Processing of polymer‐derived, aerogel‐filled, SiC foams for high‐temperature insulation
Abstract
Porous polymer‐derived ceramics (PDCs) are outperforming materials when low‐density and thermal inertia are required. In this frame, thermal insulating foams such as silicon carbide (SiC) ones possess intriguing requisites for aerospace applications, but their thermal conductivity is affected by gas phase heat transfer and, in the high temperature region, by radiative mechanisms. Owing to the versatility of the PDC route, we present a synthesis pathway to embed PDC SiC aerogels within the open cells of a SiC foam, thus sensibly decreasing the thermal conductivity at 1000°C from 0.371 W·m−1K−1 to 0.243 W·m−1K−1. In this way, it was possible to couple the mechanical properties of the foam with the insulating ability of the aerogels.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 08, 2023
- Source ID
- 10.1111/jace.19118
Entities
People
- Andrea Zambotti
- Balanand Santhosh
- Cekdar Vakıf Ahmetoğlu
- Domenico Caputo
- Emanuel Ionescu
- Gian Domenico Sorarù
- Mattia Biesuz
- Nicola Gargiulo
Organizations
- Air Force Office of Scientific Research
- Consiglio Nazionale delle Ricerche
- Technical University of Darmstadt
- University of Naples Federico II
- University of Trento
- İzmir Institute of Technology