Gasification is a high temperature/pressure chemical process used to convert a carbon feedstock into CO and H_2 for use in power generation and the production of chemicals. It is also a leading candidate as a source of hydrogen in a hydrogen economy. Impurities in the carbon feedstock liquefy during gasification, forming a slag which attacks the high chrome oxide refractory liner, eventually leading to lining failure. The failure occurs through two major wear mechanisms - 1) chemical dissolution, and 2) spalling (structural and chemical). A combination of microstructural analysis and thermodynamics is used to explain refractory/slag interactions caused by molten slag.
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