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Preparation method of high-temperature-resistant reinforced and toughened Ox/Ox composite material
The invention discloses a preparation method of a high-temperature-resistant reinforced and toughened Ox/Ox composite material, and relates to the technical field of ceramic matrix composite materials. The method comprises the following steps: carrying out impregnation heat treatment pretreatment on an aluminum oxide fiber fabric by using a mixed solution of ammonium dichromate and anhydrous oxalic acid to obtain surface-coated aluminum oxide fibers, adding CVI to prepare a pyrolytic carbon coating layer or a BN coating layer, and carrying out electrophoretic deposition on the coating layer toobtain a nanowire coating layer; and coating the surface of the aluminum oxide fiber fabric with the nanowire coating layer with an aluminum oxide ceramic slurry, and carrying out hot pressing and sintering to obtain the high-performance Ox/Ox composite material. According to the preparation method of the high-temperature-resistant reinforced and toughened Ox/Ox composite material provided by theinvention, a high-density matrix and a microporous nano oxide coating layer are obtained, and a weak interface is formed between aluminum oxide fibers and an aluminum oxide matrix, so that the high-strength, high-toughness and high-temperature-resistant aluminum oxide fiber reinforced aluminum oxide matrix composite material is obtained.
本发明公开一种耐高温增强增韧Ox/Ox复合材料的制备方法，涉及陶瓷基复合材料技术领域。本发明首先采用重铬酸铵和无水草酸的混合溶液对氧化铝纤维织物进行浸渍‑热处理的预处理，获得表面覆膜的氧化铝纤维，再放入CVI制备热解炭涂层或BN涂层，在涂层上采用电泳沉积方法获得纳米线涂层，然后将氧化铝陶瓷料浆涂覆在带有纳米线涂层的氧化铝纤维织物表面进行热压，烧结，获得高性能的Ox/Ox复合材料。本发明提供一种耐高温增强增韧Ox/Ox复合材料的制备方法，获得了高致密度基体和多微孔纳米氧化物涂层，使氧化铝纤维和氧化铝基体间形成弱界面，从而获得了高强度、高韧性、耐高温的氧化铝纤维增强氧化铝基体复合材料。
Preparation method of high-temperature-resistant reinforced and toughened Ox/Ox composite material
The invention discloses a preparation method of a high-temperature-resistant reinforced and toughened Ox/Ox composite material, and relates to the technical field of ceramic matrix composite materials. The method comprises the following steps: carrying out impregnation heat treatment pretreatment on an aluminum oxide fiber fabric by using a mixed solution of ammonium dichromate and anhydrous oxalic acid to obtain surface-coated aluminum oxide fibers, adding CVI to prepare a pyrolytic carbon coating layer or a BN coating layer, and carrying out electrophoretic deposition on the coating layer toobtain a nanowire coating layer; and coating the surface of the aluminum oxide fiber fabric with the nanowire coating layer with an aluminum oxide ceramic slurry, and carrying out hot pressing and sintering to obtain the high-performance Ox/Ox composite material. According to the preparation method of the high-temperature-resistant reinforced and toughened Ox/Ox composite material provided by theinvention, a high-density matrix and a microporous nano oxide coating layer are obtained, and a weak interface is formed between aluminum oxide fibers and an aluminum oxide matrix, so that the high-strength, high-toughness and high-temperature-resistant aluminum oxide fiber reinforced aluminum oxide matrix composite material is obtained.
本发明公开一种耐高温增强增韧Ox/Ox复合材料的制备方法，涉及陶瓷基复合材料技术领域。本发明首先采用重铬酸铵和无水草酸的混合溶液对氧化铝纤维织物进行浸渍‑热处理的预处理，获得表面覆膜的氧化铝纤维，再放入CVI制备热解炭涂层或BN涂层，在涂层上采用电泳沉积方法获得纳米线涂层，然后将氧化铝陶瓷料浆涂覆在带有纳米线涂层的氧化铝纤维织物表面进行热压，烧结，获得高性能的Ox/Ox复合材料。本发明提供一种耐高温增强增韧Ox/Ox复合材料的制备方法，获得了高致密度基体和多微孔纳米氧化物涂层，使氧化铝纤维和氧化铝基体间形成弱界面，从而获得了高强度、高韧性、耐高温的氧化铝纤维增强氧化铝基体复合材料。
Preparation method of high-temperature-resistant reinforced and toughened Ox/Ox composite material
一种耐高温增强增韧Ox/Ox复合材料的制备方法
YANG HAITANG (author)
2021-03-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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