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Effect of High-temperature Annealing on Mechanical Performance and Microstructures of Different Oxygen SiC Fibers

  • Weidan Liu (刘卫丹)
  • Yan Zhao
  • Anqi Dong
Advanced Materials

Abstract

In order to explore the effect of high-temperature annealing on the mechanical performances and microstructures of different oxygen SiC fibers, two types of silicon carbide (SiC)-based fibers, specified as XD-SiC fibers (low oxygen) and Nicalon-201 fibers (high oxygen), were annealed in Ar for 1 h at 800 °C, 1 000 and 1 200 °C, respectively. Mechanical properties of these fibers were characterized via a monofilament tensile method, with observation of the damaged monofilament by SEM. Also, the effects of annealing on the microstructure and chemical compositions of the fibers were studied. The experimental results indicated that the tensile strength decreased with the increase of annealing temperatures, after annealing-treatment at 1200°C, D-SiC fibers remained 84% of its original strength, while Nicalon-201 fibers remained only 58% of its original strength. Crystallization and chemical composition of the fibers are the dominating factors for their mechanical performance at high temperatures. The microstructure changes of XD-SiC fibers are mainly composed of the growth of β-SiC, for Nicalon-201 fibers, evaporation of gases is the main change for microstructure.

Key words

SiC fibers annealing-treatment mechanical performance microstructures 

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References

  1. [1]
    Yoshida K, Imai M, Yano T. Improvement of the Mechanical Properties of Hot-Pressed Silicon-Carbide-Fiber-Reinforced Silicon Carbide Composites by Polycarbosilane Impregnation[J]. Composites Science and technology, 2001, 61(9): 1323–1329CrossRefGoogle Scholar
  2. [2]
    Yamada R, Taguchi T, Igawa N. Mechanical and Thermal Properties of 2D and 3D SiC/SiC Composites[J]. Journal of Nuclear Materials, 2000, 283: 574–578CrossRefGoogle Scholar
  3. [3]
    Sayano A, Sutoh C, Suyama S, et al. Development of a Reaction-Sintered Silicon Carbide Matrix Composite[J]. Journal of Nuclear Materials, 1999, 271: 467–471CrossRefGoogle Scholar
  4. [4]
    Yajima S, Hayashi J, Omori M. Continuous Silicon Carbide Fiber of High Tensile Strength[J]. Chemistry Letters, 1975, 4(9): 931–934CrossRefGoogle Scholar
  5. [5]
    Takeda M, Sakamoto J, Imai Y, et al. Thermal Stability of the Low-Oxygen-Content Silicon Carbide Fiber, Hi-Nicalon TM[J]. Composites Science and Technology, 1999, 59(6): 813–819CrossRefGoogle Scholar
  6. [6]
    Sha JJ, Hinoki T, Kohyama A. Thermal and Mechanical Stabilities of Hi-Nicalon SiC Fiber Under Annealing and Creep in Various Oxygen Partial Pressures[J]. Corrosion Science, 2008, 50(11): 3132–3138CrossRefGoogle Scholar
  7. [7]
    Liu H, Cheng H, Wang J, et al. Microstructural Investigations of the Pyrocarbon Interphase in SiC Fiber-Reinforced SiC Matrix Composites[J]. Materials Letters, 2009, 63(23): 2029–2031CrossRefGoogle Scholar
  8. [8]
    Liu H, Cheng H, Wang J, et al. Effects of the Fiber Surface Characteristics on the Interfacial Microstructure and Mechanical Properties of the KD SiC Fiber Reinforced SiC Matrix Composites[J]. Materials Science and Engineering: A, 2009, 525(1): 121–127CrossRefGoogle Scholar
  9. [9]
    Yu H, Zhou X, Wang H, et al. 2D SiC/SiC Composite for Flow Channel Insert (FCI) Application[J]. Fusion Engineering and Design, 2010, 85(7): 1693–1696CrossRefGoogle Scholar
  10. [10]
    Wang H, Zhou X, Yu J, et al. Fabrication of SiC f/SiC Composites by Chemical Vapor Infiltration and Vapor Silicon Infiltration[J]. Materials Letters, 2010, 64(15): 1691–1693CrossRefGoogle Scholar
  11. [11]
    He GW, Shibayama T, Takahashi H. Microstructural Evolution of Hi-NicalonTM SiC Fibers Annealed and Crept in Various Oxygen Partial Pressure Atmospheres[J]. Journal of Materials Science, 2000, 35(5): 1153–1164CrossRefGoogle Scholar
  12. [12]
    Shimoo T, Okamura K, Hayatsu T. Effect of Atmosphere on Pyrolysis of Nicalon[J]. Journal of Materials Science, 1996, 31(16): 4407–4413CrossRefGoogle Scholar
  13. [13]
    Youngblood GE, Lewinsohn C, Jones RH, et al. Tensile Strength and Fracture Surface Characterization of Hi-Nicalon™ SiC Fibers[J]. Journal of Nuclear Materials, 2001, 289(1): 1–9CrossRefGoogle Scholar
  14. [14]
    Youngblood GE, Jones RH, Kohyama A, et al. Radiation Response of SiC-Based Fibers[J]. Journal of Nuclear Materials, 1998, 258: 1551–1556CrossRefGoogle Scholar
  15. [15]
    Henager CH, Youngblood GE, Senor DJ, et al. Dimensional Stability and Tensile Strength of Irradiated Nicalon-CG and Hi-Nicalon Fibers[J]. Journal of Nuclear Materials, 1998, 253(1): 60–66CrossRefGoogle Scholar
  16. [16]
    Green DJ. An Introduction to the Mechanical Properties of Ceramics[M]. Cambridge University Press, 1998CrossRefGoogle Scholar
  17. [17]
    Wu D, Li Y, Zhang J, et al. Effects of the Number of Testing Specimens and the Estimation Methods on the Weibull Parameters of Solid Catalysts[J]. Chemical Engineering Science, 2001, 56(24): 7035–7044CrossRefGoogle Scholar
  18. [18]
    Shimoo T, Okamura K, Takeuchi H. Effect of Reduced Pressure on Oxidation and Thermal Stability of Polycarbosilane-Derived SiC Fibers[J]. Journal of Materials Science, 2003, 38(24): 4973–4979CrossRefGoogle Scholar
  19. [19]
    Bunsell AR, Piant A. A Review of the Development of Three Generations of Small Diameter Silicon Carbide Fibres[J]. Journal of Materials Science, 2006, 41(3): 823–839CrossRefGoogle Scholar
  20. [20]
    Shao C, Zhu Y, Shang X, et al. High Temperature Resistant SiC Fibres Derived from Novel Boron Containing Polycarbosilane[J]. Materials Research Innovations, 2014, 18(Sup4): S4–892–S4–895Google Scholar
  21. [21]
    Yao RQ, Wang YY, Feng ZD. The Effect of High-temperature Annealing on Tensile Strength and Its Mechanism of Hi-Nicalon SiC Fibres under Inert Atmosphere[J]. Fatigue & Fracture of Engineering Materials & Structures, 2008, 31(9): 777–787Google Scholar
  22. [22]
    Shimoo T, Okamura K, Tsukada I, et al. Thermal Stability of Low-oxygen SiC Fibers Fired under Different Conditions[J]. Journal of Materials Science, 1999, 34(22): 5623–5631CrossRefGoogle Scholar

Copyright information

© Wuhan University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringBeihang UniversityBeijingChina

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