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Three-dimensional net-shaped nanowire soft interface on alumina fiber surface and preparation method of three-dimensional net-shaped nanowire soft interface
The invention provides a three-dimensional network nanowire soft interface on an alumina fiber surface and a preparation method of the three-dimensional network nanowire soft interface, and belongs to the technical field of alumina fiber reinforced ceramic composite materials. The preparation method comprises the following steps: pretreating alumina fibers, fixing the alumina fibers by using a clamp, putting the alumina fibers into a chemical vapor deposition furnace, vacuumizing and heating the interior of the chemical vapor deposition furnace, keeping the temperature after heating, introducing trichloromethylsilane, hydrogen and argon for chemical vapor deposition, and cooling to room temperature after deposition is completed, so as to obtain the alumina fibers. The surface of the alumina fiber is provided with a three-dimensional network nanowire soft interface. Due to the existence of the nanowires, the interface bonding surface area of the fiber-matrix is greatly increased. When an external load acts on an oxide ceramic-based composite material prepared from the fiber, the shear stress on the surfaces of the nanowires widely distributed at the interface of the fiber and a matrix can improve the energy consumed by damage of the composite material, so that the toughening effect is further improved.
本发明提供了一种氧化铝纤维表面的三维网状纳米线软界面及其制备方法，属于氧化铝纤维增强陶瓷复合材料技术领域。本发明将氧化铝纤维预处理后用夹具固定，放入化学气相沉积炉中，将所述化学气相沉积炉炉体内抽真空并升温，升温结束后保温并通入三氯甲基硅烷、氢气和氩气进行化学气相沉积，沉积完成后冷却至室温，得到表面具有三维网状纳米线软界面的氧化铝纤维。由于纳米线的存在，会使纤维‑基体的界面结合表面积大幅度增加。当外加载荷作用于由本纤维制备而成的氧化物陶瓷基复合材料时，广泛分布于纤维和基体的界面处的纳米线表面的剪切应力能够提高复合材料破坏所耗散的能量，从而进一步提高增韧效果。
Three-dimensional net-shaped nanowire soft interface on alumina fiber surface and preparation method of three-dimensional net-shaped nanowire soft interface
The invention provides a three-dimensional network nanowire soft interface on an alumina fiber surface and a preparation method of the three-dimensional network nanowire soft interface, and belongs to the technical field of alumina fiber reinforced ceramic composite materials. The preparation method comprises the following steps: pretreating alumina fibers, fixing the alumina fibers by using a clamp, putting the alumina fibers into a chemical vapor deposition furnace, vacuumizing and heating the interior of the chemical vapor deposition furnace, keeping the temperature after heating, introducing trichloromethylsilane, hydrogen and argon for chemical vapor deposition, and cooling to room temperature after deposition is completed, so as to obtain the alumina fibers. The surface of the alumina fiber is provided with a three-dimensional network nanowire soft interface. Due to the existence of the nanowires, the interface bonding surface area of the fiber-matrix is greatly increased. When an external load acts on an oxide ceramic-based composite material prepared from the fiber, the shear stress on the surfaces of the nanowires widely distributed at the interface of the fiber and a matrix can improve the energy consumed by damage of the composite material, so that the toughening effect is further improved.
本发明提供了一种氧化铝纤维表面的三维网状纳米线软界面及其制备方法，属于氧化铝纤维增强陶瓷复合材料技术领域。本发明将氧化铝纤维预处理后用夹具固定，放入化学气相沉积炉中，将所述化学气相沉积炉炉体内抽真空并升温，升温结束后保温并通入三氯甲基硅烷、氢气和氩气进行化学气相沉积，沉积完成后冷却至室温，得到表面具有三维网状纳米线软界面的氧化铝纤维。由于纳米线的存在，会使纤维‑基体的界面结合表面积大幅度增加。当外加载荷作用于由本纤维制备而成的氧化物陶瓷基复合材料时，广泛分布于纤维和基体的界面处的纳米线表面的剪切应力能够提高复合材料破坏所耗散的能量，从而进一步提高增韧效果。
Three-dimensional net-shaped nanowire soft interface on alumina fiber surface and preparation method of three-dimensional net-shaped nanowire soft interface
一种氧化铝纤维表面的三维网状纳米线软界面及其制备方法
LIN HONGJIAO (Autor:in) / SUN ZHONGYUAN (Autor:in) / CAI XIANGYU (Autor:in) / FENG TAO (Autor:in) / WEN ZHIXUN (Autor:in) / LIU HANGYI (Autor:in) / LIU RUIXIAN (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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