Kim, S.-W. Kim, S.Y. 2024-01-12T07:56:02Z 2024-01-12T07:56:02Z 2022-03-07 2006-09 1012-0394 https://pubs.kist.re.kr/handle/201004/81574 The effect of phase transformation and fine particle dispersion on densification behavior of high purity nanocrystalline alumina was investigated. The γ/α phase ratio of the mixture compacts were affected detrimentally by sinterability and phase transformation of α-phase alumina ceramics. The densification was significantly deteriorated with increasing γ-phase owing to faceted pores which are caused by the formation of a colony. The faceted pores were not existed in the α-Al2O 3 ceramics with 10% γ-phase. Densification of the 10% γ-phase dispersed α-Al2O3 ceramics was significantly enhanced by rapid transformation of α-alumina. The grain growth was effectively inhibited by a small amount of nanoparticle dispersion for the alumina ceramics. As a result, dense nano structured alumina can be achieved in the 10% γ-phase dispersed α-Al2O3 ceramics, even sintering at 1400°C for 3 hours. English Materials Research Society Effect of phase transformation and fine particle dispersion on densification of high purity nanocrystalline γ-phase dispersed α-alumina Conference 10.4028/3-908451-31-0.831 1 IUMRS International Conference in Asia 2006, IUMRS-ICA 2006, pp.831 - 834 IUMRS International Conference in Asia 2006, IUMRS-ICA 2006 831 834 US Jeju 2006-09-10 Solid State Phenomena 2-s2.0-38549083761