A preparation method of continuous fiber reinforced thermal structural material composite interface layer
A technology of continuous fiber and thermal structure, which is applied in the field of preparation of composite interface layer of continuous fiber reinforced thermal structural material, can solve the problems of loss of fiber reinforcement and toughening effect, brittle failure of continuous fiber reinforced thermal structural composite material, etc. Performance, improved mechanical properties and high temperature stability, long service life at high temperature
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specific Embodiment 1
[0031] Such as figure 1 As shown, the embodiment of the present invention provides a method for preparing an interface layer of a continuous fiber reinforced thermal structural composite material, including:
[0032] Step S101, using oxide fibers as raw materials to obtain oxide fiber preforms;
[0033] Step S102, preparing a cracked carbon layer on the surface of the oxide fiber preform;
[0034] Step S103, preparing a zirconia layer on the surface of the oxide fiber preform.
[0035] In the embodiment of the present invention, a cracked carbon layer and a zirconia layer are prepared on the surface of the oxide fiber preform as an interface layer. After the cracked carbon layer is oxidized, a porous interface can be formed, and a layer of zirconia layer is added on the cracked carbon layer. , forming a composite interface layer of cracked carbon and zirconia, which can prevent the infiltration of oxygen and prevent excessive oxidation of the carbon layer. The introduction o...
specific Embodiment 2
[0049] The embodiment of the present invention provides a preparation method of an alumina fiber prefabricated body reinforced alumina ceramic matrix composite material interface layer, which specifically includes the following process steps:
[0050] (1) Preparation of fiber prefabricated body: alumina fiber is used as raw material, and alumina fiber prefabricated body is prepared by weaving process; alumina fiber prefabricated body is three-dimensional four-way structure, three-dimensional five-way structure, three-dimensional six-way structure or three-dimensional orthogonal Equal structure; the fiber volume fraction in the alumina fiber preform is 40% to 45%.
[0051] (2) Pretreatment of alumina fiber preforms: put the alumina fiber preforms in step (1) into a muffle furnace, and heat up to 500°C to 500°C in an air atmosphere at a rate of 5°C / min to 10°C / min Keep warm at 600°C for 1-2 hours, then cool naturally to below 100°C and take out.
[0052] (3) Preparation of carb...
specific Embodiment 3
[0055] The embodiment of the present invention provides a preparation method of an alumina fiber prefabricated body reinforced alumina ceramic matrix composite material interface layer, which specifically includes the following process steps:
[0056] (1) Preparation of fiber prefabricated body: Alumina fiber preformed body with three-dimensional and four-directional structure was prepared by weaving process with alumina fiber as raw material, and the volume fraction of alumina fiber preformed body was controlled to be 40%.
[0057] (2) Pretreatment of alumina fiber preforms: put the alumina fiber preforms in step (1) into a muffle furnace, heat up to 500°C at 5°C / min in an air atmosphere, keep warm for 2h, and cool naturally Take it out below 100°C.
[0058] (3) Preparation of carbon interface: Utilize chemical vapor deposition process to prepare cracked carbon layer on the surface of alumina fiber preform obtained in above step (2); chemical vapor deposition process paramete...
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Abstract
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