CAJ | 학술논문

金刚石薄膜可以加强牙科用钛合金(TC4)基台止动螺钉稳定性，延长其使用寿命。通过热丝辅助化学气相沉积(HFCVD)在TC4上沉积微米晶金刚石(MCD)和纳米金刚石(NCD)薄膜，分别采用SEM、AFM和Raman光谱对金刚石薄膜的形貌和质量进行表征，采用划痕实验检测了薄膜的结合强度。结果表明：沉积得到的 NCD 和MCD薄膜连续致密，表面粗糙度小，结合良好；金刚石薄膜有效地降低了TC4表面的摩擦因数和磨损率，NCD的摩擦因数约为0.09~0.15，MCD的约为0.18~0.22，其中在人工唾液环境下表现出更低的摩擦因数；金刚石薄膜人工唾液环境中能有效地提升材料的耐腐蚀性能，TC4表面沉积所得NCD薄膜的各项性能指标均优于MCD薄膜的。
금강석박막가이가강아과용태합금(TC4)기태지동라정은정성，연장기사용수명。통과열사보조화학기상침적(HFCVD)재TC4상침적미미정금강석(MCD)화납미금강석(NCD)박막，분별채용SEM、AFM화Raman광보대금강석박막적형모화질량진행표정，채용화흔실험검측료박막적결합강도。결과표명：침적득도적 NCD 화MCD박막련속치밀，표면조조도소，결합량호；금강석박막유효지강저료TC4표면적마찰인수화마손솔，NCD적마찰인수약위0.09~0.15，MCD적약위0.18~0.22，기중재인공타액배경하표현출경저적마찰인수；금강석박막인공타액배경중능유효지제승재료적내부식성능，TC4표면침적소득NCD박막적각항성능지표균우우MCD박막적。
The diamond coatings may strengthen the stability of the titanium abutment screw in dentistry for improving its lifespan. The nanocrystalline diamond (NCD) and microcrystalline diamond (MCD) films were deposited on titanium alloy (TC4) by hot-filament-assisted chemical vapor deposition (HFCVD). The morphology and quality of the diamond films were evaluated by SEM, AFM and Raman spectroscopy, respectively. The adhesive strength between the film and substrate was characterized by scratch test. The results show that as-deposited NCD and MCD films have continuous, dense, small surface roughness and good adhesion. The friction experiments indicate that diamond coating lowers the friction coefficient and friction rate. The friction coefficient of NCD and MCD are about 0.09?0.15 and 0.18?0.22, wherein, the artificial saliva exhibit even lower. MCD coating also promotes the corrosion resistance in artificial saliva. All the results present that TC4 surface deposited with NCD film provides superior performances than MCD film.