Fabrication of Al2O3-ZrO2 Nano-Ceramics by HIP

Journal of Inorganic Materials

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Fabrication of Al₂O₃-ZrO₂ Nano-Ceramics by HIP

GAO Lian; MIYAMOTO Hiroki⁺

State Key Lab on High Performance Ceramics and Saperfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China;⁺Technology Research Institute of Osaka Prefecture Osaka 594-1157 Japan

Received:1998-06-19 Revised:1998-07-08 Published:1999-06-20 Online:1999-06-20

Abstract

Abstract: Co-precipitation methods were used to produce 20 mol% Al₂O₃-ZrO₂ powder, from aqueous solutions of zirconium
oxychloride and aluminium chloride, followed by precipitation with ammonia. The resulting gel was calcined at 750℃. The prepared powder was sintered at 1000℃ for 1 h under
200 MPa by using the hot isostatic pressing technique. TEM micrograph showed that the average grain size of the sintered body was only about
50 nm. XRD analysis on the polished surface indicated the phase composition of the nano-ceramics was 55% t-ZrO₂-39% m-ZrO₂-6%
α-Al₂O₃.

Key words: nano-ceramics, HIP, Al₂O₃-ZrO₂

CLC Number:

TB323

GAO Lian,MIYAMOTO Hiroki. Fabrication of Al₂O₃-ZrO₂ Nano-Ceramics by HIP[J]. Journal of Inorganic Materials.

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Fabrication of Al₂O₃-ZrO₂ Nano-Ceramics by HIP

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