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Carbon/carbon composite material ZrO2 particle and SiC whisker synergistically toughened mullite composite coating preparation method

A technology of carbon composite materials and composite coatings, which is applied in the field of preparing carbon/carbon composite composite outer coatings. It can solve the problems that the preparation cannot be completed at one time, the surface of the outer coating is easy to crack, and the thickness of the coating is insufficient, and the heating speed can be achieved. The effect of fast, smooth surface and short reaction cycle

Active Publication Date: 2014-11-05
盐城市聚龙湖商务集聚区发展有限公司
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

The use of supercritical fluid technology to prepare C / C composite coatings requires high temperature and high pressure for the preparation process, which requires high equipment requirements, and the formed outer coating must be heat treated in an inert atmosphere. The preparation cycle Relatively long [Bemeburg P L, Krukonis V J.Processing of carbon / carbon composites using supercritical fluid technology[P].United States Patent US5035921,1991], the coating prepared by the in-situ forming method needs to be treated at a high temperature of 1500°C, and Can not be prepared at one time [Huang Jian-Feng, Li He-Jun, Zeng Xie-Rong, Li Ke-Zhi.Surf.coat.Technol.2006,200,5379.], the outer coating prepared by sol-gel method The surface is prone to cracking and the coating thickness is insufficient [Huang Jian-Feng, Zeng Xie-Rong, Li He-Jun, Xiong Xin-Bo, Sun Guo-ling. Surf.coat.Technol. Although some alloy coatings have been prepared by ultrasonic spraying and ultrasonic spraying, there are still many imperfections in the process, and the high-temperature oxidation resistance of the prepared coatings needs to be further improved [Terentieva V S, Bogachkova O P, Goriatcheva E V. Method for protecting products made of a refractory material against oxidation, and resulting products[p].US5677060,1997.]
ZrO was prepared by electromagnetic induction heating-double-pulse hydrothermoelectrophoretic deposition. 2 The method of synergistically toughening mullite composite outer coating with particles and SiC whiskers has not been reported yet

Method used

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  • Carbon/carbon composite material ZrO2 particle and SiC whisker synergistically toughened mullite composite coating preparation method
  • Carbon/carbon composite material ZrO2 particle and SiC whisker synergistically toughened mullite composite coating preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]1) Choose mullite powder (commercially available mullite powder has been dry-milled for about 45 hours, and the average particle size is controlled at about 150nm), ZrO 2 Powder (commercially available ZrO 2 The powder has been dry ball milled for about 45 hours, and the average particle size is controlled at about 2 μm), commercially available SiC whiskers (aspect ratio of 50-100), elemental iodine (purity ≥ 99.7%), and butanol (purity ≥ 99.8%) ) is the raw material;

[0026] 2) First, mullite powder, SiC whiskers and ZrO 2 The mixed powder composed of powder is dispersed in 80mL butanol, and it is prepared into a suspension A1 with a mixed powder concentration of 16g / L. The mass fraction of mullite powder in the mixed powder is 50%, and the mass fraction of SiC whiskers Fraction 40%, ZrO 2 The mass fraction of the powder is 10%, the suspension A1 is ultrasonically oscillated for 10 minutes, the ultrasonic power is 1000W, and then placed on a magnetic stirrer to stir...

Embodiment 2

[0031] 1) Choose mullite powder (commercially available mullite powder has been dry-milled for about 45 hours, and the average particle size is controlled at about 150nm), ZrO 2 Powder (commercially available ZrO 2 The powder has been dry ball milled for about 45 hours, and the average particle size is controlled at about 2 μm), commercially available SiC whiskers (aspect ratio of 50-100), elemental iodine (purity ≥ 99.7%), and butanol (purity ≥ 99.8%) ) is the raw material;

[0032] 2) First, mullite powder, SiC whiskers and ZrO 2 The mixed powder composed of powder is dispersed in 90mL butanol, and it is prepared into a suspension A1 with a mixed powder concentration of 10g / L. The mass fraction of mullite powder in the mixed powder is 55%, and the mass fraction of SiC whiskers Fraction 35%, ZrO 2 The mass fraction of the powder is 10%, the suspension A1 is ultrasonically oscillated for 15 minutes, the ultrasonic power is 800W, and then placed on a magnetic stirrer to stir...

Embodiment 3

[0037] 1) Choose mullite powder (commercially available mullite powder has been dry-milled for about 45 hours, and the average particle size is controlled at about 150nm), ZrO 2 Powder (commercially available ZrO 2 The powder has been dry ball milled for about 45 hours, and the average particle size is controlled at about 2 μm), commercially available SiC whiskers (aspect ratio of 50-100), elemental iodine (purity ≥ 99.7%), and butanol (purity ≥ 99.8%) ) is the raw material;

[0038] 2) First, mullite powder, SiC whiskers and ZrO 2 The mixed powder composed of powder is dispersed in 100mL butanol, and it is prepared into a suspension A1 with a mixed powder concentration of 15g / L. The mass fraction of mullite powder in the mixed powder is 60%, and the mass fraction of SiC whiskers Fraction 20%, ZrO 2 The mass fraction of the powder is 20%, the suspension A1 is ultrasonically oscillated for 20 minutes, the ultrasonic power is 500W, and then placed on a magnetic stirrer to sti...

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Abstract

The invention provides a carbon / carbon composite material ZrO2 particle and SiC whisker synergistically toughened mullite composite coating preparation method. According to the method, mullite powder, SiC whiskers, and ZrO2 powder are dispersed in butanol; ultrasonic oscillation is carried out, and stirring is carried out while heating, such that a suspension liquid A is obtained; elemental iodine is added to the suspension liquid A; stirring is carried out while heating, such that a suspension liquid B is obtained; the suspension liquid B is added into a hydrothermal kettle with a graphite electrode as an anode and a conductive substrate as a cathode; electromagnetic induction heating double-pulse hydrothermal electrophoretic deposition is carried out; and a sample is fetched and dried. The carbon / carbon composite material ZrO2 particle and SiC whisker synergistically toughened mullite composite outer coating providd by the invention has no crack on the surface. The coating has high bonding strength on a substrate. The preparation process is simple; operation is convenient; reaction period is short, raw materials are easy to obtain; and preparation cost is relatively low. The method has good development prospect.

Description

technical field [0001] The invention relates to a method for preparing a carbon / carbon composite material composite outer coating, in particular to an electromagnetic induction heating-double-pulse hydrothermoelectrophoresis deposition preparation with uniform surface without micro-cracks, and uniform thickness without penetrating holes and cracks Carbon / carbon composite ZrO 2 A Method for Synergistic Toughening of Mullite Composite Topcoats by Particles and SiC Whiskers. Background technique [0002] C / C composite material is a carbon-based composite material with carbon fiber as the reinforcing phase. Since it is only composed of a single carbon element, it not only has the advantages of excellent ablation resistance, low density, and low thermal expansion coefficient of carbon and graphite materials, but also It also has excellent mechanical properties at high temperatures, such as high strength, high modulus, good fracture toughness and wear resistance. In particular, ...

Claims

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Application Information

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IPC IPC(8): C04B41/86
Inventor 黄剑锋周磊张永亮李翠艳欧阳海波郝巍
Owner 盐城市聚龙湖商务集聚区发展有限公司
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