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Preparation method of NiTi fiber reinforced intermetallic compound-based laminar composite material for vibration and noise reduction

An intermetallic compound and fiber reinforced technology, which is applied in the field of preparation of laminated energy-absorbing materials, can solve the problems of poor impact resistance, low strength, and the working environment that cannot be applied with bearing capacity, etc., and achieves the effect of toughening and increasing damping performance.

Active Publication Date: 2014-10-15
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to low strength and poor impact resistance, this kind of material cannot be used in working environments with high load capacity, dynamic load and high temperature.

Method used

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  • Preparation method of NiTi fiber reinforced intermetallic compound-based laminar composite material for vibration and noise reduction
  • Preparation method of NiTi fiber reinforced intermetallic compound-based laminar composite material for vibration and noise reduction
  • Preparation method of NiTi fiber reinforced intermetallic compound-based laminar composite material for vibration and noise reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Cut the 0.5mm Ti foil and 0.9mm Al foil into 100mm×100mm square foil, and cut the NiTi alloy fiber into 10mm long fiber, and use sandpaper to polish and clean the original metal foil and fiber surface to remove scale and expose Clean the surface, then clean the polished Ti foil, Al foil, and NiTi alloy fiber with an ultrasonic cleaner for 20 minutes, and finally clean the surface of the metal foil and fiber with alcohol to remove the remaining oxide particles and impurities. After drying treatment, stack two units according to "Ti foil-Al foil-NiTi fiber-Al foil-Ti foil" as a unit, the distance between fibers is 1mm, and the uppermost and lowermost layers are Ti foil.

[0032] Put the arranged metal foil blanks into a vacuum hot-press furnace for composite material preparation: in 10 -3 Under a low vacuum of Pa, raise the temperature to 640°C for 0.5h at a heating rate of 10°C / min, then raise the temperature to 660°C at a heating rate of 2°C / min and hold for 0.5h, and t...

Embodiment 2

[0036] The pretreatment method of raw material is the same as embodiment 1, and used Al foil thickness is 1.1mm, and used process parameter is: at 10 -3 Under a low vacuum of Pa, raise the temperature to 640°C for 0.5h at a heating rate of 10°C / min, then raise the temperature to 660°C at a heating rate of 2°C / min and hold for 0.5h, and then increase the temperature at a rate of 1°C / min Raise the temperature to 675°C for 1.5h, then cool down to 400°C at a rate of 2°C / min. Maintain a pressure of 2MPa during the heating process, apply a pressure of 1MPa during the 675°C holding stage, and maintain a pressure of 2MPa during the cooling stage.

[0037] The NiTi fiber reinforced Ti / Al that this embodiment gains 3 Scanning electron micrographs of Ti layered composites (attached image 3 ) It can be seen that when the temperature decreases, the holding time decreases, the Al foil thickens, and the pressure decreases, the NiTi fiber and Al 3 The bonding part of the Ti matrix also ha...

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Abstract

The invention provides a preparation method of a NiTi fiber reinforced intermetallic compound-based laminar composite material for vibration and noise reduction. The preparation method comprises the steps of polishing Ti foils, Al foils and NiTi alloy fibers by use of abrasive paper to remove oxide layers, next, cleaning by use of an ultrasonic cleaner and then cleaning by use of alcohol, drying, stacking by the unit of Ti foil-Al foil-NiTi fibers-Al foil-Ti foil with the Ti foils as the outmost layers, and putting the entire stacked material in a vacuum hot pressing furnace for sintering. The prepared fiber reinforced laminar composite material is highly damped (the loss modulus can be 3500MPa under the conditions of a temperature ranging from a room temperature to 50 DEG C and 1Hz, and the loss modulus can be 4100MPa under the conditions of the same temperature range and 20Hz) and has high strength (the compressive strength can be 1400MPa), and therefore, the prepared fiber reinforced laminar composite material is a high-performance structure-function integrated composite material.

Description

technical field [0001] The invention relates to a preparation method of a laminated energy-absorbing material including a superelastic NiTi fiber reinforced material. Background technique [0002] Using high damping materials to achieve vibration reduction and noise reduction has become an effective way in the field of modern engineering technology. High-performance damping materials are used in a wide range of applications. For example, in ship construction, high-performance damping materials are required to achieve vibration and noise reduction. Noise-reducing panels and sound-absorbing pads used in automobiles, and sound-insulating materials used in building structures are also high-damping materials or composite material. Analyzing the current research and application status of high damping materials for vibration and noise reduction, it can be found that high damping materials mainly include polymer damping materials, such as polyacrylate, epoxy resin, etc., high damp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/20C22C47/02C22C49/12C22C49/14C22C111/00
Inventor 姜风春汪恩浩蔺春发果春焕常云鹏齐心
Owner HARBIN ENG UNIV
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