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Multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material

A technology of thermal barrier coating and multi-component stabilization, which is applied in the field of multi-component stabilized zirconia anti-corrosion thermal barrier coating materials, can solve problems such as poor corrosion performance of molten salts, and achieve the effect of increasing glass viscosity and excellent corrosion performance of molten salts

Active Publication Date: 2014-09-17
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 thermal barrier coating material uses Y 2 o 3 As a stabilizer, anti-Na 2 SO 4 -V 2 o 5 Poor corrosion performance of molten salt

Method used

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  • Multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material
  • Multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material
  • Multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material

Examples

Experimental program
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Effect test

Embodiment 1

[0031] In this example, the multi-component stabilized zirconia anti-corrosion thermal barrier coating material is made by ball milling the main agent and the stabilizer, and the main agent is ZrO 2 , the stabilizer is Nb 2 o 5 、TiO 2 and a mixture of rare metal oxides, the Nb in the multi-component stabilized zirconia anti-corrosion thermal barrier coating material 2 o 5 、TiO 2 , rare metal oxides and ZrO 2 The molar ratio is 5:7.5:5:82.5, and the rare metal oxide is Lu 2 o 3 or In 2 o 3 , this embodiment is preferably Lu 2 o 3 ; The speed of the ball milling is 200r / min, and the time of the ball milling is 3h.

Embodiment 2

[0033] In this example, the multi-component stabilized zirconia anti-corrosion thermal barrier coating material is made by ball milling the main agent and the stabilizer, and the main agent is ZrO 2 , the stabilizer is Nb 2 o 5 、TiO 2 and a mixture of rare metal oxides, the Nb in the multi-component stabilized zirconia anti-corrosion thermal barrier coating material 2 o 5 、TiO 2 , rare metal oxides and ZrO 2 The molar ratio is 4:6:4:86, and the rare metal oxide is Lu 2 o 3 or In 2 o 3 , this embodiment is preferably In 2 o 3 ; The speed of the ball milling is 300r / min, and the time of the ball milling is 2h.

Embodiment 3

[0035] In this example, the multi-component stabilized zirconia anti-corrosion thermal barrier coating material is made by ball milling the main agent and the stabilizer, and the main agent is ZrO 2 , the stabilizer is Nb 2 o 5 、TiO 2 and a mixture of rare metal oxides, the Nb in the multi-component stabilized zirconia anti-corrosion thermal barrier coating material 2 o 5 、TiO 2 , rare metal oxides and ZrO 2 The molar ratio is 6:9:6:79, and the rare metal oxide is Lu 2 o 3 or In 2 o 3 , this embodiment is preferably Lu 2 o 3 ; The speed of the ball milling is 300r / min, and the time of the ball milling is 2.5h.

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Abstract

The invention provides a multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material which is prepared by performing mixed ball milling on a main component and stabilizer, wherein the main component is ZrO2; the stabilizer is a mixture of Nb2O5, TiO2 and rare metal oxide; the mol ratio of the Nb2O5 to the TiO2 to the rare metal oxide to the ZrO2 in the multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material is x:1.5x:x:(100-3.5x), and 3<=x<=7; and the rare metal oxide is Lu2O3 or In2O3. The multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material provided by the invention has excellent Na2SO4-V2O5 molten salt corrosion resistance and excellent calcium / magnesium / aluminum silicate molten glass corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of thermal barrier coating materials, in particular to a multi-component stabilized zirconia anti-corrosion thermal barrier 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] However, low-quality fuels often contain Na, V impurities that form Na 2 SO 4 and V 2 o 5 and attached to the leaves, Na 2 SO 4 and V 2 o 5 Molten salt will interact with stabilizer Y 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48
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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