POLYMER-COATED BLADE WITH ABRASIVE TIP
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United States of America Patent
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Issued Date -
Jun 27, 2019
app pub date -
Feb 27, 2019
filing date -
Feb 27, 2019
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Abstract
A friction interface in a gas turbine engine includes an abradable component, such as a seal, and an abrasive component, such as a blade tip, in rubbing contact with each other. The abradable component is composed of a polymer matrix composite and the abrasive component is composed of a metal matrix with hard particles dispersed through the metal matrix. The metal matrix is an aluminum alloy and the hard particles are selected from oxides, nitrides, carbides, oxycarbides, oxynitrides, diamond and combinations thereof.
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