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A kind of corrosion-resistant titanium alloy and preparation method thereof

A titanium alloy, corrosion-resistant technology, applied in the field of corrosion-resistant titanium alloy and its preparation, can solve problems such as low elastic modulus

Active Publication Date: 2020-09-04
中鼎特金秦皇岛科技股份有限公司 +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the widespread application of titanium and titanium alloys, the continuous development of medicine and the continuous attention to human health, the field of biomedicine has put forward more stringent requirements for the performance of titanium alloys. Traditional titanium alloys are in terms of elastic modulus and corrosion resistance. It is difficult to meet the requirements of the current human implant materials. As a human implant material, it should have a low elastic modulus to avoid human bone damage and osteoporosis caused by the stress shielding effect. It should also have excellent durability. Corrosion performance to meet the long-term normal service conditions in the environment of human body fluids

Method used

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  • A kind of corrosion-resistant titanium alloy and preparation method thereof
  • A kind of corrosion-resistant titanium alloy and preparation method thereof
  • A kind of corrosion-resistant titanium alloy and preparation method thereof

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preparation example Construction

[0030] The present invention also provides a method for preparing the corrosion-resistant titanium alloy described in the above technical solution, comprising the following steps:

[0031] (1) Obtain the as-cast alloy billet after melting the alloy raw material;

[0032] (2) carrying out solid solution treatment to the cast alloy billet obtained in the step (1) to obtain a solid solution billet;

[0033] (3) Annealing the solid solution billet obtained in the step (2) to obtain a corrosion-resistant titanium alloy.

[0034] In the invention, the alloy raw material is smelted to obtain the cast alloy billet. In the present invention, there is no special limitation on the type of the alloy raw material, and the alloy raw material smelted by titanium alloy well-known to those skilled in the art shall be based on the titanium alloy that can obtain the target composition. In the present invention, the alloy raw materials preferably include sponge titanium, sponge zirconium, pure ...

Embodiment 1

[0044] According to the alloy composition Ti-5Zr-0.25Pd (mass percentage), weigh 94.75g of industrial-grade titanium sponge, 5g of zirconium sponge, and 0.25g of pure palladium, soak them in absolute ethanol, clean them with ultrasonic waves, air-dry them, and place them in a non-consumable vacuum In the water-cooled copper crucible of the electric arc melting furnace, the vacuum degree in the furnace cavity should be pumped to 9×10 -3 Below Pa, after filling high-purity argon as protective gas before arc smelting, the arc temperature is about 2500°C during each smelting, and the smelting time is about 3 minutes. The ingot is turned over for smelting, so that the smelting-casting ingot is repeatedly smelted and turned over 6 times to ensure that the finally obtained ingot has a uniform composition.

[0045] Then take out the alloy ingot and put it into a vacuum / atmosphere tube furnace (SK-G06143 Tianjin Zhonghuan Experimental Electric Furnace Co., Ltd.), fill it with protectiv...

Embodiment 2

[0049] According to the alloy composition Ti-10Zr-0.04Pd (mass percentage), weigh 84.8g of industrial-grade titanium sponge, 10g of zirconium sponge and 0.2g of pure palladium, soak them in absolute ethanol, clean them with ultrasonic waves, air-dry them, and place them in a non-consumable vacuum In the water-cooled copper crucible of the electric arc melting furnace, the vacuum degree in the furnace cavity should be pumped to 9×10 -3 Below Pa, after filling high-purity argon as protective gas before arc smelting, the arc temperature is about 2500°C during each smelting, and the smelting time is about 3 minutes. The ingot is turned over for smelting, and the smelting-casting ingot is repeatedly smelted and turned over 8 times to ensure that the finally obtained ingot has a uniform composition.

[0050] Then take out the alloy ingot and put it into a vacuum / atmosphere tube furnace (SK-G06143 Tianjin Zhonghuan Experimental Electric Furnace Co., Ltd.), fill it with protective gas...

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Abstract

The invention provides corrosion-resistant titanium alloy. The corrosion-resistant titanium alloy comprises, by weight, 0.04-0.25% of Pd, higher than 0% and lower than or equal to 50% of Zr and the balance Ti. The corrosion-resistant titanium alloy has the advantages that the contents of various elements are strictly controlled, effects of improving the crevice corrosion resistance of the corrosion-resistant titanium alloy mainly can be realized by the Pd elements in the corrosion-resistant titanium alloy, and anti-pollution effects of the hydrogen absorption ability of the surfaces of the corrosion-resistant titanium alloy can be improved; the Zr elements are added on the basis of the Pd elements, the Zr used as passive metal is negative in initiating passive potential as compared with the Ti and is high in passivation ability, accordingly, passive films can be easily generated on the surfaces of the corrosion-resistant titanium alloy, and the corrosion resistance of the corrosion-resistant titanium alloy in diversified corrosive media can be enhanced; as shown by experimental results, the enhancement amplitude of the corrosion resistance of the corrosion-resistant titanium alloyin sodium chloride solution can reach 11.28-66.29% as compared with comparison alloy (Ti-0.04Pd) obtained by the aid of identical treatment processes.

Description

technical field [0001] The invention relates to the technical field of titanium alloys, in particular to a corrosion-resistant titanium alloy and a preparation method thereof. Background technique [0002] With a series of advantages such as high specific strength, high specific modulus, and corrosion resistance, titanium alloy has a wide range of application advantages, and has been valued in many fields such as marine engineering, aerospace, biomedicine, metallurgy, chemical industry, and light industry. [0003] With the widespread application of titanium and titanium alloys, the continuous development of medicine and the continuous attention to human health, the field of biomedicine has put forward more stringent requirements for the performance of titanium alloys. Traditional titanium alloys are in terms of elastic modulus and corrosion resistance. It is difficult to meet the requirements of the current human implant materials. As a human implant material, it should hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C14/00C22C16/00C22C30/00C22F1/18
CPCC22C1/02C22C14/00C22C16/00C22C30/00C22F1/002C22F1/18C22F1/183C22F1/186
Inventor 刘日平刘曙光周奕年马明臻张兵李波张新宇罗雷
Owner 中鼎特金秦皇岛科技股份有限公司
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