Zr-Si-B-O biomimetic glass film

Self-healing oxygen barrier

A flowable, self-healing glass film applied on ZrB2-SiC coatings that significantly suppresses oxidation during the initial active oxidation stage, with a protection efficiency up to 99.97%.

Wang Peipei · 80230845 · Ji Xiang · Zhang, Sheng · Bai, Yuhang · Luo, Huan · Wu, Yuhao · Zhao, Xing · Hou, Zhaoqi · Feng Peizhong · Ren Xuanru

Ceramics International 2026

Specifications

Oxidation weight gain

{'zh': '0.081×10⁻²', 'en': '0.081×10⁻²'} g·cm⁻²

Protection efficiency

{'zh': '99.97', 'en': '99.97'} %

Carbon loss rate

{'zh': '0.34×10⁻⁶', 'en': '0.34×10⁻⁶'} g·cm⁻²·s⁻¹

Oxygen permeability

{'zh': '0.35', 'en': '0.35'} %

Advantages

Suppresses initial oxidation

The pre-formed flowable, self-healing glass layer prevents intense oxidation of the coating at the initial stage.

95.35% lower weight gain

After oxidation at 600-1600°C, weight gain is only 0.081×10⁻² g·cm⁻², 95.35% lower than uncoated sample.

99.97% protection at 1700°C

After oxidation at 1700°C, protection efficiency reaches 99.97%, with carbon loss rate only 0.34×10⁻⁶ g·cm⁻²·s⁻¹.

Applications

• ultra-high temperature ceramic coatings：Applied on ZrB2-SiC ultra-high temperature ceramic coatings to prevent early-stage oxidation failure.
• oxidation-resistant protective layers：Serves as an oxidation-resistant protective layer, forming an oxygen barrier at high temperatures to protect the substrate.
• hypersonic thermal protection：Can be used in hypersonic thermal protection systems to suppress thermal oxidation damage.
• high-temperature component protection：Suitable for protecting high-temperature components and prolonging service life in oxidizing environments.