著者

松井 裕樹 松永 洋介

出版者

岐阜大学

雑誌

岐阜大学教育学部研究報告. 教育実践研究 (ISSN:13447718)

巻号頁・発行日

vol.15, pp.21-30, 2013

著者

吉田 英生 石部 英臣 松井 裕樹 江川 猛 吉冨 聡 桑原 健雄 齋藤 元浩

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集

巻号頁・発行日

vol.2004, pp.351-352, 2004

---

A hybrid gas bearing with water evaporation from ultra-fine porous medium is newly proposed. The proposed bearing is considered to be applied to microturbines and have mainly three advantages suitable for the applications. The first is the stability improved by water evaporation from ultra-fine porous medium. The second is the effective lubrication by liquid water at start and stop of the journal rotation. The third is the cooling effect on the high-temperature journal due to water evaporation. A preliminary experiment is conducted, and the stable start and stop of the journal rotation are confirmed.

著者

松井 裕樹 松永 洋介 マツイ ヒロキ マツナガ ヨウスケ MATSUI Hiroki MATSUNAGA Yousuke

出版者

岐阜大学教育学部

雑誌

岐阜大学教育学部研究報告. 人文科学 = Annual report of the Faculty of Education, Gifu University. 岐阜大学教育学部 編 (ISSN:02865556)

巻号頁・発行日

vol.66, no.1, pp.69-79, 2017

著者

中村 龍哉 松井 裕樹 山田 義博 田渕 光春 小林 陽

出版者

Japan Society of Powder and Powder Metallurgy

雑誌

粉体および粉末冶金 (ISSN:05328799)

巻号頁・発行日

vol.57, no.11, pp.725-728, 2010-11-15

参考文献数

17

---

Cathode using the olivine particles was subjected to an open-circuit voltage measurement under the relaxation condition of 24 h at each SOC and DOD states. The electrochemical reaction in the LiFePO<SUB>4</SUB> cathode was composed of a large plateau around 3.45 V with sloped regions nearby for both the fully charged and discharged states. It was found that the potential profile in the sloped regions exhibited a hysteresis. Furthermore, both sloped regions became narrower when the operating temperature was raised from 30 to 60°C. Furthermore, it was found that the apparent diffusion coefficient of Li<SUP>+</SUP> ions in the sloped regions was much smaller than that in the plateau region. These facts implied that the obtained profiles were not in an equilibrium state with a quasi-OCV profile than the real one, and that the potential relaxation in the sloped regions took an extremely long time.

著者

島 裕也 中村 龍哉 松井 裕樹 山田 義博 宮内 啓成 橋本 聡司 阿部 一雄

出版者

Japan Society of Powder and Powder Metallurgy

雑誌

粉体および粉末冶金 (ISSN:05328799)

巻号頁・発行日

vol.57, no.11, pp.729-733, 2010-11-15

参考文献数

13

被引用文献数

1

---

LiFePO<SUB>4</SUB>/C composite particles were prepared by gas-solid phase reaction. The reaction temperature had a detrimental effect on the purity of the composite particles. The suitable temperature was around 650°C, above and below which ferromagnetic impurities were found. The retention time influenced only the carbon deposition amount, but the excess amount of carbon caused the degradation of the electrochemical performance. The specimen prepared at the optimum conditions exhibited superior performances in both rate capability and cycle stability as well as less impedance growth during the cycling.

著者

吉田 英生 石部 英臣 吉冨 聡 齋藤 元浩 松井 裕樹 江川 猛 岩井 裕 坪田 宏之 桑原 健雄 金丸 一宏

出版者

The Japan Society of Mechanical Engineers

雑誌

日本機械学会論文集 B編 (ISSN:03875016)

巻号頁・発行日

vol.72, no.722, pp.2562-2569, 2006

---

A hybrid bearing effectively stabilized by water evaporation from ultra-fine porous medium is proposed and its basic characteristics are clarified by numerical simulation and experiment. The proposed bearing aims to be applied to MGT (Micro Gas Turbine) and has mainly three advantages suitable for application to MGT. The first is the stability improved by water evaporation from ultra-fine porous medium. The second is the effective lubrication by liquid water at the start and stop of the journal rotation. The third is the cooling effect on the high-temperature journal due to water evaporation. A fundamental experiment from water lubrication to vapor lubrication via transition state has been carried out. The experiment indicated the potential of vapor lubrication and confirmed the stable start-up at water lubrication.