Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/9637
標題: 電解沉積氧化鋯對生醫用Ti6Al4V合金上性質之改善
The Improvement of Electrolytic Deposition of ZrO2 Thin Film on the Performance of the Ti6Al4V Alloy
作者: 林俊甫
Lin, Chun Fu
關鍵字: 電解沉積;氧化鋯;Ti6Al4V合金;Electrolytic Deposition;ZrO2;Ti6Al4V Alloy
出版社: 材料工程學研究所
摘要: 
本研究使用生醫材料Ti-6Al-4V合金為基材,利用電化學方法電解沉積氧
化鋯陶瓷薄膜,並藉由控制濃度、電位、時間等電化學參數,了解各參數
對氧化膜的影響。經燒結處理後再以恆定電位儀(EG&G Model 273A
Potentiostat)、SEM、XRD、OM、刮痕試驗機等儀器觀察分析氧化鋯薄膜
的性質。 實驗結果顯示,在不同濃度的氧化鋯硝酸鹽溶液中,隨著濃
度的增加沉積電位(絕對值)漸增,欲達同一厚度所須時間愈少。其中,C2
是最理想的濃度,沉積較均勻,乾燥時不易破裂,所需沉積時間適中,較
具經濟效益。而裂縫的大小跟膜厚有很大的關係,膜太厚則會有泥巴式裂
縫(mud-crack)的現象,沉積均勻的薄膜,乾燥後較不易產生裂縫。 分析
循環極化實驗的結果,發現未處理試片與具氧化鋯薄膜塗層的Ti-6Al-4V
合金,實際上並不參與反應,試片亦無腐蝕之發生。在NaCl溶液中實際上
只有以下幾個反應發生:(1) O2 + 2H2O + 4e- 4OH- ;(2) 2H+ + 2e-
H2 ;(3) 2H2O +2e- H2 + 2OH- 。此外,具氧化鋯薄膜塗層的試片,
其E02較未處理試片高,因未處理試片較容易吸附OH-,而通氮氣(N2)會降
低E02。經由刮痕試驗可發現,在0~30 N的荷重下,並未有氧化鋯脫落的
現象。此結果顯示,鍍膜在Ti-6Al-4V合金之附著力能克服1700 MPa之荷
重應力,而此應力是一般人體運動中髖骨荷重之50倍,使用在生醫植入材
中可避免與超高分子量聚乙烯(UHMWPE)間之磨耗,增加使用年限,減少病
人手術的次數。

In this research, Ti-6Al-4V alloy was selected as the subtract
and electrolyticically deposited with ZrO2 in an aqueous
solution of zirconyl nitrate (ZrO(NO3)2). By controlling the
electrochemical parameters such as concentration, potential, and
time, the effect of these parameters on the thin film was
investigated. From the Potentiostat spectroscopy, scanning
electron microscopy(SEM), X-ray diffractometer(XRD), optical
microscopy (OM), and scratch test, the characteristic of the
thin film was analyzed.It was found that the deposition
potential is increased with the concentration, but the
deposition time is decreased for the same film thickness. In C2
concentration and for suitable deposition time, a uniform thin
film of deposition without crack was found, so it had the
commercial value. On the other hand, the mud-cracks were found
if the film was too thick.In the cyclic polarization
experiments, the as-received specimens and the specimens with
ZrO2 film were not to be corroded actually. Three reactions were
found in 0.6 M NaCl aqueous solution: (1)O2 + 2H2O + 4e- 4OH-
;(2)2H+ + 2e- H2 ;(3)2H2O +2e- H2 + 2OH-. Additionally,
the specimens coated with ZrO2 film had higher E02(the upper
redox equilibrium potential) than the as-received specimens
because the latter had the stronger tendency to attract the OH-,
and the E02 would reduced if the solution was According to the
scratch test, the peeling of ZrO2 from the substrate was not
found under the load of 30 Newton. The result showed that the
adhesion of ZrO2 coating on Ti-6Al-4V alloy substrate can resist
the loading stress of 1700 MPa which is 50 times of the loading
of hip joints during gait. When it is used as the implant
material, it can reduce the wear debris with the UHMWPE and
enhance it*s endurance.
URI: http://hdl.handle.net/11455/9637
Appears in Collections:材料科學與工程學系

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