Controllable preparation of SiC coating protecting carbon fiber from oxidation damage during sintering process and SiC coated carbon fiber reinforced hydroxyapatite composites
Controllable preparation of SiC coating protecting carbon fiber from oxidation damage during sintering process and SiC coated carbon fiber reinforced hydroxyapatite composites
复制标题
可控制备保护碳纤维烧结过程氧化损伤的SiC涂层及SiC涂层碳纤维增强羟基磷灰石复合材料
DOI：
10.1016/j.apsusc.2018.04.164
复制
发表时间：
2018-08
影响因子：
6.7
通讯作者：
Jiang Guozhan
中科院分区：
文献类型：
--
作者：
Zhao Xueni;Wang Xudong;Xin Hua;Zhang Li;Yang Jianjun;Jiang Guozhan
纯羟基磷灰石(HA)作为一种理想的人工骨材料，其较差的力学性能尤其是脆性限制了其临床应用。为了实现碳纤维增强羟基磷灰石生物陶瓷的无压烧结，采用低压化学气相沉积(LPCVD)方法在碳纤维表面制备了碳化硅涂层。碳化硅涂层的结构、形貌和厚度是可控的。采用无压烧结法制备了碳化硅涂层碳纤维(SiCf)增强羟基磷灰石(HA)复合材料(SiCcf/HA)，烧结温度为第1373 K，烧结时间为20 min。当碳化硅纤维的质量分数为0.5wt%时，复合材料的抗弯强度达到最大值，为28.4 Mpa。它几乎是在相同条件下烧成的纯HA的三倍。相应的断裂韧性高达1.2 8 Mpa·m1/2，分别比HA和CF/HA复合材料提高26.6%和19.5%。抗弯强度和断裂韧性的提高主要归因于强韧化机制(裂纹桥联和碳化硅碳纤维的拔出)。在实际应用中，碳化硅涂层起到了氧扩散屏障的作用，防止了碳纤维在常压烧结过程中由于羟基磷灰石的脱羟基而造成的氧化损伤。此外，碳化硅涂层能够在氧化性气氛中形成过渡性的二氧化硅层，填补涂层的裂纹，增强界面相容性，降低界面应力。本研究为碳化硅-碳纤维/羟基磷灰石复合材料在临床上作为种植体承载材料的可行性提供了新的见解。
As a kind of ideal artificial bone materials, poor mechanical properties especially brittleness of pure hydroxyapatite (HA) have limited its clinical application. In order to achieve pressureless sintering of carbon fiber (CF) reinforced HA bioceramics, SiC coating was successfully prepared on CF surface by low pressure chemical vapor deposition (LPCVD). The structure, morphology, and thickness of the SiC coating are controllable. The SiC coated CF (SiC-CF) reinforced HA composites (SiC-CF/HA) were prepared via pressureless sintering at 1373 K for 20 min. The bending strength of the SiC-CF/HA composite reaches its maximum achievable value of 28.4 MPa, when 0.5 wt% of SiC-CF was added. It is almost three times that of pure HA sintered under an identical condition. The corresponding fracture toughness is as high as 1.28 MPa·m1/2, which are 26.6% and 19.5% increase over those of HA and CF/HA composites, respectively. The enhancements of the bending strength and fracture toughness are mainly due to enhancing and toughening mechanism (crack-bridging and pull-out of SiC-CF). In practice, SiC coating acts as an oxygen diffusion barrier to prevent the oxidative damage of CF caused by dehydroxylation of HA during pressureless sintering. Furthermore, the SiC coating has the ability to form a transitional SiO2layer in an oxidizing atmosphere which fills the cracks of the coating, enhances the interfacial compatibility, and lessens the interfacial stress. The study provides additional insights into the feasibility of SiC-CF/HA composites as load-bearing implant materials in clinical applications.
登录
查看更多内容
DOI：
10.1016/j.compositesa.2006.01.006
发表时间：
2007
影响因子：
8.7
作者：
Satoshi Kobayashi;W. Kawai
通讯作者：
Satoshi Kobayashi;W. Kawai
DOI：
10.1007/s10856-007-3107-5
发表时间：
2008-01-01
影响因子：
3.7
作者：
Meng, Y. H.;Tang, Chak Yin;Chen, Da Zhu
通讯作者：
Chen, Da Zhu
影响因子：
5.2
作者：
Yanhui Chu;Q. Fu;Hejun Li;Heng Wu;Kezhi Li;Jun-Xi Tao;Q. Lei
通讯作者：
Yanhui Chu;Q. Fu;Hejun Li;Heng Wu;Kezhi Li;Jun-Xi Tao;Q. Lei
DOI：
10.1016/j.msec.2016.02.058
发表时间：
2016-06
期刊：
Materials science & engineering. C, Materials for biological applications
影响因子：
--
作者：
Xudong Wang;Xueni Zhao;Wanying Wang;Jing Zhang;Li Zhang;Fuzhen He;Jianjun Yang
通讯作者：
Xudong Wang;Xueni Zhao;Wanying Wang;Jing Zhang;Li Zhang;Fuzhen He;Jianjun Yang
影响因子：
5.7
作者：
Yi Liu;M. Eriksson;Z. Jin;M. Nygren;Z. Shen
通讯作者：
Yi Liu;M. Eriksson;Z. Jin;M. Nygren;Z. Shen