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High sphericity Cr base alloy-tib 2 Micronano powder and preparation method thereof

A high sphericity, base alloy technology, applied in the direction of metal processing equipment, energy efficiency, process efficiency, etc., can solve the problems of large particle size distribution gap, poor bonding strength, poor fluidity, etc., to achieve small particle size gap , Enhance hardness, increase ductility and density

Active Publication Date: 2022-06-24
ZHONGSHAN FLASHLIGHT POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of high sphericity Cr base alloy-TiB 2 Micro-nano powder, used for thermal spraying / additive manufacturing to prepare parts with nano-protective coatings, solve the problems of large particle size distribution, poor fluidity and poor bonding strength of existing powder materials, and improve and increase Anti-corrosion and anti-erosion wear ability of nano protective coating

Method used

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  • High sphericity Cr base alloy-tib <sub>2</sub> Micronano powder and preparation method thereof
  • High sphericity Cr base alloy-tib <sub>2</sub> Micronano powder and preparation method thereof
  • High sphericity Cr base alloy-tib <sub>2</sub> Micronano powder and preparation method thereof

Examples

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Effect test

Embodiment 1

[0037] Example 1: See attached figure 1 to attach Figure 7 , this embodiment provides a high sphericity Cr-based alloy-TiB 2 Micro-nano powder, including nano-sized TiB 2 Powder and Cr-based alloy powder, by mass percentage, the nanoscale TiB 2 The percentages of the powder and the Cr-based alloy powder in the total mass of the micro-nano powder are respectively:

[0038] nano-TiB 2 Powder 45%;

[0039] Cr-based alloy powder 55%,

[0040] The Cr-based alloy powder is CoCr alloy powder, and the percentages of each element in the CoCr alloy powder to the CoCr alloy powder are: Co 53.2%, Cr 46.8%.

[0041] High Sphericity Cr-Based Alloy-TiB According to the Invention 2 The preparation method of the micro-nano powder is the above-mentioned high sphericity Cr-based alloy-TiB of the present embodiment 2 High sphericity Cr-based alloy-TiB produced by the proportioning formula of micro-nano powder 2 Micronano powder. Follow the steps below:

[0042] 1) The Cr-based alloy p...

Embodiment 2

[0047] Embodiment 2: This embodiment provides a high sphericity Cr-based alloy-TiB 2 Micro-nano powder, the high sphericity Cr-based alloy-TiB of the present embodiment and embodiment 1 2 The components and proportions of the micro-nano powders are the same, therefore, the attached figure 2 to attach Figure 4 It can also be used as a drawing of this embodiment, the difference is that step 3 of this embodiment adopts gas atomization treatment to prepare the shown micronano powder. The gas atomization treatment is to melt the second composite powder through electrode induction heating of a vacuum induction gas atomization device, and then break the droplets formed by the melted second composite powder into fine droplets by impacting with a high-pressure inert gas, and Make the small droplets fly and solidify in the atomization tower of the vacuum induction gas atomization equipment to obtain a high-sphericity Cr-based alloy-TiB 2 Micronano powder. The gas atomization treat...

Embodiment 3

[0048] Embodiment 3: This embodiment provides a high sphericity Cr-based alloy-TiB 2 Micro-nano powder, including nano-sized TiB 2 Powder and Cr-based alloy powder, by mass percentage, the nanoscale TiB 2 The percentages of the powder and the Cr-based alloy powder in the total mass of the micro-nano powder are respectively:

[0049] nano-TiB 2 Powder 25%;

[0050] Cr-based alloy powder 75%,

[0051] The Cr-based alloy powder is Ni-Cr-Mo alloy powder, and the percentages of the constituent elements in the Co-Ni-Cr-Mo alloy powder in the Cr-based alloy powder are: Co 39%, Ni 14% , Cr 20%, Mo 8%, Mn1.5%, Fe balance;

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Abstract

The invention discloses a high-sphericity Cr-based alloy-TiB 2 Micronano powder and preparation method thereof. High Sphericity Cr-Based Alloy‑TiB 2 Micro-nano powder, including nano-sized TiB 2 Powder and Cr-based alloy powder, by mass percentage, the nanoscale TiB 2 The percentages of the powder and the Cr-based alloy powder in the total mass of the micro-nano powder are: nanoscale TiB 2 Powder 20% to 80%; Cr-based alloy powder 20% to 80%. High sphericity Cr-based alloy-TiB of the present invention 2 Micro-nano powder, the particles are approximately spherical, with high fluidity, small particle size difference, and good composite effect. After sieving and grading, it can be directly used for spraying / additive manufacturing; the Cr in the Cr-based alloy powder is used to strengthen the powder after bonding. The wear resistance of the coating, through other elements in the Cr-based alloy powder, enhances the bonding strength and density between atoms in the coating, improves and improves the high-temperature corrosion resistance and erosion resistance of the nano protective coating, and solves the current problem There are problems of large particle size distribution gap, poor fluidity and poor bonding strength of powder materials.

Description

【Technical field】 [0001] The invention relates to the technical field of surface coating materials, in particular to a high-sphericity Cr-based alloy-TiB 2 Micronano powder and preparation method thereof. 【Background technique】 [0002] Powder material is one of the key and core technologies of thermal spraying surface technology and additive manufacturing (3D printing) technology, and is also a necessary raw material for many products in national economic production. Especially metal powder materials, their fluidity and surface state determine the final performance of 3D printing or additive manufacturing technology products. The manufacturing process of powder materials is different, but the crushing of materials is an indispensable process in the production of products in many industries (including metallurgy, mining, etc.). During the crushing process, the crusher has been subjected to sliding friction and support reaction force for a long time, resulting in abrasive w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C29/14C22C32/00C22C1/05C22C1/10B22F9/14B22F9/08B22F1/12
CPCC22C30/00C22C29/14C22C29/005C22C19/07C22C32/0073C22C19/058C22C1/051B22F9/14B22F9/082B22F2009/043B22F2009/042B22F2009/0824B22F2009/0844C22C1/05C22C14/00B22F9/04Y02P10/25
Inventor 吴姚莎王丽荣张宁张堃石澎陈慧挺
Owner ZHONGSHAN FLASHLIGHT POLYTECHNIC
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