CAJ | 학술논문

目的：在碳纤维表面进行化学镀镍,对碳纤维化学镀镍的表面改性进行研究。方法通过 X 射线衍射仪、扫描电子显微镜等测试手段研究 pH 值、热处理温度及超声波对镀层的形貌、组织结构及镀速的影响。结果 pH 值在8.0~10.0时,随 pH 值增大,沉积速率逐渐变大,镀层表面均匀致密,与基体结合良好,厚度约为0.5μm；pH 值在10.0~11.0时,碳纤维发生团聚。热处理温度为400℃时,保温10 min,镀层重结晶析出 Ni3 P 相；随温度升高,镀层发生开裂,且开裂部位间隔变小。结论 pH 值对镀层沉积影响较大,超过极限值会导致碳纤维团聚。热处理温度过高会导致镀层重结晶,且发生开裂。
목적：재탄섬유표면진행화학도얼,대탄섬유화학도얼적표면개성진행연구。방법통과 X 사선연사의、소묘전자현미경등측시수단연구 pH 치、열처리온도급초성파대도층적형모、조직결구급도속적영향。결과 pH 치재8.0~10.0시,수 pH 치증대,침적속솔축점변대,도층표면균균치밀,여기체결합량호,후도약위0.5μm；pH 치재10.0~11.0시,탄섬유발생단취。열처리온도위400℃시,보온10 min,도층중결정석출 Ni3 P 상；수온도승고,도층발생개렬,차개렬부위간격변소。결론 pH 치대도층침적영향교대,초과겁한치회도치탄섬유단취。열처리온도과고회도치도층중결정,차발생개렬。
Objective To perform nickel coating on the surface of carbon fiber using chemical deposition under ultrasonic condi-tion so as to study nickel plating for surface modification of carbon fiber. Methods The organizational structure,microstructure and plating rate were changed by the pH value of plating bath and temperature of heat treatment as well as ultrasound, which were in-vestigated through XRD and SEM analysis. Results When the pH value was between 8. 0 and 10. 0, the deposition rate was in-creased with the pH value, the coating was uniform, dense and well bonded with the matrix and the coating thickness was about 0. 5 μm. The carbon fiber had a reunion phenomenon, when the pH value was between 10. 0 ~ 11. 0. The plating layer was recrys-tallized to generate Ni3 P phase after being kept for 10 min at the heat treatment temperature of 400 ℃ . With increasing of the tem-perature, the plating layer crazed and the gap between the crazed parts decreased. Conclusion The pH value had great influence on deposition and would lead to carbon fiber reunion when exceeding the limit value. Too high temperature for heat treatment would lead to recrystallization and crack of the plating layer.