Unlock instant, AI-driven research and patent intelligence for your innovation.

Spherical tantalum-titanium alloy powder, product containing same and method of making same

A technology of alloy powder and titanium alloy, which is applied in the fields of alloy metal, new tantalum-titanium alloy powder, and tantalum-titanium alloy powder, can solve the problems of low cycle fatigue and weldability, poor tensile properties, low physical properties, etc.

Pending Publication Date: 2022-03-18
GLOBAL ADVANCED METALS USA
View PDF27 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with these methods is that instead of forming a true homogeneous alloy, a mixture is formed which results in non-homogeneous properties due to regions of unalloyed metal (i.e. Ta and or Ti) resulting in Suboptimal physical properties (e.g. strength, elongation, toughness) and / or low cycle fatigue and weldability
[0006] When such blended powders are used as raw material (feed material) in additive manufacturing, again, inconsistent properties can be obtained in the articles obtained by the additive manufacturing process, such as non-alloyed Domains of Ta and / or Ti, and / or non-uniform grain structure, which can potentially lead to poor tensile properties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spherical tantalum-titanium alloy powder, product containing same and method of making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0191] Example 1 - Theory

[0192] In this example, spherical Ta-Ti powder was formed. First, a base batch of alloy powder is used, and it has a 0.1m 2 / g BET. This base batch of tantalum powder (sodium reduced powder) was mixed with commercially available titanium powder (which has a 0.4m 2 / g of BET, obtained from Ti sponge) blended. The blending amount of tantalum and titanium was 80% by weight of tantalum powder and 20% by weight of titanium powder. The blended powder mixture was then pressed and sintered into green logs using a sintering temperature of 2500°C to 3000°C for 3 hours. The raw logs are fed into an electron beam furnace where the metal is melted via a crucible. The melt is drawn through a die where it solidifies and forms an alloy ingot. Subsequently, the alloy ingot was remelted two more times using the same electron beam process. The resulting alloy ingot was then hydrogenated using a high temperature furnace accompanied by a hydrogen atmosphere, and ...

Embodiment 2-

[0197] Example 2 - Theory

[0198] The alloy powder of Example 1 is used in 3D printing or additive manufacturing process. Specifically, the alloy build was performed on an EOS M290 using a build volume of 250x250x325mm and a maximum laser power of 400W. The substrate used was Type 316 austenitic chromium-nickel stainless steel.

[0199] In experiments, the spheroidized alloy powder of Example 1 was sufficient for laser powder bed (L-PBF) printing and produced fully dense tensile samples with alternating solid and mesh exteriors and prominent overhangs. strips and demonstration components. Specifically, tensile splines were printed using a 1 mm oversize relative to standard dimensions (ASTM E8). The splines were machined to final dimensions on a lathe. Tensile properties were measured on an Instron 4210 tensile testing machine. Tensile splines are analyzed for their microstructure and hardness. For microstructural analysis, samples were mounted in epoxy resin and cut out...

Embodiment 3

[0202] Embodiment 3 (part practical-part theory)

[0203] Salt-encapsulated alloy powders with a mass ratio of Ta to Ti of 80:20 were produced (actually) by a combustion synthesis process as described in US Patent No. 7,442,227. Pass titanium chloride and carbon chloride (halides) in the vapor state through the center tube to 4 to TaCl 5 A mass ratio of 0.67 was introduced into the reactor together with argon. A concentric Ar flow is positioned between the halide and the vaporous Na flow provided in excess. As described in US Patent No. 7,442,227, the sodium chloride by-product acts as a condensable vaporous material to stall the sintering behavior of the particles. The salt-encapsulated metal alloy powder was collected and washed with deionized water to remove the sodium chloride coating. Use dilute nitric acid to help settle the particles. This washing process introduces a thin oxide passivation layer onto the surface of the particles, which is retained (maintained) wh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

Highly spherical tantalum-titanium alloy powders are described. The alloy powder may be used in additive manufacturing and other applications. Further described are methods of making the alloy powder, as well as methods of utilizing the alloy powder in an additive manufacturing process. Products and articles obtained using the alloy powder are also described.

Description

Background technique [0001] This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 62 / 876,018, filed July 19, 2019, which is incorporated herein by reference in its entirety. [0002] The present invention relates to alloy metals, particularly tantalum-titanium alloys, and products made from tantalum-titanium alloys, and methods of making and processing said tantalum-titanium alloys. [0003] Valve metal (valve metal) powders such as tantalum powders are generally used in the production of capacitor electrodes among their many applications, but have other uses outside this industry (for example, in the sputtering target industry, the military field, the aerospace industry), and in view of Due to its properties, tantalum holds promise in the field of medical and dental implants. [0004] While tantalum has been used alone in the field of medical and dental implants, other metals such as titanium have been utilized because of pric...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C27/02B22F1/065B22F1/142B22F5/00B22F5/10B22F10/10B22F10/12B22F10/20B22F10/22B22F10/28A61L27/06A61L27/50A61L31/02A61L31/14B33Y10/00B33Y70/00B33Y80/00B22F1/05
CPCC22C14/00C22C27/02B22F5/00B22F5/10B22F10/28B22F10/22B22F10/12B22F10/10A61L27/06A61L27/50A61L31/022A61L31/14B33Y10/00B33Y70/00B33Y80/00A61L2400/18A61L2430/12B22F10/25B22F10/34B22F1/05B22F1/065B22F1/142B22F2998/10C22C1/02B22F9/023B22F2009/041B22F9/04B22F1/145B22F2202/13B22F2999/00B22F2201/04B22F2201/01A61C8/0012A61C8/0015C22C1/0458C22C1/045B22F10/14Y02P10/25B22F10/00B22F9/06B22F3/11B22F9/16B22F2304/10B22F2301/205B22F9/082
Inventor C.桑盖尔A.阿比德
Owner GLOBAL ADVANCED METALS USA