PROCESSING OF TITANIA NANOCERAMICS VIA CONVENTIONAL SINTERING, TWO-STEP SINTERING AND TWO-STEP SINTERING ASSISTED BY PHASE TRANSFORMATION

Zohreh Razavi Hesabi; Mehdi Mazaheri

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PROCESSING OF TITANIA NANOCERAMICS VIA CONVENTIONAL SINTERING, TWO-STEP SINTERING AND TWO-STEP SINTERING ASSISTED BY PHASE TRANSFORMATION

机译：相变法辅助常规烧结，两步烧结和两步烧结法制备二氧化钛纳米陶瓷

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In the present study, the novel technique of two-step sintering was applied on TiO_2 ceramic nanopowder to suppress accelerated grain growth during densification. A dense, uniform and ultrafine-grain ceramics were hence fabricated at a temperature lower than that of the conventional methods. While the grain size of is ～2 μm for full dense structures produced by conventional sintering, application of two-step sintering has led to a remarkable grain size decline to -250 nm. Two-step sintering accompanied with anatase to rutile phase transformation led to formation of structure with an average grain size of ～ 100 nm.

机译：在本研究中，将新的两步烧结技术应用于TiO_2陶瓷纳米粉体，以抑制致密化过程中晶粒的加速生长。因此，在低于常规方法的温度下制造了致密，均匀且超细晶粒的陶瓷。对于常规烧结生产的全致密结构，虽然的晶粒尺寸约为〜2μm，但两步烧结的应用已导致晶粒尺寸显着下降至-250 nm。伴随锐钛矿到金红石相变的两步烧结导致平均晶粒尺寸约为100 nm的组织的形成。

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《Ceramic Engineering and Science Proceedings》 |2010年第9期|共7页
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Zohreh Razavi Hesabi; Mehdi Mazaheri;
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中图分类硅酸盐工业;陶瓷工业;
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机译：相变法辅助常规烧结，两步烧结和两步烧结法制备二氧化钛纳米陶瓷
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PROCESSING OF TITANIA NANOCERAMICS VIA CONVENTIONAL SINTERING, TWO-STEP SINTERING AND TWO-STEP SINTERING ASSISTED BY PHASE TRANSFORMATION

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