A kind of nickel-platinum alloy foam and preparation method thereof
The preparation of foam nickel-platinum alloys by starch sol gel method solves the problems of high production costs and unstable performance in the prior art, realizes precise component control and large-scale production, and reduces process complexity and energy consumption.
CN117107103BActive Publication Date: 2025-03-28KUNMING INST OF PRECIOUS METALS +2
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Patent Information
- Application Number
- CN202311088879.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-28
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2043-08-28
AI Technical Summary
Technical Problem
The existing preparation process of nickel-platinum foam alloys has problems such as high production costs, unstable performance and difficulty in achieving large-scale production.
Method used
The aging time and heat treatment conditions of the sol were controlled by the starch sol gel method, and the foam nickel platinum alloy with a three-dimensional continuous pore structure was prepared by controlling the aging time and heat treatment conditions.
Benefits of technology
The composition of foam nickel-platinum foam alloy is accurately controlled, reducing production costs, simplifying the process flow, and can be directly prepared in aqueous solution without the need for high-temperature multi-step heat treatment.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a nickel-platinum foam alloy and a preparation method thereof, and belongs to the technical field of metal foam. The preparation method comprises: mixing the above-mentioned chloroplatinic acid solution and nickel nitrate solution according to the molar ratio of Ni:Pt:starch of 3:1:40 and adding starch; then adding Tween 20 and stirring to obtain a sol, drying to obtain a wet gel, aging the wet gel in air and room temperature for 2 weeks and then heat treating to obtain a nickel-platinum foam alloy. The invention uses nickel nitrate and chloroplatinic acid as metal precursors, realizes precise component control by controlling the ratio of nickel-platinum precursors, and uses soluble starch as a chelating agent, and the soluble starch and Tween 20 are compounded to control the degree of development of a three-dimensional space network, and the obtained nickel-platinum foam alloy has a three-dimensional, continuous pore structure. In addition, the preparation method of the invention is simple, the production cost is low, and the chelating agent used is green and low in cost, and the metal precursor is less toxic and easy to handle.
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