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A kind of layered composite material and preparation method thereof

A layered composite material and composite material technology, applied in the field of layered composite materials and its preparation, can solve the problems of affecting the service life of materials, poor palladium high-temperature comprehensive performance, poor high-temperature durable strength of composite materials, etc., and achieve the goal of avoiding high-temperature performance Decrease, improve high-temperature mechanical properties, and reduce production costs

Active Publication Date: 2011-12-14
重庆亿煊新材料科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, since the melting point of pure palladium is about 200°C lower than that of platinum, and the high-temperature comprehensive performance of palladium is poor, the high-temperature durable strength of the composite material is poor, which affects the service life of the material

Method used

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  • A kind of layered composite material and preparation method thereof
  • A kind of layered composite material and preparation method thereof
  • A kind of layered composite material and preparation method thereof

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preparation example Construction

[0028] The present invention also provides a kind of preparation method of layered composite material, comprises the following steps:

[0029] Alloying, casting, and powdering the first noble metal with one or more of Zr, Y, La, and Er to obtain Pt-based multi-element alloy powder, the first noble metal being Pt and / or Rh;

[0030] Alloying, casting, and powdering the second noble metal with one or more of Zr, Y, La, and Er to obtain Pd-based multi-element alloy powder, the second noble metal being Pd and / or the third noble metal, The third noble metal is Rh and / or Ir;

[0031]The Pd-based multi-element alloy powder is placed between two layers of Pt-based multi-element alloy powder for internal oxidation-sintering treatment, hot-press forming and forging treatment to obtain a layered composite material.

[0032] In the present invention, the alloying, casting and powdering treatment of the first noble metal and one or more of Zr, Y, La and Er are carried out, specifically: t...

Embodiment 1

[0040] Using 3791.2 grams of Pt, 200 grams of Rh, 4 grams of Zr and 4.8 grams of La as raw materials, melt and cast a Pt-based multi-element alloy containing 0.10wt% Zr and 0.12wt% La in a vacuum induction melting furnace;

[0041] Using 3791.2 grams of Pd, 200 grams of Rh, 4 grams of Zr and 3.2 grams of La as raw materials, melting and casting a Pd-based multi-element alloy containing 0.10wt% Zr and 0.08wt% La in a vacuum induction melting furnace;

[0042] Using a powder metallurgy method to prepare the Pt-based multi-element alloy and the Pd-based multi-element alloy into Pt-based multi-element alloy powder and Pd-based multi-element alloy powder;

[0043] Get 500 grams of the Pt-based multi-element alloy powder and pack it into the bottom layer of the platinum box for compaction, then put 4000 grams of Pd-based multi-element alloy powder into the Pt-based alloy powder and compact it for leveling, then place 500 grams of Pt-based multi-element alloy powder The alloy powder ...

Embodiment 2

[0046] Using 3791.2 grams of Pt, 200 grams of Rh, 4 grams of Zr and 4.8 grams of La as raw materials, melt and cast a Pt-based multi-element alloy containing 0.10wt% Zr and 0.12wt% La in a vacuum induction melting furnace;

[0047] Using 3791.2 grams of Pd, 200 grams of Rh, 4 grams of Zr and 3.2 grams of La as raw materials, melting and casting a Pd-based multi-element alloy containing 0.10wt% Zr and 0.08wt% La in a vacuum induction melting furnace;

[0048] Using a powder metallurgy method to prepare the Pt-based multi-element alloy and the Pd-based multi-element alloy into Pt-based multi-element alloy powder and Pd-based multi-element alloy powder;

[0049] Get 1000 grams of the Pt-based multi-element alloy powder and pack it into the bottom layer of the platinum box for compaction, then put 3000 grams of Pd-based multi-element alloy powder into the Pt-based alloy powder and compact it for leveling, then place 1000 grams of Pt-based multi-element alloy powder The alloy powde...

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Abstract

The invention discloses a layered composite material and a preparation method thereof. The layered composite material comprises a first dispersion-strengthening Pt (platinum)-base alloy layer, a dispersion-strengthening Pd (palladium)-base alloy layer and a second dispersion-strengthening Pt-base alloy layer which are in contact with each other sequentially. Compared with the prior art, as the top layer, middle layer and bottom layer of the layered composite material provided by the invention are all made from dispersion-strengthening materials, the high-temperature mechanical property of the layered composite material is obviously improved, the reduction of the high-temperature property of the material caused by pure Pd adopted by the middle layer is avoided, and thus the layered composite material has good high-temperature persistent strength and creep resistance. Moreover, according to the invention, the Pt content in the material is lowered, thus obviously lowering the production cost. The experimental result indicates that: the persistent strength of the layered composite material prepared by the method disclosed by the invention is 46.1 MPa at 1,100 DEG C within 100 hours, and the persistent strength is 30.2 MPa at 1,300 DEG C within 100 hours.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a layered composite material and a preparation method thereof. Background technique [0002] Among platinum group metals, platinum is widely used in glass, glass fiber and other fields due to its high melting point, good corrosion resistance, good formability and weldability. However, platinum is expensive, and there are problems such as low strength, creep deformation and failure when used at high temperatures. Therefore, how to improve the high-temperature durable strength and creep resistance of platinum materials while reducing costs is the current research topic. hotspot. [0003] In order to reduce the cost of platinum materials, the Chinese patent document with application number 200610041466.1 discloses a strengthened platinum material and its manufacturing method, the outer layer of the strengthened platinum material is pure platinum, and the middle layer is...

Claims

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Application Information

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IPC IPC(8): B32B15/01
Inventor 杨宗伦刘伟廷杨颖
Owner 重庆亿煊新材料科技有限公司
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