A kind of carbon/carbon composite material ablation resistant coating and preparation process thereof
A carbon composite material, ablation-resistant technology, applied in the field of materials, can solve the problems of weak coating bonding strength, easy debonding, weak bonding between coating and substrate, etc., and achieve the effect of eliminating coating stress
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 As shown, the carbon / carbon composite materials were polished and polished with No. 1000, No. 1500 and No. 2000 sandpaper respectively, cleaned with distilled water and absolute ethanol, and dried for later use;
[0028] Weigh 60% Si powder, 30% C powder, 10% Al 2 o 3 Powder ball milling for 3 hours to make embedding powder, put half of the prepared embedding powder into the graphite crucible, put the treated carbon / carbon composite material, and then use the other half of the embedding powder to mix the carbon / carbon Cover with composite material and cover with graphite lid; put the graphite crucible into the vertical vacuum furnace of the graphite heating element, and the vacuum degree reaches 5×10 -3 After Pa, a protective gas with a flow rate of 500 ml / min (the protective gas is an inert gas) was introduced, and the temperature of the furnace was raised to 1800 °C at a heating rate of 7.5 °C / min, kept...
Embodiment 2
[0035] Example 2: The carbon / carbon composite material was polished and polished with No. 1000, No. 1500 and No. 2000 sandpaper respectively, cleaned with distilled water and absolute ethanol, and dried for later use;
[0036] Weigh 80% Si powder, 15% C powder, 5% Al 2 o 3 Powder ball milling for 3 hours to make embedding powder, put half of the prepared embedding powder into the graphite crucible, put the treated carbon / carbon composite material, and then use the other half of the embedding powder to mix the carbon / carbon Cover with composite material and cover with graphite lid; put the graphite crucible into the vertical vacuum furnace of graphite heating element, after the vacuum degree reaches 5×10-3Pa, pass in the protective gas with a flow rate of 500 ml / min, at 12 ℃ Raise the furnace temperature to 2000 °C at a heating rate of 2000 °C / min, keep it warm for 2 hours, then lower the furnace temperature to 1000 °C at a cooling rate of 7 °C / min, turn off the power and natu...
Embodiment 3
[0042] Embodiment 3: The carbon / carbon composite material is polished and polished with No. 1000, No. 1500 and No. 2000 sandpaper respectively, and then cleaned with distilled water and absolute ethanol, dried and set aside;
[0043] Weigh 70% Si powder, 15% C powder, 15% Al 2 o 3 Powder ball milling for 5 hours to make embedding powder, put half of the prepared embedding powder into the graphite crucible, put the treated carbon / carbon composite material, and then use the other half of the embedding powder to mix the carbon / carbon Cover with composite material and cover with graphite lid; put the graphite crucible into the vertical vacuum furnace of the graphite heating element, and the vacuum degree reaches 5×10 -3 After Pa, a protective gas with a flow rate of 550 ml / min was introduced, and the furnace temperature was raised to 1800 °C at a heating rate of 10 °C / min, kept for 3 hours, and then the furnace temperature was lowered to 1200 ℃, turn off the power and naturally ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size (mesh) | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More