Carbon fiber enhanced porous normal pressure sintering silicon carbide and preparation method thereof
A technology of atmospheric pressure sintering and carbon fiber, which is applied in the field of ceramic materials, can solve the problems of reduced mechanical properties of materials and low strength of carbon graphite particles, and achieve comprehensive performance improvement, improved lubrication performance, ability to withstand dry friction, and good wear reduction effect Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0037] Prepared according to the following specific process steps:
[0038] 1), according to the mass ratio of SIC micropowder: boron powder: carbon black: phenolic resin: methanol is 100:0.4:4.5:5.5:120 mixed into a slurry; use the SIC micropowder with a diameter of 0.62 microns. A ball mill mixer is used for mixing, using SIC balls with a diameter of 5-15 mm, the rotating speed is 60 rpm, and the mixing time is 40 hours.
[0039]2) Add carbon fiber with a volume content of 2% into the slurry and stir evenly. The aspect ratio of the carbon fiber is 25:1. Use an ultrasonic mixer with a rotation speed of 150 rpm and a stirring time of 3 hours.
[0040] 3) Stir the slurry in step 2) evenly with a volume content of 2% paraffin pore-forming agent (the range of paraffin particles is 5-50 microns) to obtain a mixed powder.
[0041] 4) Isostatic pressing under a pressure of 120 MPa (such as outer diameter × inner diameter × height of the finished product: 150 mm × 90 mm × 280 mm, th...
Embodiment 2
[0044] Prepared according to the following specific process steps:
[0045] 1), according to the mass ratio of SIC powder: boron powder: carbon black: phenolic resin: methanol is 100: 2.9: 1.5: 10: 120 and mixed into a slurry; using SIC powder with a diameter of 0.52 microns. A ball mill mixer is used for mixing, using SIC balls with a diameter of 5-15 mm, the rotating speed is 60 rpm, and the mixing time is 40 hours.
[0046] 2) Add carbon fiber with a volume content of 25% into the slurry and stir evenly. The length-diameter ratio of the carbon fiber is 25:1. An ultrasonic mixer is used with a rotating speed of 300 rpm and the stirring time is 6 hours.
[0047] 3) Stir the slurry in step 2) evenly with a volume content of 20% paraffin pore-forming agent (paraffin particles range from 100 to 200 microns) to obtain a mixed powder.
[0048] 4) Isostatic pressing under a pressure of 160MPa, holding the pressure for 20 seconds.
[0049] 5), sintering at normal pressure and 2080...
Embodiment 3
[0051] Prepared according to the following specific process steps:
[0052] 1), according to the mass ratio of SIC micropowder: boron powder: carbon black: phenolic resin: methanol is 100:1:3.5:6.5:120 and mixed into a slurry; adopt the SIC micropowder with a diameter of 0.62 microns. A ball mill mixer is used for mixing, using SIC balls with a diameter of 5-15 mm, the rotating speed is 60 rpm, and the mixing time is 40 hours.
[0053] 2) Add carbon fiber with a volume content of 6% into the slurry and stir evenly. The aspect ratio of the carbon fiber is 25:1. Use an ultrasonic mixer with a rotation speed of 150 rpm and a stirring time of 3 hours.
[0054] 3) Stir the slurry in step 2) evenly with a volume content of 6% paraffin pore-forming agent (paraffin particles range from 30 to 80 microns) to obtain a mixed powder.
[0055] 4) Isostatic pressing under a pressure of 120MPa, holding the pressure for 10 seconds.
[0056] 5) Sintering at normal pressure and 2030°C, furnace...
PUM
Property | Measurement | Unit |
---|---|---|
Diameter | aaaaa | aaaaa |
Bending strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap