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Cobalt-based alloy powder and preparation method and application thereof

A cobalt-based alloy and powder technology, applied in the field of cobalt-based alloy powder and its preparation, can solve the problems of repair failure and insufficient alloy strength, and achieve the effects of reducing loss, good fluidity and small particle size

Active Publication Date: 2017-12-26
GUANGZHOU NALIAN MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a cobalt-based alloy powder for the problem that the cobalt-based alloy in the prior art still has insufficient alloy strength, which leads to repair failure.

Method used

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  • Cobalt-based alloy powder and preparation method and application thereof
  • Cobalt-based alloy powder and preparation method and application thereof
  • Cobalt-based alloy powder and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The consumption of the metal raw material of table 1 embodiment 1

[0041] raw material

cobalt

chromium

molybdenum

tungsten

Dosage (wt%)

62

28

5

5

[0042] The preparation method of the cobalt-based alloy powder of this embodiment comprises the following steps:

[0043] (1) According to the dosage in Table 1, get chromium, molybdenum, tungsten and cobalt, remove the metal oxide layer on the surface of chromium, molybdenum, tungsten and cobalt, get the chromium that removes the metal oxide layer, remove the molybdenum of the metal oxide layer, remove the metal oxide layer layer of tungsten and cobalt to remove the metal oxide layer;

[0044] (2) 35wt% of the cobalt from the removal of the metal oxide layer is added to the smelting furnace as a matrix, then the chromium from the removal of the metal oxide layer is added, after heating and melting, the molybdenum and tungsten from the removal of the metal oxide layer are adde...

Embodiment 2

[0053] The consumption of the metal raw material of table 3 embodiment 2

[0054] raw material

cobalt

chromium

molybdenum

tungsten

Dosage (wt%)

57

27

8

8

[0055] The cobalt-based alloy powder described in this embodiment is processed by 3D printing technology, comprising the steps of:

[0056] (1) According to the dosage in Table 3, get chromium, molybdenum, tungsten and cobalt, remove the metal oxide layer on the surface of chromium, molybdenum, tungsten and cobalt, get the chromium that removes the metal oxide layer, remove the molybdenum of the metal oxide layer, remove the metal oxide layer layer of tungsten and cobalt to remove the metal oxide layer;

[0057] (2) 68wt% of the cobalt from the removal of the metal oxide layer is added to the smelting furnace as a matrix, then the chromium from the removal of the metal oxide layer is added, after heating and melting, the molybdenum and tungsten from the removal of the metal ...

Embodiment 3

[0066] The consumption of the metal raw material of table 5 embodiment 3

[0067] raw material

cobalt

chromium

molybdenum

tungsten

Dosage (wt%)

58.2

23

9.4

9.4

[0068] The cobalt-based alloy powder described in this embodiment is processed by 3D printing technology, comprising the steps of:

[0069] (1) According to the dosage in Table 5, get chromium, molybdenum, tungsten and cobalt, remove the metal oxide layer on the surface of chromium, molybdenum, tungsten and cobalt, get the chromium that removes the metal oxide layer, remove the molybdenum of the metal oxide layer, remove the metal oxide layer layer of tungsten and cobalt to remove the metal oxide layer;

[0070] (2) Add 55wt% of the cobalt from the removal of the metal oxide layer to the smelting furnace as a matrix, then add the chromium from the removal of the metal oxide layer, heat and melt, then add the molybdenum and tungsten from the removal of the metal oxide l...

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Abstract

The invention relates to cobalt-based alloy powder and a preparation method and application thereof. The cobalt-based alloy powder is prepared from, by weight percentage, 22-32% of chromium, 4-10% of molybdenum, 4-10% of tungsten, 0-1% of silicon, 0-0.75% of iron, 0-0.35% of carbon, 0.05-0.2% of nitrogen and the balance cobalt. The cobalt-based alloy powder is good in fluidity, small in particle size and concentrated in particle size distribution; the mechanical performance of a cobalt-based alloy material prepared through the cobalt-based alloy powder can reach the 5 type / type 5 of the GB17168 / ISO 22674 requirement, the tensile strength reaches 1326 MPa, and the non-proportional extension strength reaches 948 MPa; and the elastic modulus reaches 206 GPa, and the fracture elongation rate reaches 13.8%.

Description

technical field [0001] The invention relates to the technical field of medical materials, in particular to a cobalt-based alloy powder and its preparation, method and application. Background technique [0002] With the wide application of metal-ceramic restorations, more and more restoration failure problems have emerged. A large number of research results have shown that metal-ceramic restorations have the highest incidence of chipping in the failure of metal-ceramic restorations, mainly because in complex oral environments, metal-ceramic restorations will be subjected to masticatory forces from all directions, and good metal-ceramic bonding Strength, high alloy strength is the basis for preventing restorations from chipping and deformation of thin-walled teeth. At present, the strength of dental alloys such as ASTM F75 and stainless steel for the preparation of dental restorations can only reach type 4 / type4 required by GB17168 / ISO 22674, resulting in deformation of denta...

Claims

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Application Information

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IPC IPC(8): C22C19/07B22F1/00B22F9/08B22F3/105B33Y10/00B33Y70/00B33Y80/00
CPCB22F1/0003C22C19/07B22F9/082B33Y10/00B33Y70/00B33Y80/00B22F10/00B22F1/142B22F10/36B22F10/64B22F10/366B22F10/28Y02P10/25
Inventor 李爱红李博王力强汤鑫
Owner GUANGZHOU NALIAN MATERIAL TECH CO LTD
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