Dissertation > Excellent graduate degree dissertation topics show

Study of Preparation and Properties for Infrared Radiant Coatings of High Emissivity

Author: CaiHongBing
Tutor: ShuiAnZe
School: South China University of Technology
Course: Materials Science
Keywords: Transition metal oxide Infrared radiant base material Infrared radiant coatings Emissivity Thermal shock resistance
CLC: TQ637
Type: Master's thesis
Year: 2010
Downloads: 200
Quote: 0
Read: Download Dissertation

Abstract


Infrared radiant base materials were prepared by calcining under reductive and oxidative atmospheres, respectively, and rapid cooling and slow cooling, according to the TG-DSC results, from low cost of transition metal oxides Fe2O3 and MnO2 as main raw materials, and small quantity of CuO and CoO as additives. Infrared radiant coatings of good thermal shock resistance were fabricated by doping certain amount of cordierite and adhesive into the base materials. The material formulation was optimized through the orthogonal experiments. The phases、microstructures、the chemical valence of the inner ions and emissivity of the the infrared radiant coatings were characterized through XRD, SEM, FT-IR, XPS and emissivity examination etc. The main results are follows:1. Fe-Mn-Cu-Co system was doped with cordierite and adhesive, the infrared radiant coatings with high thermal shock resistance and emissivity were obtained, the emissivity was all above 0.85 in the whole infrared bands, especially in the near infrared bands(2.5~ 5μm) the spectral emissivity closed to the blackbody.2. Fe2O4 based the radiant coatings were mainly composed of the spinel phase (CuFe)Fe2O4, and MnO2 based the radiant coatings were mainly composed of the anti-spinel phase CoMn2O4.3. The infrared radiant emissivity increased with increasing the MnO2 content, when the MnO2 content was about 60wt%, the emissivity reached the maximum, and then began to decrease with increasing the MnO2 content.4. Fe, Mn, Cu and Co ions showed different chemical valences in the infrared radiant base materials calcined under reductive atmosphere and rapid cooling conditions, and the reductive atmosphere and rapid cooling were benefit to improve the emissivity.5. Dopings of cordierite and adhesives did not significantly influence the emissivity, but greatly improved the thermal shock resistance of coatings.6. The adhesive doping amount significantly influnced the thermal shock resistance of coatings, but the adhesive formulation had not significant effect on the thermal shock resistance.

Related Dissertations

  1. Study on Properties of Thermal Shock and Ablation Resistance for Gr/Al-Mg Composites,TB332
  2. Water pollution characteristics and applications of microwave radiation,TP722.6
  3. Detect and Analysis of Flame Emissivity of Burning Mixture of Pulverized Coal and Gas Fuel Based on Image Processing,TK227
  4. Measurement Study on the Casting Surface Multilayers’ Emissivity,TF777
  5. Mechanical Properties and Thermal Shock Resistance of Pressless Sintered Sic-Based Ceramic Composites,TQ174.1
  6. Preparation and Properties of Thermochromic Vanadium Dioxide Thin Films,TB34
  7. Study on Properties of SiC Films Deposited by Magnetron Sputtering,O613.72
  8. Preparation and Properties Research of Reaction-bonded Grouting Silicon Nitride,TQ174.1
  9. Influence of Zircon Addition on Properties of Dense Chrome Brick,TQ175.1
  10. Synthesis of Low Thermal Expansion Alumina-magnesia-titania Materials and the Influence of Alumina-magnesia-titania Materials on the Structure and Properties of Alumina-graphite Material,TQ175.1
  11. Properties of Sr2MO4 Single-crystal from First Principles,O614.5
  12. Preparation and Study of Infrared Radiation Coating with High Emissivity at High Temperature,TQ630.7
  13. Fabrication and the Research of Properties of Doped Lanthanum Manganese Material,TQ174.1
  14. Al_2O_3 · ZrO_2 Preparation and properties of metal-ceramic,TG148
  15. Preparation of Low Emissivity Material by Electroless Nickel Plate,TQ153
  16. Study on IR Heat Reflecting Coatings,TQ637
  17. Study on the Preparation and Properties of Polyaniline Modified Electrode for IR-electrochromic Device,TN214
  18. Research on IR-Emissivity of 2A12 and TC4 Alloy in Different Microstructure and Surface States,V250.2
  19. Study on Preparation and Property of Multilayer Nano Magnetic Absorbing Materials,TB383.1
  20. The Infrared Emissivity of ZnO with Different Particle Size and Morphology,TB383.1

CLC: > Industrial Technology > Chemical Industry > Paint Industry > Special paints
© 2012 www.DissertationTopic.Net  Mobile