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Laser cladding metal-ceramic coating material based on ZrO2 doping

A technology of laser cladding and ceramic coating, applied in the field of metal-ceramic coating materials and toughened metal-ceramic coating materials

Active Publication Date: 2018-10-26
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned composite ceramic cladding coating still fails to completely solve the problem of crack defects existing in the cladding process.

Method used

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  • Laser cladding metal-ceramic coating material based on ZrO2 doping
  • Laser cladding metal-ceramic coating material based on ZrO2 doping
  • Laser cladding metal-ceramic coating material based on ZrO2 doping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Cut the titanium alloy matrix sample into a cuboid with a size of 5.0cm×1.5cm×1.5cm, and grind the surface to a surface roughness of 5Ra. After cleaning and degreasing with acetone, dry it in the air, and place it in a vacuum furnace for pretreatment. Heat to 150°C.

[0032] Weigh 15g of 80-150 mesh titanium powder, 80-150 mesh ZrO 2 9g of powder and 276g of TiBCN powder of 150-200 mesh were mixed, dried in a vacuum furnace at 100°C for 1.5h, cooled naturally, and mixed in a planetary ball mill for 3h to obtain a laser cladding metal-ceramic coating material.

[0033] The titanium alloy sample is placed on the laser cladding workbench, and the metal-ceramic coating material is loaded into the powder chamber of the automatic powder feeder of the laser cladding device. Using the coaxial powder feeding method, using the German LDF-4000-100 semiconductor laser as the light source, laser cladding is carried out on the titanium alloy sample to form a toughened metal-ceramic ...

Embodiment 2

[0044] Cut the titanium alloy matrix sample into a cuboid with a size of 5.0cm×1.5cm×1.5cm, and grind the surface to a surface roughness of 7Ra. After cleaning and degreasing with acetone, dry it in the air, and place it in a vacuum furnace for pretreatment. Heat to 100°C.

[0045] Weigh 10g of 80-150 mesh titanium powder, 80-150 mesh ZrO 2 Mix 6g of powder and 284g of 150-200mesh TiBCN powder, dry in a vacuum furnace at 100°C for 1.5h, cool naturally, and mix in a planetary ball mill for 3h to obtain a laser cladding metal-ceramic coating material.

[0046] The titanium alloy sample is placed on the laser cladding workbench, and the metal-ceramic coating material is loaded into the powder chamber of the automatic powder feeder of the laser cladding device. Using the coaxial powder feeding method, using the German LDF-4000-100 semiconductor laser as the light source, laser cladding is carried out on the titanium alloy sample to form a toughened metal-ceramic cladding coating....

Embodiment 3

[0052] Cut the titanium alloy matrix sample into a cuboid with a size of 5.0cm×1.5cm×1.5cm, and grind the surface to a surface roughness of 10Ra. After cleaning and degreasing with acetone, dry it in the air, and place it in a vacuum furnace for pretreatment. Heat to 300°C.

[0053] Weigh 20g of 80-150 mesh titanium powder, 80-150 mesh ZrO 2 Mix 12g of powder and 268g of 150-200mesh TiBCN powder, dry in a vacuum furnace at 100°C for 1.5h, cool naturally, and mix in a planetary ball mill for 3h to obtain a laser cladding metal-ceramic coating material.

[0054] The titanium alloy sample is placed on the laser cladding workbench, and the metal-ceramic coating material is loaded into the powder chamber of the automatic powder feeder of the laser cladding device. Using the coaxial powder feeding method, using the German LDF-4000-100 semiconductor laser as the light source, laser cladding is carried out on the titanium alloy sample to form a toughened metal-ceramic cladding coatin...

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Abstract

The invention discloses a laser cladding metal-ceramic coating material based on ZrO2 doping. The laser cladding metal-ceramic coating material based on ZrO2 doping is prepared by mixing 5-20 wt% of Ti powder, 70-92 wt% of TiBCN ceramic powder and 3-10 wt% of ZrO2 powder. The coating material is clad on the surface of a titanium alloy substrate by a laser cladding technology. The coating materialcan absorb strain energy of residual thermal stress of laser cladding, reduce crack generation and extension caused by stress concentration, improve fracture toughness of the cladding coating, and increase strength and corrosion resistance of the cladding coating to form a toughened metal-ceramic cladding coating.

Description

technical field [0001] The invention belongs to the technical field of composite ceramic coating materials, and relates to a metal-ceramic coating material, in particular to a toughened metal-ceramic coating material used for laser cladding to strengthen the surface of titanium alloys. Background technique [0002] The forming of laser cladding coating is a rapid solidification process. The generation and expansion of residual thermal stress cracks are common defects in the rapid solidification process. There are many reasons for cracks, and the mechanism of cracks is different under different experimental conditions. Studying the cracking behavior of cladding coatings will help to control and solve the problem of coating cracking, so as to obtain high-performance metal-ceramic composite coatings. Lay the foundation for the industrialization of cladding technology. [0003] The general theory holds that thermal stress plays an important role in the entire cracking process ...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 李玉新苏科强尉利强白培康刘斌赵占勇张鹏飞
Owner ZHONGBEI UNIV
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