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A kind of low temperature sensitive high conductivity aluminum alloy and preparation method and application

A high-conductivity, aluminum-alloy technology, applied in the direction of metal/alloy conductors, can solve problems that are difficult to apply, do not grasp the law of conductivity changes, and do not involve high-temperature conductivity, etc., to reduce DC power consumption per ton of aluminum and ensure safety and stability sexual effect

Active Publication Date: 2019-08-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent does not involve high-temperature electrical conductivity, and does not grasp the change law of electrical conductivity with temperature rise, so it is difficult to apply to occasions with high service temperature

Method used

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  • A kind of low temperature sensitive high conductivity aluminum alloy and preparation method and application
  • A kind of low temperature sensitive high conductivity aluminum alloy and preparation method and application
  • A kind of low temperature sensitive high conductivity aluminum alloy and preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The mass percent of each element of the design alloy is: B is 0.05%, Yb is 0.05%, the balance is Al and trace unavoidable impurity elements. The ingot was obtained by casting according to the designed components. The conductivity measured at 20°C was 60.9%. After being kept at 350°C for 4 hours, the conductivity measured at 20°C was 61.7%, and the conductivity measured at 150°C was 42.4%. %, the conductivity measured at 200°C is 38.5%.

Embodiment 2

[0044] The mass percentage of each element of the design alloy: B is 0.05%, Yb is 0.10%, the balance is Al and trace unavoidable impurity elements. The ingot was obtained by casting according to the designed components. The conductivity measured at 20°C was 60.7%. After holding at 400°C for 3 hours, the conductivity measured at 20°C was 61.6%, and the conductivity measured at 150°C was 42.7%. , The conductivity measured at 200°C was 40.0%.

Embodiment 3

[0046] The mass percentage of each element of the design alloy: B is 0.05%, Yb is 0.20%, the balance is Al and trace unavoidable impurity elements. The ingot was obtained by casting according to the designed components. The conductivity measured at 20°C was 60.2%. After being kept at 400°C for 3 hours, the conductivity measured at 20°C was 61.1%, and the conductivity measured at 150°C was 42.6%. %, the conductivity measured at 200°C is 40.1%.

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Abstract

The invention relates to a low-temperature sensitive high-conductivity aluminum alloy, and a preparation method and application thereof and belongs to the technical field of new electric materials. The aluminum alloy comprises, by mass, 0.02-0.08% of B, 0.05-0.20% of Yb, 0-0.10% of Sc, and the balance Al and trace of inevitable impurity elements. The preparation method of the low-temperature sensitive high-conductivity aluminum alloy comprises the steps of conducting smelting, refining and rapid feed component analysis, conducting component adjustment according to the designed material component ratio, conducting heat preservation and standing, conducting quick cooling and casting to obtain an aluminum alloy ingot, and then conducting stabilizing treatment at 250-450 DEG C for 2-8 h. The reduction degree of the electric conductivity of the aluminum alloy designed and prepared according to the method is relatively small along with temperature rising. The aluminum alloy can be used for manufacturing cathode buses, anode guide rods and / or electric wires and cables with high service temperature for aluminum electrolysis.

Description

technical field [0001] The invention relates to a low-temperature-sensitive high-conductivity aluminum alloy, a preparation method and an application thereof, and belongs to the technical field of new electrical materials. [0002] technical background [0003] When the metal is subjected to an external electric field, the carriers move directionally in the lattice field formed by the periodically arranged ions to form a current. Those abnormal ions or lattice atoms that destroy the periodicity of the lattice field collide or Resistance and Joule heating are generated by hindering the directional moving carriers. Alloying elements, impurities, crystal defects, etc. will cause periodic damage to the lattice field, shorten the mean free path of conductive electrons, and increase the resistivity of the alloy. [0004] The resistivity of conductor materials usually increases greatly with the increase of temperature, which in turn leads to a greater temperature rise. When the tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03C22F1/04C25C3/08C25C3/12H01B1/02
Inventor 李红英赵辉
Owner CENT SOUTH UNIV