CAJ | 학술논문

通过物理气相沉积方法，在PCB微钻上沉积硬质HAC涂层，采用扫描电子显微镜、纳米压痕/划痕仪、摩擦磨损试验机等仪器对涂层的硬度、结合强度等力学性能进行了研究，并进行了硬质HAC涂层微钻与未涂层微钻对比加工测试。实验结果表明，硬质HAC涂层的硬度高，与硬质合金基材结合良好，涂层的摩擦系数低；硬质HAC涂层钻头加工典型无卤素板材时，使用寿命是未涂层钻头的2.8倍。
통과물리기상침적방법，재PCB미찬상침적경질HAC도층，채용소묘전자현미경、납미압흔/화흔의、마찰마손시험궤등의기대도층적경도、결합강도등역학성능진행료연구，병진행료경질HAC도층미찬여미도층미찬대비가공측시。실험결과표명，경질HAC도층적경도고，여경질합금기재결합량호，도층적마찰계수저；경질HAC도층찬두가공전형무서소판재시，사용수명시미도층찬두적2.8배。
Hard HAC coating is deposited on cemented carbide micro-drills for printed circuit boards by physical vapor deposition, and Scanning Electron Microscope and Nano indenter and Nano scratch tester and tribometer are employed to characterize the mechanical properties such as hardness and coating-substrate adhesion of hard HAC coating, and a comparative drilling test between HAC coated drills and uncoated drills has been done. It is indicated that the hardness and elastic modulus of HAC coating are separately,and the adhesion with substrate and meanwhile the coefficient of friction of HAC coating is very good,. It is also found that the service life of HAC coated drills was 2.8 times than that of uncoated ones when drilling typical halogen free printed circuit boards in this paper.