Methods of repairing matrix cracks in melt infiltrated ceramic matrix composites
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United States of America Patent
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Jul 11, 2017
Grant Date -
Apr 30, 2015
app pub date -
Oct 30, 2013
filing date -
Oct 30, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A method of repairing matrix microcracks in MI-CMC components includes heating “free” silicon phase present within the cracked matrix portion of the component to a temperature above the melting point of the silicon phase. During heating of the component an additional source of silicon phase is supplied to the component. The atmosphere about the component is controlled during the heating of the component. The MI-CMC component is cooled below the melting point of the silicon phase to cool and solidify the silicon phase that has migrated into the microcracks to thereby bond the crack faces together.
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International Classification(s)
- C03B:MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR ....
- B23P:OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVE....
- C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B65C:LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCE....
- F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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