type: misc

label: url

en: 傾斜機能化の新展開 : 分散協調型太陽熱-岩石蓄熱エネルギー供給システムの研究開発 (特集 高機能化を実現する傾斜機能材料の最新開発動向)

en: 工業材料

ja: 工業材料


en: Efficient Research and Development of Functionally Graded Materials (FGMs) Use to the Analysis of FGMs Database

ja: FGMsデータベースを利用した効率的な傾斜機能材料の研究開発

en: The materials selections of MoSi2/Mo/Nb/γ - TiAl FGMs were performed with the analysis of FGMs database. The stable FGMs criterion without interlayer cracking of ∆α∆T less than 4.3 × 10-3 was derived from FGMs database, where ∆T is the differences in the thermal expansion coefficient and temperature ∆T is between processing and room temperatures. The MoSi2/Mo/Nb/γ - TiAl FGMs were prepared using the spark plasma sintering (SPS) method, followed by siliconized in molten salts. Nb foil was firmly joined to the γ - TiAl surface and Mo foil was firmly joined to the Nb foil. The ∆αNb-Mo∆T and ∆αγ-TiAl-Nb∆T values were consistent with the criterion, where ∆αNb-Mo, ∆αγ-TiAl-Nb, and ∆T arethe differences between the coefficients of thermal expansion of Nb and Mo, and of γ - TiAl and Nb, and ∆T is the difference between the SPS temperature and room temperature. The MoSi2/Mo/Nb/γ - TiAl FGMs were dense and had neither cracks nor voids. The thickness loss of the MoSi2/Mo/Nb/γ - TiAl FGMs was 11 µm after 200 h exposure to air at 1323 K.

en: Journal of the Japan Society of Powder and Powder Metallurgy

ja: 粉体および粉末冶金


en: 新熱応力緩和型傾斜機能材料の研究開発動向

ja: 新熱応力緩和型傾斜機能材料の研究開発動向

en: Materials Science & Technology

ja: 金属