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A kind of yttrium-aluminum master alloy and preparation method thereof

An intermediate alloy, yttrium-aluminum technology, applied in the field of aluminum alloys, can solve problems such as the method of reducing carbon by undiscovered price-changing elements, and achieve the effects of easy industrial promotion and application, low input cost, and simple operation

Active Publication Date: 2022-02-22
GRIREM ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, no method for reducing carbon by introducing variable valence elements has been found

Method used

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  • A kind of yttrium-aluminum master alloy and preparation method thereof
  • A kind of yttrium-aluminum master alloy and preparation method thereof
  • A kind of yttrium-aluminum master alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The raw material for electrolysis is a mixture of yttrium oxide, aluminum oxide, and samarium oxide, among which samarium oxide is the oxide of samarium, a variable valence element, and the mass ratio of each oxide is: w (氧化钇) :w (氧化铝) :w (氧化钐) =260:39:1, the mass ratio of variable valence samarium element added in the electrolytic raw material is 0.29%;

[0056] The electrolyte is composed of lithium fluoride, sodium fluoride, yttrium fluoride, and aluminum fluoride, and the mass ratio of each fluoride is: w (氟化锂) :w (氟化钠) :w (氟化钇) :w (氟化铝) =2:1:12:24;

[0057] Electrolysis temperature is 1050~1100℃;

[0058] The mass content of the main elements of the obtained Y-Al alloy is: [Y] = 85-93%, [Al] = 7-15%, [Sm] ≤ 0.08%, [Fe] ≤ 0.15%, [C] ≤ 0.04% .

[0059] Correspondingly, in order to compare the carbon reduction effect of variable valence element samarium, a comparative experiment was carried out. In the experiment:

[0060] The electrolytic raw material is a m...

Embodiment 2

[0066] The raw material for electrolysis is a mixture of yttrium oxide, aluminum oxide, and ytterbium oxide, in which ytterbium oxide is the oxide of ytterbium variable price element, and the mass ratio of each oxide is: w (氧化钇) :w (氧化铝) :w (氧化镱) =17:3:1, the mass content of variable valence ytterbium element in the electrolytic raw material is 4.18%;

[0067] The electrolyte is composed of lithium fluoride, sodium fluoride, yttrium fluoride, and aluminum fluoride, and the mass ratio of each fluoride is: w (氟化锂) :w(氟化钠) :w (氟化钇) :w (氟化铝) =2:1:12:24;

[0068] The electrolysis temperature is 1050-1100°C, and the mass content of the main elements of the obtained Y-Al alloy is: [Y]=85-93%, [Al]=7-15%, [C]≤0.035%, [Yb]≤0.2 %, [Fe]≤0.15%.

Embodiment 3

[0070] The raw material for electrolysis is a mixture of yttrium oxide, aluminum oxide, and ytterbium oxide, in which ytterbium oxide is the oxide of ytterbium variable price element, and the mass ratio of each oxide is: w (氧化钇) :w (氧化铝) :w (氧化镱) =36:6:1, the mass content of variable valence ytterbium element in the electrolytic raw material is 2.04%;

[0071] The electrolyte is composed of lithium fluoride, sodium fluoride, yttrium fluoride, and aluminum fluoride, and the mass ratio of each fluoride is: w (氟化锂) :w (氟化钠) :w (氟化钇) :w (氟化铝) =2:1:12:24;

[0072] The electrolysis temperature is 1050-1100°C, and the mass content of the main elements of the obtained Y-Al alloy is: [Y]=85-93%, [Al]=7-15%, [C]≤0.041%, [Yb]≤0.2 %, [Fe]≤0.15%.

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Abstract

The invention relates to a yttrium-aluminum master alloy and a preparation method thereof. By introducing a valence-changing element, the valence-changing element reacts with carbon in the electrolyte to form a compound, and then removes carbon impurities in the compound through an anode electrochemical reaction to weaken the yttrium-aluminum alloy and carbon. The role of reducing carbon content in yttrium aluminum alloy. The carbon content in the obtained yttrium aluminum master alloy is within 0.05%. The method of the invention is simple and convenient, the operation is simple, the input cost is low, and it is easy for industrial popularization and application.

Description

technical field [0001] The invention relates to the field of aluminum alloys, in particular to an yttrium-aluminum master alloy and a preparation method thereof. Background technique [0002] As a typical lightweight material, aluminum alloy has excellent characteristics such as high strength, low density, good thermal conductivity, small thermal expansion coefficient, and strong corrosion resistance. It is widely used in machinery, chemical industry, automobile, aviation, aerospace, ships and other fields. Rare earth yttrium has a strong effect of purifying aluminum liquid, refining grain, modifying and alloying. Adding rare earth yttrium to aluminum or aluminum alloy can greatly improve the performance of aluminum alloy, which can not only expand the application of aluminum alloy, but also promote the development of rare earth resources. High value utilization. [0003] The methods of adding rare earth yttrium to aluminum or aluminum alloy mainly include two types: ① addi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/34C22C28/00
CPCC25C3/34C22C28/00
Inventor 庞思明杨宏博卢文礼陈德宏张小伟苗睿瑛吴道高王爽刘鑫
Owner GRIREM ADVANCED MATERIALS CO LTD