1、文章:Effect of surface treatment on the adhesion of DLC film on 316L stainless steel
M.M. Morshed-----------Surface and Coatings Technology
样品制备:A neutral beam saddle field source (Microvac 1200DB, Ion Tech. Ltd.) was used to deposit DLC films from an acetylene precursor on implant quality 316L stainless steel substrates. Two different substrates in the form of round discs with diameter 25 mm and thickness 0.2 and 8 mm were used. Substrates were polished with emery paper of grit no. 1200 before final polishing with 0.25 mm diamond suspension. The substrates were then cleaned consecutively in 1-1-1 trichloroethane and acetone for 30 min each in an ultrasonic bath, in order to remove any organic residue. They were subsequently dried in air prior to conducting the experiments. The substrates were placed at 400 mm distance from the source in the chamber. The vacuum chamber was initially pumped down to <6 x10-7 mbar. During deposition, the acetylene (C2H2) gas was held at the same pressures as used during etching. The anode current in the source was kept constant at 1.0 A for both etching and deposition and the anode voltage varied in the range of 0.95–1.6 kV. It has been shown that the energy of the atoms in the neutral beam under these anode voltage conditions is approximately equal to the anode voltage when they leave the source. The deposition time was kept constant at 1 h.
粘着力评价方法:the Rockwell C test and the pull-off test.
2、文章:A tribological study of the hybrid lubrication of DLC films with oil and water
R.P.C.C. Statuti a,∗--------------wear
样品制备:(PE-CVD)The DLC films were deposited by using a new concept of low cost, pulsed-DC discharge under controlled conditions to obtain maximum hardness, minimum stress, and a maximum deposition rate. DLC film with a 2 μm thicknesswas deposited on titanium alloy and 316L stainless steel plates (2.0cm×1.0 cm×0.2 cm) under strictly controlled conditions. To guarantee adherence and avoid bumps, the titanium alloy (Ti6Al4V) and 316L plates were polished and then cleaned in ultrasonic(超声波) bath in isopropyl alcohol(异丙醇) for 5 min and then cleaned in a vacuum chamber under 10 Pa pressure of argon (氩)discharge for 30min.
拉曼光谱(Microstructural analysis of the DLC film, before and after the tribological test)
3、文章:Antibacterial activity of DLC and Ag–DLC films produced by PECVD technique
F.R. Marciano a,b----------Diamond & Related Materials
DLC膜同样利用PE-CVD制备(参数详见原文),中间过渡层为硅(~200 nm)
In order to enhance the DLC film adhesion to metallic surfaces, a thin amorphous silicon interlayer(~200 nm) were deposited using silane as the precursor gas。
样品经丙酮和乙醇超声清洗后放入真空室,抽气至312 ×10 - 3 Pa 后,打开离子源清洗样品,样品清洗25 min 后,开始制备过渡层和DLC 膜。整个镀膜过程中,碳源共工作了25 万个脉冲。在制备DLC 薄膜的过程中真空室的压强保持在317 ×10 - 3 Pa 以下。
测试:附着力、膜厚和应力、硬度、摩擦系数、薄膜结构
膜厚、应力是利用Dektak 8 针式表面轮廓仪测试的
5、文章:Biomedical effect of tissue contact with metallic material used for body piercing modified by DLC coatings
D. Bociaga---------Diamond & Related Materials
Substrate materials: 316L stainless steel
DLC膜:
All modified sticks were sterilized in steam sterilizer (蒸气灭菌器)and put into the 96% ethanol(乙醇).j
To modify surfaces of body piercing implants (sticks) two PACVD methods were used: RF PACVD—radio frequency and MW/RF PACVD—microwave/radio frequency.
具体方案次文也是引用其他文章的实验参数。
活体实验,研究DLC膜对植入金属材料对周围组织影响的改良情况
6、文章:Effect of stress on the passivation of Si-DLC coating as stent materials in simulated body environment
N.D. Nam---------Diamond & Related Materials
这篇文章主要研究316L不锈钢表面镀 Si-DLC膜在模拟体液中的应力腐蚀(SCC)问题。研究手段by slow-strain-rate test (SSRT),
另外:constant load test (CLT), and electrochemical impedance spectroscopy (EIS).
7、文章:Tribocorrosion behaviour of DLC-coated 316L stainless steel
M. Azzia---------------wear
两种不同的过渡层:
Two different methods for interface engineering between the 316L substrate and the DLC film were used in this study: (1) nitriding of the stainless steel surface(表面渗氮) (2) deposition of amorphous hydrogenated silicon nitride bond layer.(非晶氢化氮化硅层)