Laminated carbon-carbon composites can be used as an ablative material, but they are often prone to delamination under thermally induced interlaminar shear and tension. Graded carbon-carbon composites with a sacrificial or ablative layer that is integral with one or more underlying layers and not fully dense can address these issues and provide other advantages. Such graded carbon-carbon composites can include a densified base layer containing a first portion of a carbonaceous matrix, and an outer ablative layer that is integral with the densified base layer and contains a second portion of the carbonaceous matrix. The carbonaceous matrix in the densified base layer has a first porosity, and the carbonaceous matrix in the outer ablative layer has a second porosity that is higher than that of the densified base layer. Methods for forming graded carbon-carbon composites can include heating a partially densified base layer and a carbonaceous matrix precursor above a carbonization temperature.


    Access

    Download


    Export, share and cite



    Title :

    Graded carbon-carbon composites with an integral ablative layer and methods for production thereof


    Contributors:

    Publication date :

    2019-09-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS / C04B Kalk , LIME



    Hybrid Carbon-Carbon Ablative Composites for Thermal Protection in Aerospace

    Sanoj, P. / Kandasubramanian, Balasubramanian / Shen, Hui-Shen | Tema Archive | 2014


    Carbon Ablative Shock-Layer Radiation with High Surface Temperatures

    Lewis, Steven W. / James, Christopher M. / Morgan, Richard G. et al. | AIAA | 2016




    Comparison of Carbon Ablative Shock-Layer Radiation with High Surface Temperatures

    Lewis, Steven W. / Morgan, Richard G. / Mcintyre, Tim J. et al. | AIAA | 2015