Tetragonal phase thermal barrier coating material and preparation method thereof
A technology of thermal barrier coating and tetragonal phase, which is applied in the field of tetragonal phase thermal barrier coating material and its preparation, and can solve the problems of decreased phase stability, decreased fracture toughness, etc.
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Embodiment 1
[0051] (1) TiO 2 、 Ta 2 o 5 , Y 2 o 3 、Gd 2 o 3 , Yb 2 o 3 and ZrO 2 The powder raw materials were put into different corundum crucibles and placed in different box-type resistance furnaces for calcination; among them, Ta 2 o 5 , Y 2 o 3 、Gd 2 o 3 , Yb 2 o 3 and ZrO 2 After calcination at 1000℃ for 2h, TiO 2 After calcination at 800°C for 1 hour; after calcination, cool down to room temperature with the furnace to remove the moisture adsorbed in each powder raw material.
[0052] (2) Each powder raw material after calcination is according to TiO 2 : Ta 2 o 5 :Y 2 o 3 :Gd 2 o 3 :Yb2 o 3 :ZrO 2 =4:10:4:3:3:76 The ratio of the amount of substance is mixed, then packed into the polyurethane ball mill tank, to obtain the mixture, add dehydrated alcohol and zirconia balls; zirconia balls, the mixture and no The mass ratio of water to ethanol is 2:1:2; then the polyurethane ball mill tank is placed in a planetary ball mill for mechanical ball milling and mi...
Embodiment 2
[0059] (1) TiO 2 、 Ta 2 o 5 , Y 2 o 3 、Gd 2 o 3 , Yb 2 o 3 and ZrO 2 The powder raw materials were put into different corundum crucibles and placed in different box-type resistance furnaces for calcination; among them, Ta 2 o 5 , Y 2 o 3 、Gd 2 o 3 , Yb 2 o 3 and ZrO 2 After calcination at 1000℃ for 2h, TiO 2 After calcination at 800°C for 1 hour; after calcination, cool down to room temperature with the furnace to remove the moisture adsorbed in each powder raw material.
[0060] (2) Each powder raw material after calcination is according to TiO 2 : Ta 2 o 5 :Y 2 o 3 :Gd 2 o 3 :Yb 2 o 3 :ZrO 2 =6:10:4:3:3:74 is mixed in the ratio of the amount of substance, then packed into the polyurethane ball mill tank, to obtain the mixture, add dehydrated alcohol and zirconia balls; zirconia balls, the mixture and no The mass ratio of water to ethanol is 3:1:2; then the polyurethane ball mill tank is placed in a planetary ball mill for mechanical ball milling a...
Embodiment 3
[0067] The thermal barrier coating materials prepared in Example 1, Example 2 and Comparative Example 1 were tested for anti-sintering performance, and the test results are shown in image 3 , it can be seen that after heat treatment at 1400°C, under the same holding time, the porosity of the thermal barrier coating materials prepared in Examples 1-2 is significantly higher than that of the thermal barrier coating materials prepared in Comparative Example 1. The porosity of the coating material shows that the high temperature sintering resistance of the thermal barrier coating material prepared in Examples 1-2 is significantly better than that of the equimolar yttrium oxide and tantalum oxide co-doped tetragonal zirconia prepared in Comparative Example 1. Anti-sintering properties.
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