Powder surface treating agent, titanium or titanium alloy powder surface treatment method and composite powder

A technology of powder surface treatment and titanium alloy powder, which is applied in the field of powder surface treatment agents and composite powders, can solve the problems of poor activity and high cost, achieve low cost, reduce process cost, and improve operability

Active Publication Date: 2019-06-07
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The surface treatment method makes the surface of titanium or titanium alloy powder form an organic coating layer, which can inhibit the increase of oxygen content in the later use and transportation of titanium or titanium alloy powder,

Method used

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  • Powder surface treating agent, titanium or titanium alloy powder surface treatment method and composite powder
  • Powder surface treating agent, titanium or titanium alloy powder surface treatment method and composite powder
  • Powder surface treating agent, titanium or titanium alloy powder surface treatment method and composite powder

Examples

Experimental program
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Example Embodiment

[0035] (1) Preparation of powder surface treatment agent: isopropyl tris(dioctyl pyrophosphate acyloxy) titanate, isopropoxy dioleic acid acyloxy (dioctyl phosphate acyloxy) titanic acid Ester, isopropyl tris(dioctyl phosphate acyloxy) titanate or isopropyl tris(dioctyl pyrophosphoryl) titanate dissolved in xylene or toluene to obtain a mass volume concentration of 0.001-0.004g / mL solution, and then at least one of polystyrene (PS) and ABS plastic is dissolved in the above solution to obtain a solution with a mass volume concentration of 0.005-0.04 g / mL.

[0036] (2) Add hydrogenated dehydrogenated titanium or titanium alloy powder with a median particle size D50 of 10-40μm and an oxygen content of 0.15wt.% or less into the powder surface treatment agent of step (1), seal the inert gas, and mechanically stir 0.1 -0.5h, then ultrasonic treatment in an ultrasonic cleaner for 0.1-0.6h to prepare a slurry with a solid-liquid ratio of 1.2-3.5g / mL.

[0037] (3) Drying the slurry in ste...

Example Embodiment

[0039] Example 1:

[0040] Using hydrogenated dehydrogenated titanium powder with a median particle size of 12.3μm and an oxygen content of 0.15wt.% as the raw material, the scanning electron microscope morphology photo is figure 1 Shown.

[0041] Dissolve NDZ-201 in xylene organic solvent to prepare a solution with a uniform concentration of 0.003g / mL, and then dissolve PS in the solution to prepare a solution with a uniform concentration of 0.02g / mL.

[0042] Then, the raw material powder is added to the prepared solution, sealed with high-purity inert gas protection, mechanically stirred for 0.5h, and then ultrasonically treated in an ultrasonic cleaner for 0.2h to prepare a slurry with a solid-liquid ratio of 2.6g / mL.

[0043] The prepared slurry was taken out, put into a vacuum drying oven, and dried at 40°C for 1 hour to obtain composite powder.

[0044] The prepared composite powder is used in a powder metallurgy process: it is packed into a soft film and cold isostatically press...

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Abstract

The invention discloses a powder surface treating agent, titanium and titanium alloy powder surface treatment method and composite powder. The powder surface treating agent comprises an organic polymer, a titanate coupling agent and an organic solvent, wherein the organic polymer is at least one of polystyrene and ABS (acrylonitrile butadiene styrene) plastic, the organic solvent is xylene or methylbenzene, the concentration of the organic polymer is 0.005-0.04g/mL, and the concentration of the titanate coupling agent is 0.001-0.004g/mL. The powder surface treating agent is used for carrying out surface treatment on titanium or titanium alloy powder, so that an organic matter coating layer is formed on the surface of the titanium or the titanium alloy powder, the increase of the oxygen content in the later use and transportation processes can be inhibited, the mechanical performance is improved, and the technical problems of poor activity and high cost in the application of the HDH titanium and titanium alloy powder in a high-end titanium product in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a powder surface treatment agent, a surface treatment method for titanium and titanium alloy powder, and a composite powder. Background technique [0002] Titanium and titanium alloys are widely used in various fields such as aerospace, marine engineering, and medical materials because of their low density, high specific strength, good corrosion resistance, and good biocompatibility. However, the titanium and titanium alloys prepared by the traditional casting process are complicated, the material loss is large during secondary processing, and there are problems such as low production efficiency, high production cost, and difficulty in manufacturing parts with complex shapes, which seriously limit the industrialization of titanium and titanium alloys. application level. As an efficient, high-quality, precise and energy-saving near-end forming technology, powder metallu...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F3/04B22F3/10C22C1/05C22C14/00C22C1/10
Inventor 路新潘宇李维斌杨芳曲选辉
Owner UNIV OF SCI & TECH BEIJING
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