Preparation method of porous marmem damping composite material covered with metal

A technology of damping composite materials and memory alloys, which is applied in the field of damping to achieve good damping performance, improved mechanical properties, and good damping effects

Inactive Publication Date: 2003-07-09
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there is no report on the damping composite material that organically combines the good damping performance of porous materials with the damping effect produced by the thermoelastic martensitic phase transformation of shape memory alloys, and is coated with a metal protective layer.

Method used

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  • Preparation method of porous marmem damping composite material covered with metal
  • Preparation method of porous marmem damping composite material covered with metal
  • Preparation method of porous marmem damping composite material covered with metal

Examples

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Embodiment 1

[0046] Use industrial pure nickel powder (average particle size of 4μm) and titanium powder (average particle size of 44μm), and mix according to equiatomic ratio; after fully mixing for 24 hours, make a blank with an original porosity of (50±2)%. The size is φ25×150mm 2 ;Under the protection of an industrial pure argon atmosphere with a purity of 99.99%, put it into an industrial electric furnace for preheating; when the preheating temperature of the billet reaches 300°C, use a tungsten wire heated by electricity to ignite the billet. Spontaneously spread, the porous nickel-titanium shape memory alloy was synthesized within 30 seconds.

[0047] The pores of the porous nickel-titanium shape memory alloy in this embodiment are evenly distributed and have a three-dimensional connected network pore structure (such as figure 1 with figure 2 shown). In this embodiment, the porosity of the porous nickel-titanium shape memory alloy is about 58%, the average pore size is about 300...

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Abstract

The present invention relates to the field of damping technology, in particular, it relates to a method for preparing porous marmen damping composite material covered with metal, and its preparation method includes the following steps: (1) preparing porous marmen: mixing original marmen powders, making blank material, prehaeting in heating furnace, lighting blank to synthesizing the porous marmen.; (2) treating porous marmen; machining to obtain the required form and size and cleaning; and (3). covering with metal; melting metal alloy for covering the marmen, cleaning die mould, placing the treated porous marmen into mould, closing die mould, pouring covering metal alloy into die mould, press-casting so as to obtain the invented product with excellent damping and mechanical properties andsmall density.

Description

technical field [0001] The invention relates to damping technology, in particular to a method for preparing a metal-coated porous shape memory alloy damping composite material. Background technique [0002] With the development of modern science and technology, the control of vibration, shock and noise is becoming more and more important. For example, the increase of mechanical operating speed will generate strong vibration and noise, which will interfere with the automatic control system, reduce the measurement accuracy of the instrument, or cause fatigue damage or even fatigue damage. Therefore, research on vibration and noise reduction technology and its related materials has received widespread attention (Document 1: Editor-in-Chief Wu Renjie, Composite Materials, Tianjin: Tianjin University Press, 2000). [0003] In the industry, the following methods are generally used to control vibration and noise: 1) Increase the weight, improve the stiffness of the components, red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/08B22F7/04B32B15/01F16F9/30
Inventor 张峻巍李永华朱圣龙王福会戎利建杨树林李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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