著者

北澤 宏一 船橋 洋一

出版者

公益財団法人 日本学術協力財団

雑誌

学術の動向 (ISSN:13423363)

巻号頁・発行日

vol.18, no.8, pp.8_26-8_33, 2013-08-01 (Released:2013-12-06)

参考文献数

2

著者

北澤 宏一

出版者

公益社団法人 応用物理学会

雑誌

応用物理 (ISSN:03698009)

巻号頁・発行日

vol.67, no.8, pp.929-931, 1998-08-10 (Released:2009-02-05)

参考文献数

4

著者

北澤 宏一

出版者

社団法人 日本セラミックス協会

雑誌

Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) (ISSN:09145400)

巻号頁・発行日

vol.108, no.1259, pp.S61-S74, 2000-07-01 (Released:2010-08-06)

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The 1950's and 60's were the decades when the field of traditional ceramics was brought under the light of analytical physical science. Especially sintering process of ceramics, which had been a matter of extreme complexity, was basically understood in terms of the atomistic diffusion process occurring in the bulk and/or on the interface of the coagulated body of the powder. On the extension a high temperature mechanical property, creep, was understood on a similar basis. The knowledge developed led to the discovery of highly dense sintered ceramics, now widely known as translucent ceramics.The author started his career as a ceramist in late 60th when the understanding of sintering kinetics needed further elaboration. One of the apparent contradiction at the time was the fact that the faster diffusing species, i.e., cation in oxides was the rate determining one in the sintering process. There should be some process that enhances the diffusion process of oxygen. Gradually the importance of surface and grain boundary diffusion was paid attention. This review was written by the author in order to summarize many papers, appearing in those days and to establish the systematic view on those studies. He described how various processes involve the ionic diffusion and how grain boundary diffusion affects the processes based on the concept of the ambipolar diffusion. Starting from the accumulated knowledge in the metal and alkali halides as the simple model for ceramic materials, he related the scattered knowledge into a consolidated view that could be applied to ceramics.In relation to this review he wrote additional reviews on “Diffusion Coefficient of Point Defects in Oxides” Yogyo-Kyokai-Shi, Vol. 87, No. 3, 36-42 (1979), and on “Kinetics of Various Mass Transport Processes on the Solid Surfaces, ” Oyo-Butsuri, Vol. 49, No. 6, 579-585 (1980) which in combination still form the basis of the current understanding of the field.

著者

北澤 宏一

出版者

社団法人日本化学会

雑誌

化学と教育 (ISSN:03862151)

巻号頁・発行日

vol.57, no.5, pp.220-221, 2009-05-20

著者

北澤 宏一

出版者

丸善

雑誌

パリティ (ISSN:09114815)

巻号頁・発行日

vol.26, no.10, pp.40-42, 2011-10