine engines, internal combustion engines, heat exchangers, particulate filters); zirconia (internal combustion engines, turbine engines, refractories); and mullite and cordierite (particulate filters, refractories, heat exchangers). High temperature alkali corrosion has been known to cause premature failure of ceramic components used in advanced high temperature coal combustion systems such as coal gasification and clean-up, coal fired gas turbines, and high ... continued below

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137 p.

Creation Information

Pickrell, G.R.; Sun, T. & Brown, J.J. Jr. December 31, 1994.

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Description

There are several ceramic materials which are currently being considered for use as structural elements in coal combustion and coal conversion systems because of their thermal and mechanical properties. These include alumina (refractories, membranes, heat engines); silicon carbide and silicon nitride (turbine engines, internal combustion engines, heat exchangers, particulate filters); zirconia (internal combustion engines, turbine engines, refractories); and mullite and cordierite (particulate filters, refractories, heat exchangers). High temperature alkali corrosion has been known to cause premature failure of ceramic components used in advanced high temperature coal combustion systems such as coal gasification and clean-up, coal fired gas turbines, and high efficiency heat engines. The objective of this research is to systematically evaluate the alkali corrosion resistance of the most commonly used structural ceramics including silicon carbide, silicon nitride, cordierite, mullite, alumina, aluminum titanate, and zirconia. The study consists of identification of the alkali reaction products and determination of the kinetics of the alkali reactions as a function of temperature and time. 145 refs., 29 figs., 12 tabs.

Physical Description

137 p.

Notes

OSTI as DE95011387

Source

  • Other Information: PBD: 31 Dec 1994

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  • Other: DE95011387
  • Report No.: DOE/PC/91309--T14
  • Grant Number: FG22-91PC91309
  • DOI: 10.2172/61097 | External Link
  • Office of Scientific & Technical Information Report Number: 61097
  • Archival Resource Key: ark:/67531/metadc698249

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  • December 31, 1994

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  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 20, 2015, 8:48 p.m.

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Pickrell, G.R.; Sun, T. & Brown, J.J. Jr. High temperature alkali corrosion of ceramics in coal gas: Final report, report, December 31, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc698249/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.