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
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[0028] The present invention also provides a method for preparing a layered composite material, including the following steps:
[0029] Alloying, melting, casting, and powdering the first precious metal with one or more of Zr, Y, La and Er to obtain Pt-based multi-element alloy powder, where the first precious metal is Pt and / or Rh;
[0030] The second noble metal is alloyed, melted and casted with one or more of Zr, Y, La and Er to obtain Pd-based multi-element alloy powder, where the second noble metal is Pd and / or the third noble metal, The third precious 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 to perform internal oxidation-sintering treatment, hot pressing forming and forging processing to obtain a layered composite material.
[0032] In the present invention, the first noble metal and one or more of Zr, Y, La, and Er are alloyed, cast, and powdered, specifically: the first noble me...
Example Embodiment
[0039] Example 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, a Pt-based multi-element alloy containing 0.10wt% Zr and 0.12wt% La is melted 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, a Pd-based multi-element alloy containing 0.10wt% of Zr and 0.08wt% of La was melted in a vacuum induction melting furnace;
[0042] Separately preparing 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 by powder metallurgy;
[0043] Take 500 grams of the Pt-based multi-element alloy powder into the bottom layer of the platinum box for tamping and smoothing, and then put 4000 grams of Pd-based multi-element alloy powder on the Pt-based alloy powder and tamping it smoothly, and then put 500 grams of Pt-based multielement alloy powder The alloy powder...
Example Embodiment
[0045] Example 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, a Pt-based multi-element alloy containing 0.10wt% Zr and 0.12wt% La is melted 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, a Pd-based multi-element alloy containing 0.10wt% of Zr and 0.08wt% of La was melted in a vacuum induction melting furnace;
[0048] Separately preparing 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 by powder metallurgy;
[0049] Take 1000 grams of the Pt-based multi-element alloy powder into the bottom layer of the platinum box to tamping and smooth, and then put 3000 grams of the Pd-based multi-element alloy powder on the Pt-based alloy powder and tamping it, and then put 1000 grams of the Pt-based multi-element alloy powder The alloy powder i...
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