欢迎登录材料期刊网

材料期刊网

高级检索

针对C/SiC低温氧化易失效的不足,研究了CVI B-C基体改性2D C/SiC在700℃湿氧中100MPa下加载至60h的氧化行为,利用SEM和TEM观察了改性材料不同服役时间的微结构特征,揭示了演变规律.研究表明,CVI B-C基体改性使C/SiC低温抗氧化能力显著提升.基体裂纹及其在应力加载下的开裂均为氧化气体提供进入通道,而后可被B-C氧化产物B2O3封填,抑制内部C消耗.CVI B-C与其氧化产物一同参与缺陷愈合.在60h内,B-C改性层愈合能力尚未完全发挥,可服役更长时间.

参考文献

[1] Ohnabe H,Masaki S,Onozuka M,et al.Potential applications of ceramic matrix composites to aero-engine components.Compos.Part A-Appl.S,1999,30(4):489-496.
[2] 张立同,成来飞.连续纤维增韧陶瓷基复合材料可持续发展战略探讨.复合材料学报,2007,2(24):1-6.
[3] 张立同,成来飞,徐永东.新型碳化硅陶瓷基复合材料的研究进展.航空制造技术,2003(1):23-32.
[4] Cheng L F,Xu Y D,Zhang L T,et al.Oxidation and defect control of CVD SiC coating on three-dimensional C/SiC composites.Carbon,2002,40(12):2229-2234.
[5] Yim X W,Cheng L F,Zhang L T,et al.Microstructure and oxidation resistence of carbon/silicon carbide composites infiltrated with chromium silicide.Mat.Sci.Eng.A-Struct.,2000,29(1/2):89-94.
[6] Lamouroox F,Bertrand S,Pailler R,et al.Oxidation-resistant carbon-fiber-reinforced ceramic-matrix composites.Compos.Sci.Technol.,1999,59(7):1073-1085.
[7] Steyer T E,Zok F W,Walls D P.Stress rupture of an enhanced Ni-calon/silicon carbide composite at intermediate temperature.J.Am.Ceram.Soc.,2005,81(8):2140-2146.
[8] Viricelle J P,Goursat P,Bahloul H D.Oxidation behaviour of a multi-layer ceramic-matrix composite(SiC)f/C/(Si-B-C)m,Compos.Sci.Technol.,2001,61(4):607-614.
[9] Werheit H,Rotter H W,Meyer F D,et al.FT-Raman spectra of isotope-enriched boron carbide.J.Solid State Chem.,2004,177(2):569-574.
[10] Liu Y S,Zhang L T,Cheng L F,et al.Preparation and oxidation resistance of 2D C/SiC composites modified by partial boron carbide serf-sealing matrix.Mat.Sci.Eng.A-Struct.,2008,495(1/2):430-436.
[11] Jacobson N S,Farmer S,Moore A,et al.High temperature oxidation of boron nitride.Part Ⅰ.Monolithic boron nitride.J.Am.Ceram.Soc.,1999,82(2):393-398.
[12] Jacobson N S,Morscher G N,Bryant D R,et al.High temperature oxidation of boron nitride.Part Ⅱ.BN layers in composites.J.Am.Ceram.Soc.,1999,82(6):1473-1482.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%