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首页> 外文会议>International astronautical congress >ADVANCED MOSI2/NBSI2/NB5SI3 MULTILAYER COATING ON NIOBIUM ALLOY FOR BIPROPELLANT ROCKET ENGINE
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ADVANCED MOSI2/NBSI2/NB5SI3 MULTILAYER COATING ON NIOBIUM ALLOY FOR BIPROPELLANT ROCKET ENGINE

机译：双推进火箭发动机铌合金上的先进MOSI2 / NBSI2 / NB5SI3多层涂层。

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Dense and fine grained Mo coating was deposited on the Nb-based alloy by arc ion plating, and then the Mo coated Nb-based alloy specimens were silicidized to form MoSi_2/NbSi_2/Nb_5Si_3 multilayer coating by silicon pack cementation. The morphology, structure and components of as-deposited Mo coating and multilayer coating after silicon pack cementation were studied. For the multilayer coated Nb-based alloy specimens, the oxidation resistance in static at 1800 °C and thermal shock from room temperature to 1700 °C were tested. The results show that the oxidation resistance of life time for the multilayer coated Nb-based specimens at 1800 °C reaches 30 hours and the times of the thermal shock is 1300 cycles at 1700 °C. Meanwhile, The MoSi2/NbSi2/Nb5Si3 multilayer coating was successfully deposited on outer and inner surfaces of Nb-based alloy in thrust chamber. The rocket thrust chamber has gone hot testing for 600 s at 1600 °C and the whole thrust chamber kept well.
机译：通过电弧离子镀在Nb基合金上沉积致密细晶粒的Mo涂层，然后通过硅包胶结法对涂Mo的Nb基合金试样进行硅化处理，形成MoSi_2 / NbSi_2 / Nb_5Si_3多层涂层。研究了硅包胶结后沉积的Mo涂层和多层涂层的形貌，结构和组成。对于多层涂覆的Nb基合金样品，测试了1800°C静态下的抗氧化性以及从室温到1700°C的热冲击。结果表明，在1800°C下，多层涂覆的Nb基试样的抗氧化寿命为30小时，在1700°C下，热冲击的次数为1300个循环。同时，在推力室内Nb基合金的内外表面成功沉积了MoSi2 / NbSi2 / Nb5Si3多层涂层。火箭推力室在1600°C下进行了600 s的高温测试，整个推力室保持良好状态。

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