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High-damping composite material

A composite material and high damping technology, applied in the field of damping composite materials, can solve the problems of low damping peak value and high density of damping composite materials.

Inactive Publication Date: 2014-04-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of high density and low damping peak value of existing damping composite materials, and provide a composite material with high damping characteristics in a specific temperature range

Method used

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  • High-damping composite material

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specific Embodiment approach 1

[0012] Specific Embodiment 1: In this embodiment, the high-damping composite material is made of TiNi alloy fiber and matrix metal, wherein the matrix metal is aluminum, aluminum alloy or magnesium alloy, and the volume fraction of TiNi alloy fiber in the high-damping composite material is 30%. ~60%.

[0013] The high-damping composite material in this embodiment is composed of TiNi alloy fibers and light alloys (aluminum alloy or magnesium alloy). The TiNi alloy will undergo a phase transformation from martensite to austenite at a certain temperature, thereby producing high damping characteristics. Composite materials with high damping properties at specific temperatures can be prepared by selecting TiNi alloy fibers with different phase transition temperatures as reinforcements.

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment is different from Embodiment 1 in that the diameter of the TiNi alloy fiber is 0.1-1 mm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the atomic ratio of Ni in the TiNi alloy fiber is 48%-52%. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a damping composite material, and particularly relates to a high-damping composite material, which solves the problems of large density and low damping peak value of the existing damping composite material. The high-damping composite material is compounded by TiNi alloy fiber and a base metal, wherein the base material is aluminum, aluminum alloy or magnesium alloy, and the TiNi alloy fiber accounts for 30%-60% the volume of the high-damping composite material. The TiNi alloy fibers of different phase-transition temperatures can be used as enhanceosome for preparing the composite material with high damping property between -100 DEG C and 120 DEG C. The high-damping composite material has low density, and the damping peak value of the high-damping composite material compounded by TiNi alloy fiber with phase-transition temperature of 70 DEG C and 1060 Al can reach 0.04. The high-damping composite material can be used in structures such as supporting platforms of aerospace precision components.

Description

technical field [0001] The invention relates to a damping composite material. Background technique [0002] The continuous integration and lightweight of high-precision equipment and instruments used in the aerospace field put forward higher requirements for the damping performance of materials. For example, during the service of aerospace remote sensing satellites, due to the influence of moving parts on the star such as the rotation of the momentum wheel and the stepping of the solar wing, as well as the space environment including solar wind disturbances and changes in the earth's gravitational field, the satellites will vibrate slightly. This kind of micro-vibration has small energy and wide frequency, and the attitude control system is difficult to measure and control, and it will cause micro-deformation or micro-displacement between the parts that make up the structure of the space camera and the optical system, and affect the imaging quality. With the development of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/14C22C49/04C22C49/06C22C47/12C22C47/14C22C111/00
Inventor 武高辉胡杰张强姜龙涛
Owner HARBIN INST OF TECH