Exploring feasibility of preparing high-temperature absorbing materials with SiCN nanopowder and BaO-La₂O₃-B₂O₃ glass

There are tempting advantages for using SiCN as absorber and BaO-La₂O₃-B₂O₃ glass as matrix material to prepare high-temperature absorbing material needed by stealth technology. We present the results of exploring the feasibility of so preparing high-temperature absorbing material. In the paper, we explain in detail the results of our exploration including experiments, results and discussion. The preparation of glass coats and the determination of material properties, the characteristic temperature and other properties of glass, tensile strength of coat , and fractograph and the microstructure of interface are discussed. The test results show that the tensile strength of coat without SiCN is much higher than with more or less SiCN and that the tensile strength of absorbing coat worsens with increasing concentration, due possibly to the aggregating of SiCN in the coat; under subtopic 2.3, a photograph of the microstructure of the interface, appears to indicate that breakage occurs first within the coat and then at the interface of Ti alloy plate and coat, indicating that the bond strength of interface is higher than that of coat. The results of our exploration show preliminarily that it is feasible to prepare high-temperature absorbing material with SiCN as absorber and BaO-La₂O₃-B₂O₃ glass as matrix material.