著者

中村 雅史 原口 忠男 内山 賢

出版者

一般社団法人 表面技術協会

雑誌

表面技術 (ISSN:09151869)

巻号頁・発行日

vol.61, no.4, pp.325, 2010-04-01 (Released:2010-11-11)

参考文献数

24

被引用文献数

2 2

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This paper presents an investigation of the thermoelectric performance of DLC films deposited on glass substrates using RF plasma CVD method. The respective thermoelectric performances of Si-doped DLC film and non-Si doped DLC film were evaluated and compared. The DLC films showed a Seebeck effect, and they had p-type semiconductor characteristics.The values of DLC films’ Seebeck coefficients were 1/5 - 1/100 compared to those of the conventional thermoelectric materials. At temperatures of 80-200°C, the Seebeck coefficients of Si-doped DLC and non-doped DLC were almost identical. The resistivity value of DLC films decreased exponentially with increasing temperature. Furthermore, the DLC film values were much larger than those of conventional thermoelectric materials: 105 to 1010 times larger. The thermal conductivity of DLC films was about one-half that of conventional thermoelectric materials at room temperature. The results presented above suggest that reducing DLC film resistivity through control of deposition conditions, doped element composition, and other means must be examined to raise the thermoelectric performance of DLC film.

著者

鈴木 秀人 松村 亜紀子 福永 久雄 原口 忠男

出版者

一般社団法人日本機械学会

雑誌

日本機械学会論文集. A編 (ISSN:03875008)

巻号頁・発行日

vol.62, no.603, pp.2501-2505, 1996-11-25

参考文献数

15

被引用文献数

9

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Influences of the recycling process on the fatigue crack propagation (FCP) property of glass fiber-reinforced PEEK were examined. In the present research the influence of the recycling process on the property of matrix resin was focused on. The main results were as follows: (1)It was noted that the FCP property of recycled PEEK/GF materials were as superior to that of virgin material. (2)The length of glass fibers in PEEK resin as not markedly reduced during the recycling process, due to the good fluidity of PEEK resin. (3)FCP curves on a da/dN-ΔK diagram for virgin and recycled PEEK/GF materials were expressed as one curved line on a da/dN-ΔK/E diagram. It was found that the elasticity modulus had been improved by repeated melting and crystallization during the recycling process.