CAJ | 학술논문

目前，金刚石被认为是制备加工钛合金涂层刀具的理想材料，但是关于金刚石涂层与钛合金间磨损机制的研究甚少。为此，本实验利用热丝化学气相沉积(HFCVD)在硬质合金(WC-Co)基体上制备聚晶金刚石(PCD)薄膜并研究其与 Ti-2Al-1.5Mn(TC1)对磨时的磨损机制。销盘磨损实验结果显示：PCD薄膜相比于 WC-Co 具有较低的摩擦系数及较高的耐磨性。WC-Co 在与 TC1对磨时，磨损机制主要为磨料磨损。PCD 薄膜与 TC1对磨过程中，一直存在有金刚石晶粒与对磨副 TC1的切削作用；而在磨损后期，磨屑堆积产生的致密氧化 TC1相对磨损过程也有着直接的影响。
목전，금강석피인위시제비가공태합금도층도구적이상재료，단시관우금강석도층여태합금간마손궤제적연구심소。위차，본실험이용열사화학기상침적(HFCVD)재경질합금(WC-Co)기체상제비취정금강석(PCD)박막병연구기여 Ti-2Al-1.5Mn(TC1)대마시적마손궤제。소반마손실험결과현시：PCD박막상비우 WC-Co 구유교저적마찰계수급교고적내마성。WC-Co 재여 TC1대마시，마손궤제주요위마료마손。PCD 박막여 TC1대마과정중，일직존재유금강석정립여대마부 TC1적절삭작용；이재마손후기，마설퇴적산생적치밀양화 TC1상대마손과정야유착직접적영향。
Diamond coatings present the perfect cutting performance of tools for machining titanium and its alloys.However,the influence of this coating on the wear mechanism has not been elucidated yet.In this test, on-disc wear tests against Ti-2Al-1.5Mn(TC1)balls had been performed to characterize the wear performance of a polycrystalline diamond(PCD) coating on tungsten carbide (WC-Co) produced by hot filament chemical vapor deposition(HFCVD).The PCD coating exhibited lower friction coefficient and high wear resistance than those of the WC-Co under same testing condition.For WC-Co,abrasive wear was the main wear mechanism. In contrast to that,the PCD coating was worn by microcuts in the on-disc test.Compact oxidized TC1 debris also had a great effect on its wear mechanism.