Nano metal powder-enhanced silicon carbide/graphite composite ceramic coating layer and preparation method thereof
A technology of nano-metal powder and composite ceramics, which is applied in the field of ceramics, can solve problems such as limited application and promotion, easy cracks, service life, and high material brittleness, and achieves the effect of simple spraying process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0021] Nano metal powder reinforced silicon carbide / graphite composite ceramic coating, which includes 100 parts of silicon carbide micropowder, 3 parts of nano-tungsten powder, 3 parts of ultra-fine graphite powder, 6 parts of sodium carboxymethyl cellulose and 3-aminopropyl trioxide 2 parts of ethoxysilane.
[0022] The preparation steps are as follows: the silicon carbide micropowder, nano-tungsten powder, ultrafine graphite powder and sodium carboxymethyl cellulose are ground and mixed uniformly in a mortar in a proportion of 100:3:3:6 by weight; Deionized water and 2% dispersant were wet ball milled in a planetary ball mill at a speed of 1500 r / min for 18 hours to obtain a homogeneous suspension; after drying and pulverizing the above suspension, sieved with an 80-mesh sieve to obtain Mixing powders; melting the above-mentioned powders at a high temperature of 1500°C for 1.0h to form a molten particle flow, which is sprayed on the surface of the metal substrate at a speed...
Embodiment 2
[0026] Silicon carbide / graphite composite ceramic coating reinforced by nano metal powder, the parts by weight of each component are: 100 parts of silicon carbide micropowder, 2 parts of nano iron powder, 3 parts of ultrafine graphite powder, 8 parts of potassium water glass and octadecane 3 parts of trimethylammonium chloride.
[0027] The preparation steps are as follows: the silicon carbide micropowder, nano iron powder, ultrafine graphite powder and potassium water glass are ground and mixed uniformly in a mortar according to the ratio of 100:2:3:8 by weight; 120% deionized water is added and 3% dispersant, in a planetary ball mill, perform wet ball milling at 1800r / min for 20h to obtain a homogeneous suspension; after drying and pulverizing the above suspension, sieve with a 200-mesh sieve to obtain a mixed powder ; Melt the above powder at a high temperature of 1500°C for 1.5h to form a molten particle flow, spray it on the surface of the metal substrate at a speed of 12...
Embodiment 3
[0031] Nano metal powder reinforced silicon carbide / graphite composite ceramic coating, which includes 100 parts of silicon carbide micropowder, 3 parts of nano aluminum powder, 3 parts of ultrafine graphite powder, 6 parts of hydroxyethyl cellulose and 3 parts of polyethylene glycol.
[0032] The preparation steps are as follows: silicon carbide micro-powder, nano-aluminum powder, ultra-fine graphite powder and hydroxyethyl cellulose are ground and mixed uniformly in a mortar according to the ratio of 100:3:3:6 by weight; Ionized water and 3% dispersant were wet ball milled in a planetary ball mill at a speed of 1500 r / min for 16 hours to obtain a homogeneous suspension; after drying and pulverizing the above suspension, sieved with a 100-mesh sieve to obtain a mixed solution Powder; the above powder is melted at a high temperature of 1600°C for 2.0h to form a molten particle flow, which is sprayed on the surface of the metal substrate at a speed of 1800m / s to obtain a silicon...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More