Multi-component stable thermal-corrosion-resistant zirconia coat material

A multivariate stable, coating material technology, applied in the field of thermal corrosion resistant coating materials, can solve problems such as poor molten salt corrosion performance, and achieve the effect of improving molten salt corrosion life and excellent molten salt corrosion performance.

Active Publication Date: 2014-08-13
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating material uses Y 2 o 3 As a stabilizer, its anti-Na 2 SO 4 -V 2 o 5 Poor corrosion performance of molten salt

Method used

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  • Multi-component stable thermal-corrosion-resistant zirconia coat material
  • Multi-component stable thermal-corrosion-resistant zirconia coat material
  • Multi-component stable thermal-corrosion-resistant zirconia coat material

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Experimental program
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Effect test

Embodiment 1

[0030] In this embodiment, the multi-component stabilized zirconia anti-hot corrosion coating material is formed by mixing and ball milling the main agent and the stabilizer, and the main agent is ZrO 2 , the stabilizer is Ta 2 o 5 、In 2 o 3 、Al 2 o 3 and TiO 2 The mixture of the multi-component stabilized zirconia anti-hot corrosion coating material Ta 2 o 5 、In 2 o 3 、Al 2 o 3 、TiO 2 and ZrO 2 The molar ratio is 3:3:3:3:88; the speed of the ball milling is 200r / min, and the time of the ball milling is 3h.

Embodiment 2

[0032] In this embodiment, the multi-component stabilized zirconia anti-hot corrosion coating material is formed by mixing and ball milling the main agent and the stabilizer, and the main agent is ZrO 2 , the stabilizer is Ta 2 o 5 、In 2 o 3 、Al 2 o 3 and TiO 2 The mixture of the multi-component stabilized zirconia anti-hot corrosion coating material Ta 2 o 5 、In 2 o 3 、Al 2 o 3 、TiO 2 and ZrO 2 The molar ratio is 3.5:3.5:3.5:3.5:86; the speed of the ball milling is 300r / min, and the time of the ball milling is 2h.

Embodiment 3

[0034] In this embodiment, the multi-component stabilized zirconia anti-hot corrosion coating material is formed by mixing and ball milling the main agent and the stabilizer, and the main agent is ZrO 2 , the stabilizer is Ta 2 o 5 、In 2 o 3 、Al 2 o 3 and TiO 2 The mixture of the multi-component stabilized zirconia anti-hot corrosion coating material Ta 2 o 5 、In 2 o 3 、Al 2 o 3 、TiO 2 and ZrO 2 The molar ratio of the ball mill is 4:4:4:4:84; the speed of the ball mill is 250r / min, and the time of the ball mill is 2.5h.

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Abstract

The invention provides a multi-component stable thermal-corrosion-resistant zirconia coat material. The coat material is obtained through mixing a main agent with a stabilizer and carrying out ball milling, the main agent is ZrO2, the stabilizer is a mixture of Ta2O5, In2O3, Al2O3 and TiO2, the molar ratio of Ta2O5: In2O3: Al2O3: TiO2: ZrO2 in the multi-component stable thermal-corrosion-resistant zirconia coat material is x:x:x:x:(100-4x), and x is not greater than 4 and not lower than 2. Tetragonal phase ZrO2 is finally obtained through adopting Ta2O5, In2O3, Al2O3 and TiO2 as the stabilizer to stabilize ZrO2 in the invention. The multi-component stable thermal-corrosion-resistant zirconia coat material has an excellent Na2SO4-V2O5 molten salt corrosion resistance, and an excellent calcium magnesium aluminosilicate molten glass corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of heat-corrosion-resistant coating materials, and in particular relates to a multi-component stabilized zirconia heat-resistant coating material. Background technique [0002] YSZ thermal barrier coating (i.e. using Y 2 o 3 Stable ZrO 2 ) has a high melting point, low thermal conductivity (the thermal conductivity is 2W / m·k~3W / m·k), high fracture toughness (the fracture toughness is 6MPa·m -1 / 2 ~9MPa·m -1 / 2 ) and high thermal expansion coefficient (its thermal expansion coefficient is 9×10 -6 K -1 ~11×10 -6 K -1 , matching with high-temperature alloys) and other excellent comprehensive properties, it is currently widely used in thermal barrier coatings for turbine blades of aero-engines and gas turbines. [0003] The thermal corrosion of thermal barrier coatings during service includes: (1) Na 2 SO 4 -V 2 o 5 Molten salt corrosion; (2) Calcium magnesium aluminum silicate molten glass corrosion. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/63
Inventor 华云峰王彦峰王宝云李争显杜继红
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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