Coating composition, coating system and construction member with the coating system
A technology of coating composition and coating system, applied in the direction of coating, layered products, metal layered products, etc., can solve problems such as weakening, failure of thermal barrier coating protection, failure, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0064] The bituminous coal gasification slag (or ash) produced by the Texaco coal-water slurry gasifier was collected. The internal water content of the bituminous coal before gasification was 7.8% by weight, the ash content was 13.5% by weight, and the melting point of the ash was 1330°C. The above gasification slag is preferably decarbonized before use to remove ungasified carbon particles that may be contained in it, and then sintered at 1120 ° C for 16-20 hours in a neutral or reducing atmosphere to increase its compactness , and then grind it to the required particle size for later use. According to chemical analysis, the chemical composition of the above-mentioned bituminous coal gasification slag is as follows:
[0065] Table 1
[0066] SiO 2
[0067] In this embodiment, a single crystal nickel-based superalloy is used as the substrate; NiCrAlTaY is used as the bonding coating; 8% by weight yttrium oxide partially chemically stabilized zirconia (8YSZ) is us...
Embodiment 2
[0100] Put the nickel-based superalloy substrate sample obtained in the above-mentioned Example 1 with the coating system of the present invention into an electric furnace for testing, set the furnace temperature to 1000 ° C, and pass a certain amount of CO, H into the furnace 2 and water vapor, to keep the atmosphere in the furnace as a reducing atmosphere, and take out samples at regular intervals for testing to detect the performance changes of the coating system under high temperature and reducing atmosphere. The test results are shown in Table 7 and Table 8.
[0101] Table 7
[0102]
[0103] Table 8
[0104] Abrasion property of outer coating of vaporized slag after thermal cycle
[0105]
[0106] From Table 7 and Table 8, it can be clearly seen that after the coating system of the present invention and the outer coating of bituminous coal gasification slag are thermally cycled, almost all properties are lost or deteriorated to varying degrees except for surface r...
Embodiment 3
[0108] Long-flame cinders (or ash) produced by coal-fired boilers in thermal power plants were collected. Before combustion, the long-flame coal had an intrinsic water content of 13.4% by weight, an ash content of 17.6% by weight, and a melting point of 1260°C. The above-mentioned long-flame coal combustion slag is preferably calcined before use to remove unburned carbon particles that constitute the main loss on ignition, and then sintered at 1080 ° C for 10-18 hours in a neutral or oxidizing atmosphere to increase Its compactness, and then grind it to the required particle size for later use. After chemical analysis, the chemical composition of the above-mentioned long-flame coal combustion slag is as follows:
[0109] Table 9
[0110] SiO 2
[0111] In this embodiment, cobalt-based high-temperature-resistant alloy X-40 is used as the substrate; NiAl is used as the bonding coating; long-flame coal combustion slag (or ash) with the above-mentioned chemical compos...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More