Design of long-term ablation protective Zr0.92Ta0.04Si0.04O2 coating via large lattice distortion and limited phase precipitation
Source abstract
Abstract
Thermally sprayed Zr-Ta-Si-O coatings were investigated to overcome the oxygen blocking limitations of traditionally self-derived porous ZrO 2 layer. The individual solid solution of Ta and Si into ZrO 2 lattice was respectively found trapped in the rapid phase precipitation and volatile loss, thus exhibiting insufficient ablation property. The as-designed Zr 0.92Ta 0.04Si 0.04O 2 coating successfully acquired a near-zero linear recession rate (-0.10 μm/s) after 900 s cyclic ablation (2.4 MW/m 2, 15 cycles). Key reasons can be attributed to a continuous sintering promotion and secondary phase precipitation limitation via large lattice distortion, where that of Zr 7/8Ta 1/16Si 1/16O 2 lattice exhibits over 200 % increase than Zr 7/8Ta 1/8O 2 lattice.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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