Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing molybdenum silicide coating through slurry sintering
The invention relates to a method for preparing a molybdenum silicide coating through slurry sintering. The molybdenum silicide coating is prepared on the surface of a niobium-silicon alloy matrix, and the molybdenum silicide coating comprises a MoSi2 outer layer and a transition layer located between the matrix and the MoSi2 outer layer. According to the coating structure composed of the MoSi2 outer layer and the transition layer Mo5Si3, the outer layer provides good high-temperature oxidation resistance, metallurgical bonding is formed between the transition layer and the matrix, and the coating is tightly combined with the matrix. Due to the fact that the coating frequency is controllable, the thickness of the molybdenum silicide coating is easy to control. The method specifically comprises the following steps of refining powder by adopting a ball milling method, brushing slurry with a certain molybdenum-silicon ratio on the surface of a niobium-silicon alloy matrix for multiple times, drying in a drying box in a stepped manner, finally putting the dried sample into an ultrahigh-temperature high-vacuum heat treatment furnace, heating to 1000-1400 DEG C, keeping the temperature for 10-60 minutes, heating to 1400-1650 DEG C, and keeping the temperature for 30-90 minutes, and cooling to obtain the molybdenum silicide coating.
本发明涉及一种通过料浆烧结制备硅化钼涂层的方法，在铌硅合金基体表面制备了硅化钼涂层，包括MoSi2外层、以及位于基体和MoSi2外层之间的过渡层。该发明获得的由MoSi2外层和过渡层Mo5Si3组成的涂层结构，外层提供了良好的高温抗氧化性能，过渡层与基体之间形成冶金结合，涂层与基体结合紧密。由于涂覆次数可控，从而较容易实现硅化钼涂层厚度的控制。具体为：首先采用球磨法细化粉料，然后在铌硅合金基体表面多次刷涂钼硅比为一定比例的料浆，之后在干燥箱中采用阶梯式干燥，最后将干燥后的试样放入超高温高真空热处理炉中，加热到1000～1400℃后保温10～60min，再升温至1400～1650℃保温30～90min，冷却后得到硅化钼涂层。
Method for preparing molybdenum silicide coating through slurry sintering
The invention relates to a method for preparing a molybdenum silicide coating through slurry sintering. The molybdenum silicide coating is prepared on the surface of a niobium-silicon alloy matrix, and the molybdenum silicide coating comprises a MoSi2 outer layer and a transition layer located between the matrix and the MoSi2 outer layer. According to the coating structure composed of the MoSi2 outer layer and the transition layer Mo5Si3, the outer layer provides good high-temperature oxidation resistance, metallurgical bonding is formed between the transition layer and the matrix, and the coating is tightly combined with the matrix. Due to the fact that the coating frequency is controllable, the thickness of the molybdenum silicide coating is easy to control. The method specifically comprises the following steps of refining powder by adopting a ball milling method, brushing slurry with a certain molybdenum-silicon ratio on the surface of a niobium-silicon alloy matrix for multiple times, drying in a drying box in a stepped manner, finally putting the dried sample into an ultrahigh-temperature high-vacuum heat treatment furnace, heating to 1000-1400 DEG C, keeping the temperature for 10-60 minutes, heating to 1400-1650 DEG C, and keeping the temperature for 30-90 minutes, and cooling to obtain the molybdenum silicide coating.
本发明涉及一种通过料浆烧结制备硅化钼涂层的方法，在铌硅合金基体表面制备了硅化钼涂层，包括MoSi2外层、以及位于基体和MoSi2外层之间的过渡层。该发明获得的由MoSi2外层和过渡层Mo5Si3组成的涂层结构，外层提供了良好的高温抗氧化性能，过渡层与基体之间形成冶金结合，涂层与基体结合紧密。由于涂覆次数可控，从而较容易实现硅化钼涂层厚度的控制。具体为：首先采用球磨法细化粉料，然后在铌硅合金基体表面多次刷涂钼硅比为一定比例的料浆，之后在干燥箱中采用阶梯式干燥，最后将干燥后的试样放入超高温高真空热处理炉中，加热到1000～1400℃后保温10～60min，再升温至1400～1650℃保温30～90min，冷却后得到硅化钼涂层。
Method for preparing molybdenum silicide coating through slurry sintering
一种通过料浆烧结制备硅化钼涂层的方法
GUO XIPING (Autor:in) / LI LONGFEI (Autor:in) / QIAO YANQIANG (Autor:in)
15.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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