Comparison of ablative and compressive mechanical behavior of several PICA-like ablative materials
Source abstract
Abstract
It is significant to compare the ablative and compressive mechanical behavior of different PICA-like materials in the engineering applications. The plasma wind tunnel ablation tests with high-entropy air and CO2 atmospheres, and compressive experiments in the ambient and 150°C, were conducted for three kinds of PICA-like materials (CF/PR-Si, CBCF/PR-SiOC and NQF/PR-Si composites). The traditional carbon/phenolic (C/PR) braided composites were also used for comparison. PICA-like materials have the better thermal insulation than traditional C/PR composite, especially for CBCF/PR-SiOC composite. The ablation behavior of CF/PR-Si and CBCF/PR-SiOC PICA-like materials in the CO2 atmosphere can produce a large amount of SiO2 in the form of coatings, oxide layers and skeletons on the ablated surface, which are greatly different from that in the air atmosphere. The compressive behavior of PICA-like material is greatly depended on the fiber fabrics, and exhibits the large discrete characteristics. The longer fiber in the PICA-like materials plays the role in maintaining the material integrity, while it may increase the thermal conductivity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Diamond and Carbon-based Materials Research · Gas Dynamics and Kinetic Theory · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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