CAJ | 학술논문

对比研究国外石墨IG-11、NBG-18和国产石墨HSM-SC的各向同性度、气孔直径、气孔形貌和微晶状态,探讨其结构差异.研究发现,国外石墨在各向同性度的控制上优于国产石墨;采用细颗粒配料方式下焦颗粒平均直径对石墨内部气孔直径的大小影响较大;在相同工艺条件下,采用细颗粒配料方式的石墨力学性能更好;细颗粒各向同性石墨质量与改进混捏均匀性有重要联系;利用X射线衍射谱中石墨(002)衍射峰的半高宽可以定性评价石墨化程度.探讨了国外各向同性石墨制备工艺中值得借鉴的地方.
대비연구국외석묵IG-11、NBG-18화국산석묵HSM-SC적각향동성도、기공직경、기공형모화미정상태,탐토기결구차이.연구발현,국외석묵재각향동성도적공제상우우국산석묵;채용세과립배료방식하초과립평균직경대석묵내부기공직경적대소영향교대;재상동공예조건하,채용세과립배료방식적석묵역학성능경호;세과립각향동성석묵질량여개진혼날균균성유중요련계;이용X사선연사보중석묵(002)연사봉적반고관가이정성평개석묵화정도.탐토료국외각향동성석묵제비공예중치득차감적지방.
The isotropy ratio,porosity,condition of pore and apparent crystallite size for some selected isotropic graphite grades including IG-11,NBG-18,HSM-SC were discussed. The method of producing isotropic graphite, according to difference of microstructure of graphites above, was also discussed. The results show that IG-11 and NBG-18 are better than HSM-SC in isotropy ratio control.It is found that the pore diameter is essentially related to grain size in the processing of a fine grain graphite.Graphite made from the small grain size shows better properties.The mixing techniques of small grain are related to the quality of a fine grain graphite.A comparison of degree of graphitization was established by X-ray diffraction method using half-width of graphite (002) peak.