CAJ | 학술논문

以C2H4为碳源、Ni-Cu合金作催化剂,采用化学气相沉积法在蜂窝状堇青石表面生长纳米炭纤维(CNFs),获得压缩强度为50.0 MPa的纳米炭纤维/蜂窝堇青石复合材料.在堇青石表面蜂窝腔内生长的CNFs直径为20nm～30nm,CNFs之间相互交织形成5μm厚的纤维层,CNFs的质量分数为25.3％.金属Cu的掺杂对Ni-Cu合金的颗粒尺寸产生重要影响,进而影响CNFs的生长速率、纤维层厚度及其微结构.所合成CNFs的石墨化程度不高,在蜂窝堇青石中生长纳米炭纤维可以把其压缩强度从10MPa增加到50 MPa.
이C2H4위탄원、Ni-Cu합금작최화제,채용화학기상침적법재봉와상근청석표면생장납미탄섬유(CNFs),획득압축강도위50.0 MPa적납미탄섬유/봉와근청석복합재료.재근청석표면봉와강내생장적CNFs직경위20nm～30nm,CNFs지간상호교직형성5μm후적섬유층,CNFs적질량분수위25.3％.금속Cu적참잡대Ni-Cu합금적과립척촌산생중요영향,진이영향CNFs적생장속솔、섬유층후도급기미결구.소합성CNFs적석묵화정도불고,재봉와근청석중생장납미탄섬유가이파기압축강도종10MPa증가도50 MPa.
A carbon nanofiber ( CNF)/honeycomb cordierite composite with a compressive strength of 50 MPa was prepared by chemical vapor deposition,using C2H4 as the carbon source and Ni-Cu alloy as the catalyst.The CNFs with a diameter of 20-30 nm in the cells of the honeycomb interweave with each other to form a 5 μm- thick layer.The CNF content is 25.3 wt％.The Cu has remarkable effects on the particle size of the Ni-Cu alloy,which further affects the growth rate,loading level and nanostructures of the CNFs.The CNFs are not well graphitized and the insertion of the CNFs into the honeycomb can increase its compressive strength from 10 to 50MPa.