| 研究生: |
李健銘 Li, Chien-Ming |
|---|---|
| 論文名稱: |
摻雜鋯元素於非含氫類鑽碳膜之磨潤特性研究 The research on tribological properties of hydrogen-free diamond-like carbon films with zirconium dopant |
| 指導教授: |
蘇演良
Su, Yean-Liang |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年: | 2002 |
| 畢業學年度: | 90 |
| 語文別: | 中文 |
| 論文頁數: | 115 |
| 中文關鍵詞: | 鋯金屬 、微孔鑽削 、非含氫類鑽碳膜 、車削 |
| 外文關鍵詞: | micron-drilling, hydrogen-free DLC, turning, zirconium |
| 相關次數: | 點閱:118 下載:2 |
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類鑽碳膜由於具備碳的sp3鍵結與sp2鍵結,因而包含了許多特性如高硬度、低摩擦、高化學鈍性、高熱傳等。類鑽碳膜多樣化的性質使其能應用於不同領域。因此,本實驗即以非含氫的類鑽碳膜摻雜鋯金屬作為研究主題,探討偏壓與不同鋯含量對a-C:Zr鍍膜在磨潤性質上的影響。
第一階段變化四種偏壓進行濺鍍。四種鍍膜中,以偏壓-75V製作之a-C:Zr鍍膜有最高的硬度。在磨耗試驗中,偏壓-75V之鍍膜與S45C線磨出現0.088的低摩擦係數,其磨痕深度也最淺,顯見其優越的潤滑效果。
第二階段變化11種不同鋯含量的a-C:Zr鍍膜進行磨耗試驗與切削實驗。在磨耗試驗中,不論在碳化鎢或是高速鋼基材上,以10N及100N之荷重進行實驗皆出現低摩擦係數區域,即鋯含量在4.4 – 25.35 at%之間,在此區間的a-C:Zr鍍膜有優良的潤滑效果。但在車削中碳鋼的實驗中,鋯含量在4.4 – 25.35 at%之間的a-C:Zr鍍膜無法發揮潤滑與保護車刀之功效,反而是鋯含量45.76 at%以上之鍍膜,有較佳的保護效果。
在PCB鑽削實驗中,摩擦係數最低的鍍膜只能些微降低刀具磨耗,而鋯含量48.14 at%的鍍膜卻能大幅降低刀具磨耗同時提升刀具壽命達四倍以上。
DLC (diamond-like carbon) contains sp3 and sp2 bonding; therefore, it has many desirable characteristics such as high hardness, low friction coefficient, good chemical inertness, high thermal conductivity, etc. In this experiment, zirconium was doped into non-hydrogenated DLC films to make a-C:Zr films. Then the influence of substrate biases and zirconium contents on tribological properties of DLC films was discussed.
At first stage, four kinds of substrate biases were sputtered. Among the four films, a-C:Zr film produced by –75V substrate bias had the highest hardness value. In the SRV wear tests with S45C, a-C:Zr film produced by –75V substrate bias also showed a 0.088 low friction coefficient value and the shallowest wear mark, an indication of its excellent lubrication.
At final stage, a-C:Zr films with different zirconium contents were sputtered. In the SRV wear tests, S45C counterparts and two loads, 10N and 100N, were used. The experiment results show that a-C:Zr films with zirconium contents between 4.4-25.35 at% have low friction coefficients when load was 10N or 100N. In the turning tests, S45C was still used. a-C:Zr films which had zirconium contents above 45.76 at% show better wear resistance than the others. In the PCB drilling tests, a-C:Zr film with 48.14 at% zirconium contents not only reduced the wear of micro-drill but prolonged the tool life. The a-C:Zr film with 48.14 at% zirconium contents extended tool life by 4 folds.
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