CAJ | 학술논문

用CVD方法在钨丝和碳纤维上沉积金刚石薄膜。约含有10000根纤维的纤维束经特殊处理后分离为单根。生长条件使碳纤维中心在CVD生长结束后仍保持固态。CVD金刚石在纤维上生长的平均激活能为93.15kJ/mol。SEM照片给出了纤维涂层在不同生长条件下的表面和中心的形貌。纤维内部的石墨碳和外部的金刚石层有很大的不同。钨丝的断裂强度和杨氏模量的测量表明，具有金刚石涂层的钨丝的断裂强度为0.567GPa，非常接近不具有金刚石涂层的钨丝的断裂强度。但具有金刚石涂层的钨丝的断裂应变为4.8％，比没有金刚石涂层的钨丝的断裂应变7％要小得多。这表明了金刚石涂层可以减少钨丝的断裂应力，提高其机械性能。
용CVD방법재오사화탄섬유상침적금강석박막。약함유10000근섬유적섬유속경특수 처리후분리위단근。생장조건사탄섬유중심재CVD생장결속후잉보지고태。CVD금강석재섬 유상생장적평균격활능위93.15kJ/mol。SEM조편급출료섬유도층재불동생장조건하적표면화 중심적형모。섬유내부적석묵탄화외부적금강석층유흔대적불동。오사적단렬강도화양씨모량 적측량표명，구유금강석도층적오사적단렬강도위0.567GPa，비상접근불구유금강석도층적오 사적단렬강도。단구유금강석도층적오사적단렬응변위4.8％，비몰유금강석도층적오사적단 렬응변7％요소득다。저표명료금강석도층가이감소오사적단렬응력，제고기궤계성능。
Diamond growth on W－wire and C－fiber substrates was studied. A treatment was used to separate fibers one by one from a bunch of more than 10000 fibers. The selected growth condition was to keep the carbon fiber core solid after CVD growth. Activation energy of CVD coated fibers is 93.15 kJ/mol in average. SEM pictures show surface and core morphology of the coatings under different treatment conditions. There are two different contrasts related to interior graphite carbon and exterior diamond layer. Wire fracture strength and Young's modulus measurement indicates that the fracture strength of W wire with diamond coating is 0.567 GPa, very close to its value without coating. However, the fracture strain of the wire with diamond coating is 4.8％ , which is much less than that of W wire fracture strain of 7％ . It means that diamond coated wire may reduce wire fracture strain and improve its mechanical property.