Investigation of cracking mechanisms of plasma sprayed alumina-13% titania by acoustic emission

C. K. Lin, S. H. Leigh, R. V. Gansert, K. Murakami, S. Sampath, H. Herman, C. C. Berndt

研究成果: 書貢獻/報告類型會議貢獻

2 引文 斯高帕斯(Scopus)


Free standing alumina-13% titania samples were manufactured using high power water stabilized plasma spraying. Heat treatment was performed at 1450°C for 24 hours and then at 1100°C for another 24 hours. Four point bend tests were performed on the as-sprayed and heat-treated samples in both cross section and in-plane orientations with in situ acoustic emission monitoring to monitor the cracking during the tests. Catastrophic failure with less evidence of microcracking was observed for as-sprayed samples. Energy and amplitude distributions were examined to discriminated micro- and macro-cracks. It was found that the high energy (> 100) and high amplitude (say > 60 dB) responses can be characterized as macro-cracks. Physical models are proposed to interpret the AE responses under different test conditions so that the cracking mechanisms can be better understood.
主出版物標題Materials Research Society Symposium - Proceedings
發行者Materials Research Society
出版狀態已發佈 - 1996
事件Proceedings of the 1995 MRS Fall Symposium - Boston, MA, USA
持續時間: 11月 27 199511月 30 1995


其他Proceedings of the 1995 MRS Fall Symposium
城市Boston, MA, USA

ASJC Scopus subject areas

  • 電子、光磁材料


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