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Mixing integrated method for preparing boride superhigh-temperature ceramic coating
The invention relates to the technical field of ceramic-based composite material coating preparation, in particular to a method for preparing a boride ultrahigh-temperature ceramic coating in a mixed and integrated mode. The silicon-zirconium-hafnium alloy powder is in direct contact with the carbon/carbon porous material, then the silicon-zirconium-hafnium alloy powder and the boron-containing mixture powder are placed in an argon environment together, the mixture is heated to the temperature above the melting point of the alloy powder, heat preservation is conducted for 20-60 min, a reaction is conducted, and the silicon-zirconium-hafnium alloy and the boron-containing mixture cannot make contact in the reaction process. The boride superhigh-temperature ceramic coating is prepared by fully utilizing volatilization and reaction paths of boron elements, the interface bonding strength of the coating and a matrix reaches up to 150 MPa or above, and the oxidation resistance of the whole material is remarkably improved by introducing the boride ceramic coating; in addition, according to the process, SiC micro-nano fibers capable of achieving a strengthening and toughening function are further introduced into the interior of the base body and the coating.
本发明涉及陶瓷基复合材料涂层制备技术领域，具体是一种混合一体式制备硼化物超高温陶瓷涂层的方法。硅锆铪合金粉体与碳/碳多孔材料直接接触，再与含硼混合物粉体一起置于氩气环境下，加热到合金粉体熔点以上，保温20‑60min进行反应，所述硅锆铪合金和含硼混合物在反应过程中不能接触。本发明充分利用硼元素的挥发和反应路径制备了硼化物超高温陶瓷涂层，涂层和基体的界面结合强度高达150MPa以上，且硼化物陶瓷涂层的引入显著提高了整体材料的抗氧化性能，此外本工艺还向基体内部及涂层当中引入了能够起到强韧化功能的SiC微纳米纤维。
Mixing integrated method for preparing boride superhigh-temperature ceramic coating
The invention relates to the technical field of ceramic-based composite material coating preparation, in particular to a method for preparing a boride ultrahigh-temperature ceramic coating in a mixed and integrated mode. The silicon-zirconium-hafnium alloy powder is in direct contact with the carbon/carbon porous material, then the silicon-zirconium-hafnium alloy powder and the boron-containing mixture powder are placed in an argon environment together, the mixture is heated to the temperature above the melting point of the alloy powder, heat preservation is conducted for 20-60 min, a reaction is conducted, and the silicon-zirconium-hafnium alloy and the boron-containing mixture cannot make contact in the reaction process. The boride superhigh-temperature ceramic coating is prepared by fully utilizing volatilization and reaction paths of boron elements, the interface bonding strength of the coating and a matrix reaches up to 150 MPa or above, and the oxidation resistance of the whole material is remarkably improved by introducing the boride ceramic coating; in addition, according to the process, SiC micro-nano fibers capable of achieving a strengthening and toughening function are further introduced into the interior of the base body and the coating.
本发明涉及陶瓷基复合材料涂层制备技术领域，具体是一种混合一体式制备硼化物超高温陶瓷涂层的方法。硅锆铪合金粉体与碳/碳多孔材料直接接触，再与含硼混合物粉体一起置于氩气环境下，加热到合金粉体熔点以上，保温20‑60min进行反应，所述硅锆铪合金和含硼混合物在反应过程中不能接触。本发明充分利用硼元素的挥发和反应路径制备了硼化物超高温陶瓷涂层，涂层和基体的界面结合强度高达150MPa以上，且硼化物陶瓷涂层的引入显著提高了整体材料的抗氧化性能，此外本工艺还向基体内部及涂层当中引入了能够起到强韧化功能的SiC微纳米纤维。
Mixing integrated method for preparing boride superhigh-temperature ceramic coating
一种混合一体式制备硼化物超高温陶瓷涂层的方法
DAI JIXIANG (author) / ZHAO TONGTONG (author) / SHI YAN (author) / SHA JIANJUN (author)
2023-11-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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