| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5359101 | Applied Surface Science | 2015 | 7 Pages |
•A dense and seamless ZrSiO4–SiBCN(O) amorphous coating is prepared by low-cost slurry method at 1573 K.•The polyborosilazane (PBSZ)–ethanol solution as the precursor can reduce the sintering temperature and improve its densification.•It shows high oxidation protecting performance at 1773 K for 8 h.•By introducing the ZrSiO4 particles into the SiBCN(O) amorphous coating, the propagation of micro-cracks during its oxidation process is prominently inhibited.
In this paper, a dense and seamless SiBCN(O) amorphous coating with a few ZrSiO4 particles is prepared by low-cost slurry method and sintered at 1573 K, namely ZrSiO4–SiBCN(O) amorphous coating. During its preparation process, by employing the polyborosilazane (PBSZ)–ethanol solution as the precursor, the sintering temperature of the coating is significantly reduced and its densification is greatly improved as well. The coating was heat-treated in stagnant laboratory air at 1773 K from 5 min to 8 h. It shows high oxidation protecting performance during oxidation and the oxidation mechanism includes three stages, that are active oxidation, defection healing and oxygen diffusion at 1773 K. It was also found that, by introducing the ZrSiO4 particles into the SiBCN(O) amorphous coating, the propagation of micro-cracks during its oxidation process is prominently inhibited.
