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Tailored oxidation barrier coatings for Mo-Hf-B and Mo-Zr-B alloys
[article]
2021
he cyclic oxidation response of Mo-14Hf-23B and Mo-14.8Zr-26B (compositions in at. %) was investigated in air at 800 ◦C, which is a critical temperature for Mo-based alloys because of the pesting phenomenon. Rapid oxidation was observed for the unprotected samples, and an oxidation protection coating was developed based on a preceramic polymer with silicon and boron as particulate fillers. Cyclic oxidation tests of the coated samples showed excellent oxidation protection: no Mo, Hf or Zr oxides
doi:10.25673/36549
fatcat:pwe35qed6vbjfcoxdpqs2s36yi