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首页> 外文会议>Workshop on synthesis characterization and applications of inorganic powders >Optimization for Preparation of High Density Alumina Ceramics with Ultrafine-Grained Structure by a Fast Sintering Method
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Optimization for Preparation of High Density Alumina Ceramics with Ultrafine-Grained Structure by a Fast Sintering Method

机译：用快速烧结法制备超细粒化结构的高密度氧化铝陶瓷的优化

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摘要

The preparation of ultrafine-grained alumina ceramics by the fast sintering technique Self-propagating High-temperature Synthesis plus Quick Pressing (SHS-QP) method was reported.The reaction heat generated by combustion reaction was applied to act as a high temperature source.An alumina compact was loaded inside the combustion reactants,which form a “SHS-furnace”,and great mechanical pressure was applied when the temperature reached the maximum.Dense ultrafine-grained alumina ceramic was prepared using a lower heating rate (900 °C/min),and the effects of sintering time,and pressure on the densification and grain size were discussed.Within a short sintering time of 3 min,full-density alumina ceramics with ultrafine-grained structure are obtained under a pressure of 120 MPa.
机译：报道了通过快速烧结技术制备超细粒化氧化铝陶瓷，自展开高温合成加快压制（SHS-QP）方法。施加燃烧反应产生的反应热量作为高温源。在燃烧反应物内装载氧化铝结构，该燃烧反应物形成“SHS-炉”，当温度达到最大的加热速率时，当温度达到最大的超细颗粒氧化铝陶瓷时施加了很大的机械压力（900℃/ min ）讨论了烧结时间和压力对致密化和晶粒尺寸的影响。在短的烧结时间为3分钟，在120MPa的压力下获得具有超细凝聚结构的全密度氧化铝陶瓷。

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