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首页> 外文会议>Powder Metallurgy World Congress amp; Exhibition(PM 2006); 20060924-28; Busan(KR) >Synthesis and Densification of Nanostructured AI_2O_3-(Zro_2+3Mol Y_2O_3) Bioceramics by High-Frequency Induction Heat Sintering
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Synthesis and Densification of Nanostructured AI_2O_3-(Zro_2+3Mol Y_2O_3) Bioceramics by High-Frequency Induction Heat Sintering

机译：高频感应加热烧结合成纳米结构的AI_2O_3-（Zro_2 + 3％mol Y_2O_3）生物陶瓷

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摘要

Nanostructured Alumina - 20 vol% 3YSZ composites powder were synthesized by wet-milling technique. The starting materials were a mixture of Alumina micro-powder and 3YSZ nano-powders. Nano-crystalline grains were obtained after 24 h milling time. The nano-structured powder compacts were then processed to full density at different temperatures by high-frequency induction heat sintering (HFIHS). Effects of temperature on the mechanical and microstructure properties have been studied. Al_2O_3-3YSZ composites with higher mechanical properties and small grain size were successfully developed at relatively low temperatures through this technique. The samples were densified by heating to a sintering temperature in the range of 1100 to 1400 ℃, and then fast cooled to 500 ℃ within short time. A relative density of up to 99% theoretical density of the composites was achieved after sintering at 1370 ℃.
机译：通过湿磨法合成了纳米结构的氧化铝-20 vol％3YSZ复合粉末。起始原料是氧化铝微粉和3YSZ纳米粉的混合物。研磨24小时后获得纳米晶粒。然后通过高频感应热烧结（HFIHS）在不同温度下将纳米结构粉末压块加工至全密度。研究了温度对机械和微观结构性能的影响。通过该技术，在较低的温度下成功地开发了具有较高机械性能和较小晶粒尺寸的Al_2O_3-3YSZ复合材料。通过加热至1100至1400℃的烧结温度来致密化样品，然后在短时间内快速冷却至500℃。在1370℃烧结后，复合材料的相对密度达到理论密度的99％。

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