Understanding of the high-speed sintering mechanisms and improvement of the technical construction in the pulsed-current-sintering (PCS) processing

脉冲电流烧结（PCS）加工中高速烧结机理的理解和技术建设的改进

• 批准号: 22560675
• 负责人: MORITA Koji
• 金额: $ 2.91万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560675/
• 关键词: パルス通電焼結; 構造用セラミックス; スピネル; 透光性; パルス通電焼結（PCS）; 酸化物セラミックス; 焼結機構; パルス効果; パルス通電焼結(PCS); パルス通電焼結法; 焼結; 通電効果; クリープ

In order to achieve an advanced pulsed-current-sintering (PCS) technique, this work was performed to understand the sintering mechanisms and to clarify the effect of the sintering parameters, such as heating rate, sintering temperature, dwelling time, loading schedule and so on, on PCS processing of MgAl2O4 spinel. It is found that the sintering behavior changes sensitively with the parameters and dense fine-grained ceramics can be fabricated by carefully optimizing the parameters. Loading at high temperatures, for example, can attain high density spinel even at a high heating rate of 100°C/min, and hence, can save the total processing time.

为了实现先进的脉冲电流烧结(PCS)技术，本论文研究了尖晶石脉冲电流烧结的烧结机理，研究了升温速率、烧结温度、保温时间、加载制度等工艺参数对尖晶石脉冲电流烧结的影响。结果表明，陶瓷的烧结行为随工艺参数变化较为敏感，通过对工艺参数的精心优化，可以制备出致密的细晶陶瓷。例如，在高温下加载，即使在100°C/min的高加热速度下也可以获得高密度的尖晶石，因此可以节省总的加工时间。

项目成果

Fabrication of high-strength transparent MgAl2O4 by optimizing spark-plasma-sintering (SPS) conditions

通过优化放电等离子烧结 (SPS) 条件制备高强度透明 MgAl2O4

• 发表时间: 2011
• 作者: Junta Zushi;Takuma Ariizumi;Seiji Kojima;Ruiping Wang;and Hiroshi Bando;Koji Morita
• 通讯作者: Koji Morita

Densification Mechanism of MgAl2O4 Spinel during Spark-Plasma-Sintering

MgAl2O4尖晶石放电等离子体烧结致密化机理

• 发表时间: 2010
• 期刊: Advances in Science and Technology
• 作者: Koji Morita;et al
• 通讯作者: et al

Optimum Spark-Plasma-Sintering (SPS) Condition for Attaining Transparent MgAl2O4 Spinel Polycrystal

获得透明 MgAl2O4 尖晶石多晶的最佳火花等离子体烧结 (SPS) 条件

• 发表时间: 2010
• 作者: K. Morita;B.-N. Kim;H. Yoshida;K. Hiraga
• 通讯作者: K. Hiraga

Highly Infrared Transparent Nanometric Tetragonal Zirconia Prepared by High‐Pressure Spark Plasma Sintering

• DOI: 10.1111/j.1551-2916.2011.04680.x
• 发表时间: 2011-09
• 期刊: Journal of the American Ceramic Society
• 影响因子: 3.9
• 作者: Haibin Zhang;Zhipeng Li;Byung‐Nam Kim;K. Morita;H. Yoshida;K. Hiraga;Y. Sakka

Effects of Preheating of Powder Before Spark Plasma Sintering of Transparent MgAl2O4 Spinel

• DOI: 10.1111/j.1551-2916.2010.03699.x
• 发表时间: 2010-08-01
• 期刊: JOURNAL OF THE AMERICAN CERAMIC SOCIETY
• 影响因子: 3.9
• 作者: Kim, Byung-Nam;Morita, Koji;Yoshida, Hidehiro
• 通讯作者: Yoshida, Hidehiro