A method for in situ enhancing high temperature oxidation resistance of copper chromium zirconium alloy
A high-temperature oxidation resistance and copper-chromium-zirconium technology, which is applied in the field of in-situ enhanced high-temperature oxidation resistance of copper-chromium-zirconium alloys, can solve problems such as high-temperature oxidation and lack of high-temperature oxidation resistance, and achieve economical savings, simple process, and optimized high temperature The effect of antioxidant properties
Inactive Publication Date: 2019-02-22
临沂市科创材料有限公司
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
As a copper alloy material, copper-chromium-zirconium alloy still faces the problem of high-temperature oxidation, and there is no research on how to improve its own high-temperature oxidation resistance by optimizing the alloy microstructure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The present invention will be further described below in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, a method for in situ enhancing high temperature oxidation resistance of copper chromium zirconium alloy, comprising:
[0029] The copper-chromium-zirconium alloy after solid solution is subjected to equal angular extrusion treatment, and a large number of dispersed dislocation defects are formed inside the alloy material, and these defects are used as the nucleation points for the precipitation of the second phase particles during the subsequent cryogenic treatment. Facilitate the dispersed distribution of precipitated phase;
[0030] During the cryogenic treatment, the thermodynamic conditions of the precipitation process are adjusted, and the dislocation defects are used as nucleation points to reduce the nucleation activation energy;
[0031] During cryogenic treatment, the kinetic conditions of the precipitation process are adjus...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for in-situ enhancement of high-temperature oxidation resistance of Cu-Cr-Zr alloy. The method is characterized in that equal channel angular pressing treatment is performed on the Cu-Cr-Zr alloy subjected to solution treatment, lots of dislocation defects in dispersed distribution are formed in the alloy material, the defects serve as nucleation points for precipitation of second-phase particles during follow-up subzero treatment, and dispersed distribution of precipitated phases is facilitated; during subzero treatment, thermodynamic conditions of the precipitation process are regulated and controlled to enable the dislocation defects to serve as the nucleation points, so that the nucleation activation energy is reduced; and during subzero treatment, dynamic conditions of the precipitation process are regulated and controlled to control the situations that the precipitation driving force under the subzero conditions is increased and the atomic diffusion transfer capability is reduced, and the Cu-Cr-Zr alloy with high-temperature oxidation resistance is obtained after subzero treatment. Compared with the prior art, through technological and parameter optimization, the precipitation behaviors of the precipitation phases are finely regulated and controlled, uniform and compact nano-particles are subjected to in-situ precipitation, and the high-temperature oxidation resistance of the Cu-Cr-Zr alloy is optimized for the first time.
Description
technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a method for in-situ enhancing the high-temperature oxidation resistance of a copper-chromium-zirconium alloy. Background technique [0002] With the development of power devices and the improvement of IC integration, lead frame materials need to have higher electrical conductivity, thermal conductivity, oxidation resistance and excellent mechanical properties, especially excellent oxidation resistance at high temperatures. It is particularly worth noting that in the existing soldering process in the industry, the connection between the chip and the lead frame usually needs to be heated above a certain temperature (the temperature refers to the melting point of the solder), in order to avoid the oxidation of the copper-based lead frame. Welding defects often require a reducing gas (95%N 2 +5%H 2 Synthetic gas, that is, nitrogen-hydrogen mixture),...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22F1/08
CPCC22C9/00C22F1/08
Inventor 宋忠孝马凌志陈凯薛佳伟秦利明李雁淮虞海亮
Owner 临沂市科创材料有限公司