遮熱コーティング(TBC)の高耐久化の検討 : 柱状組織トップコート及び界面酸化物の成長抑制について(FP1 高温・高効率発電・エネルギー貯蔵技術)

概要

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In the improvement in durability of Thermal Barrier Coating (TBC) for gas turbines, thermal stress relief of ceramic topcoat and growth suppression of thermal growth oxide (TOO) formed on top/undercoat boundary are important technical subjects. In this paper, a trial production and a heat cycle test of the columnar structure TBC by EB-PVD advantageous to thermal stress relief were investigated. Furthermore, the growth process of TGO was investigated for the growth suppression. Consequently, the columnar structure TBC showed the excellent heat cycle durability compared with plasma sprayed TBC. It was shown that TGO is constituted by Yttrium containing Al_2O_3 matrix composite oxide layer and a nodular composite oxides.
一般社団法人日本機械学会の論文
2004-06-22