Environmental reliability and crack propagation resistance of 3d-printed ALD-coated nano-ceramics
October 2 – 7, 2022
3D-printed micro- and nano-architected ceramic metamaterials currently emerge as a class of lightweight materials with exceptional strength and stiffness. However, their application is hampered by the lack of knowledge of their mechanical reliability. Recently, the sensitivity of nano-ceramics’ crack propagation resistance to environmental conditions, triggered by the unavoidable presence of surface flaws introduced by the TPP-DLW 3D printing and pyrolization post-processing, has been evidenced , with a reduction of 20% in the average fracture toughness value reported at high relative humidity levels of testing (𝑅𝐻 60%) from the generally performed low-humidity-based testing.
Please click Download on the upper right corner to see the full abstract.
Marco Sebastiani, Edoardo Rossi, and Jens Bauer, "Environmental reliability and crack propagation resistance of 3d-printed ALD-coated nano-ceramics" in "Nanomechanical Testing in Materials Research and Development VIII", Sandra Korte-Kerzel, RWTH Aachen University, Germany Eds, ECI Symposium Series, (2022). https://dc.engconfintl.org/nanomechtest_viii/96