ZrO_2/Ni系傾斜機能材料を適用した再生冷却式エンジンの性能および損傷評価に関する研究 : (第1報, 部分FGM型ZrO_2/Ni電鋳燃焼器の評価結果)

概要

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A partial ZrO_2/Ni functionally graded materials (FGM) chamber coated with the pure ZrO_2 layer and the ZrO_2/Ni FGM layer was cyclically tested using the bipropellant of nitrogen tetroxide (NTO)/monomethyl hydrazine (MMH) at a nominal chamber pressure of 1.0 MPa to show the effect of the coating on life. These thermal barrier coating were coated using a process that employed the electro-formed method. The ηC^* for the durability tests of the partial ZrO_2/Ni FGM chamber was 97% at P_c=0.9 MPa and MR=1.65. At cylindrical section of the chamber, the thermal barrier coating composed of a pure ZrO_2 layer remained partially intact. However, the inner surface coating of the chamber throat section occurred prematurely the delamination. In the cycle durability tests, the damage of the coating was inspected by using the Reprica method. After the total of 260 firing tests, the profile of the coating damage was evaluated by using the computer aided micro-analyzer (CMA) system.
社団法人日本機械学会の論文
1998-05-25