CN-121992236-A - Preparation method and application of molybdenum-titanium alloy material

Abstract

The invention relates to the technical field of molybdenum-titanium alloy materials, in particular to a preparation method and application of a molybdenum-titanium alloy material, wherein the preparation method of the molybdenum-titanium alloy material comprises the following steps of 1, adopting a ball mill to fully mix molybdenum powder and titanium powder under the protection of inert gas; the method comprises the steps of (1) forming mixed powder into a billet by compression molding, step (3) heating and sintering the billet under the protection of inert gas, step (4) processing the sintered compact alloy block into a product by forging, rolling or extrusion, wherein in the preparation process of the prepared molybdenum-titanium alloy material, after the molybdenum powder and the titanium powder are treated by deionized water, some impurities on the surface can be removed, after the molybdenum powder and the titanium powder are wrapped by water, oxygen is not easy to accumulate on the surface, in the subsequent ball milling process, the oxygen can be effectively prevented from being clamped between the molybdenum powder and the titanium powder, the molybdenum powder and the titanium powder are not easy to oxidize, the final billet is not easy to crack in the sintering process, and the quality of the product is ensured.

Inventors

• MAO SINING
• CHEN LONGLONG
• CHEN LINGPENG
• CHEN XIAOXIAO

Assignees

• 亚芯半导体材料(江苏)有限公司

Dates

Publication Date

20260508

Application Date

20260129

Claims (10)

1. 1. The preparation method of the molybdenum-titanium alloy material is characterized by comprising the following steps of: Step 1, fully mixing molybdenum powder and titanium powder by adopting a ball mill under the protection of inert gas; step 2, pressing and forming the mixed powder to form a billet; Step 3, heating and sintering the billets under the protection of inert gas, wherein the sintering temperature is 1200-1600 ℃ and the sintering time is 2-12 hours, so that a closely-adhered gold block is formed; step 4, forging, rolling or extruding the sintered compact alloy blocks to obtain products; In the step 1, the molybdenum powder and the titanium powder before mixing contain water, and the water content in the mixture of the molybdenum powder and the titanium powder is 5-30%.
2. 2. The method for preparing the molybdenum-titanium alloy material according to claim 1, wherein in the step 1, molybdenum powder and titanium powder are added into deionized water, the deionized water is heated to boiling, the temperature is kept for 20-30min, after standing, excessive water is removed while the mixture is hot, the water content of the molybdenum powder and the titanium powder is controlled to be 5% -30%, and the molybdenum powder and the titanium powder are rapidly placed into a ball mill.
3. 3. The method according to claim 2, wherein in the step 1, when removing the excessive moisture in the molybdenum powder and the titanium powder, the temperature of the mixture is higher than 80 ℃, and the excessive moisture is removed by filtration, centrifugation or pouring.
4. 4. The method for preparing a molybdenum-titanium alloy material according to claim 3, wherein in the step 1, the mass fraction of the titanium powder in the mixture of the molybdenum powder and the titanium powder is 0.45% -0.55%.
5. 5. The method for preparing a molybdenum-titanium alloy material according to claim 4, wherein in the step 1, before the ball mill is filled with inert gas, vacuum pumping treatment is performed, after ball milling, when no steam is detected at the air flow outlet, the ball milling is finished, and the ball milling temperature is 60-80 ℃.
6. 6. The method according to claim 1, wherein the inert gas in step 1 is one of nitrogen, helium, neon and argon, and the inert gas in step 2 is one of helium, neon and argon.
7. 7. The method according to claim 1, wherein in the step 2, the pressure of the press forming is 150-400MPa.
8. 8. The method for preparing a molybdenum-titanium alloy material according to claim 1, wherein in the step 4, the deformation is controlled to be 40% -80% when the compact alloy block is processed into a product.
9. 9. The method according to claim 1, wherein in the step 4, after obtaining the product, annealing the product.
10. 10. Use of the molybdenum-titanium alloy material according to any one of claims 1-9 in the field of targets.

Description

Preparation method and application of molybdenum-titanium alloy material Technical Field The invention relates to the technical field of molybdenum-titanium alloy materials, in particular to a preparation method and application of a molybdenum-titanium alloy material. Background The molybdenum-titanium alloy is an alloy based on molybdenum, a small amount of titanium element is added, and the best known molybdenum-titanium alloy is Mo-0.5Ti alloy. The preparation method of the molybdenum-titanium alloy mainly comprises a powder metallurgy method and a smelting method, wherein the powder metallurgy method is to mix high-purity molybdenum powder, titanium hydride powder and graphite powder according to the component requirements, press the mixture into a billet by compression molding or isostatic pressing, and sinter the billet into the billet by vertical melting or indirect heating under the protection of hydrogen. The smelting method is to smelt high purity molybdenum bar, carbon-containing molybdenum bar and alloy element titanium into cast ingot by vacuum arc or electron beam according to the requirement. In the preparation process of the molybdenum-titanium alloy, the situation of cracking of the alloy block can occur in the sintering process, mainly because the molybdenum powder and the titanium powder are easy to oxidize, and oxides (such as TiO 2、MoO3) on the surface of the powder can prevent metal atoms from diffusing and combining among particles during sintering to form a weak area and become a crack source under stress. Oxygen uptake by titanium also results in the formation of brittle phases (e.g., oxygen stable alpha phase). Therefore, we propose a preparation method and application of molybdenum-titanium alloy material to solve the above problems. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a preparation method and application of a molybdenum-titanium alloy material. A preparation method of a molybdenum-titanium alloy material comprises the following steps: Step 1, fully mixing molybdenum powder and titanium powder by adopting a ball mill under the protection of inert gas; step 2, pressing and forming the mixed powder to form a billet; Step 3, heating and sintering the billets under the protection of inert gas, wherein the sintering temperature is 1200-1600 ℃ and the sintering time is 2-12 hours, so that a closely-adhered gold block is formed; step 4, forging, rolling or extruding the sintered compact alloy blocks to obtain products; In the step 1, the molybdenum powder and the titanium powder before mixing contain water, and the water content in the mixture of the molybdenum powder and the titanium powder is 5-30%. Preferably, in the step 1, molybdenum powder and titanium powder are added into deionized water, the deionized water is heated to boiling, the temperature is kept for 20-30min, after standing, the excessive moisture is removed while the mixture is hot, the water content of the molybdenum powder and the titanium powder is controlled to be 5% -30%, and the molybdenum powder and the titanium powder are rapidly placed into a ball mill. Preferably, in the step 1, when removing the excessive moisture in the molybdenum powder and the titanium powder, the temperature of the mixture should be ensured to be higher than 80 ℃, and the mode of removing the excessive moisture is filtration, centrifugation or pouring. Preferably, in the step 1, the mass fraction of the titanium powder in the mixture of the molybdenum powder and the titanium powder is 0.45% -0.55%. Preferably, in the step 1, before the ball mill is filled with the inert gas, vacuum pumping treatment is performed, after ball milling, when no steam is detected at the air flow outlet, the end point of ball milling is the ball milling end point, and the ball milling temperature is 60-80 ℃. Preferably, the inert gas in the step 1 is one of nitrogen, helium, neon and argon, and the inert gas in the step 2 is one of helium, neon and argon. Preferably, in the step 2, the pressure of the compression molding is 150-400MPa. Preferably, in the step 4, the deformation amount is controlled to be 40% -80% when the compact alloy block is processed into a product. Preferably, in the step 4, after the product is obtained, annealing treatment is performed on the product. Preferably, the molybdenum-titanium alloy material is applied to the field of targets. The preparation method has the beneficial effects that in the preparation process, after the molybdenum powder and the titanium powder are treated by deionized water, some impurities on the surface can be removed, after the molybdenum powder and the titanium powder are wrapped by water, oxygen is not easy to accumulate on the surface, in the subsequent ball milling process, the oxygen can be effectively prevented from being clamped between the molybdenum powder and the titanium powder, the molybdenum powder and the titanium powder are not easy to o