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Corrosion resistance of multilayer and gradient coatings deposited by PVD and CVD techniques
Corrosion PVD CVD Ceramic tools materials
2009/12/1
Purpose: The aim of the research was the investigation of the corrosion resistance and structure of the TiN,
TiN+multiTiAlSiN+TiN, TiN+TiAlSiN+TiN, TiN+TiAlSiN+AlSiTiN coatings deposited by PVD proce...
Properties of the multicomponent and gradient PVD coatings
Tool materials Gradient coatings Cutting ability test
2009/12/1
Purpose: This paper presents investigation results of the properties of the multicomponent (Ti,Al)N and gradient
Ti(C,N) wear resistant coatings, deposited with the PVD process onto the substrate fro...
Surface modification and corrosion behavior of Ni-Ti alloy used for urological implants
Metallic alloys Biomaterials Corrosion
2009/12/1
Purpose: The work presents the influence of the surface treatment of Ni-Ti alloy, intended for implants applied
in urogenital surgery, on their corrosion resistance. The tests were carried out in the...
Corrosion resistance of titanium in water solution of hydrochloric acid
Metallic alloy Corrosion Titanium
2009/12/1
Purpose: Most of conducted research in the area of titanium corrosion are concentrated on determine the
corrosion resistance in water solution of hydrochloric acid medium at high temperatures. Reco...
Corrosion behaviour of Co-Cr-W-Ni alloy in diverse body fluids
Corrosion Working properties of materials and products Metallic materials Biomaterials
2009/12/1
Purpose: The aim of the work was evaluation of corrosion resistance of implantable Co-Cr-W-Ni alloy in
simulated body fluids: human blood (artificial plasma), urine (artificial urine) and bone tis...
Corrosion resistance of Cr-Ni-Mo steel after sterilization process
Corrosion Biomaterials Steam sterilization
2009/12/1
Purpose: The aim of the work was to evaluate how the process of high pressure steam sterilization influences the
pitting corrosion resistance of Cr-Ni-Mo steel used for implants production.
Design/...
Influence of bone union electrostimulation on corrosion of bone stabilizer in rabbits
Metallic alloy Biomaterials Corrosion Passive-carbon layer
2009/12/1
Purpose: The aim of the work was determination of influence of the selected methods and parameters of bone
union electrostimulation on corrosion of stainless steel implants coated with passive and p...
Chemical composition of passive layers formed on metallic biomaterials
Metallic alloys Biomaterials XPS
2009/12/1
Purpose: In the paper the results of chemical composition investigations of passive layers formed on implants
made of Cr-Ni-Mo steel, Co-Cr-W-Ni alloy and Ni-Ti alloy have been presented.
Design/me...
采用电弧离子镀技术在Ti60合金表面制备了Ti-48%Al-12%Cr(0.2%Si, 0.1%Y, 原子分数)防护涂层. 利用XRD, SEM和EDS研究了Ti60合金及Ti-Al-Cr(Si, Y)涂层在Na2SO4和75%Na2SO4+25%K2SO4 (质量分数)中800及850℃下的热腐蚀行为. 结果表明, Ti60合金基体在800和850℃的硫酸盐中发生了严重的腐蚀,腐蚀产物发生了明显...
含Fe和Mn的Ni30Cu70固溶体团簇模型与耐蚀性研究
Cu-Ni合金 Fe(Mn)添加 固溶体模型
2009/11/30
提出了一个极限固溶体合金的团簇模型, 在此基础上优化设计了添加Fe和Mn的Ni30Cu70 (原子分数,\%)固溶体合金成分. 在该模型中, 固溶的Fe和Mn以Ni为第一近邻形成12配位立方八面体原子团簇(Fe1-xMnx)Ni12而分散到Cu基体中, 因此极限固溶体合金成分为 [M1/13Ni12/13]30Cu70=[(Fe1-xMnx)Ni12]Cu30.3, M=(Fe1-xMnx). 采...
镍基固溶体增韧Cr13Ni5Si2合金在含Cl-溶液中的腐蚀行为
金属硅化物 腐蚀 极化曲线
2009/11/30
采用极化曲线、Tafel图和电化学阻抗谱(EIS)技术, 研究了镍基固溶体增韧Cr13Ni5Si2金属硅化物合金
在不同Cl-浓度Na2SO4+NaCl溶液中的电化学腐蚀行为, 并对其表面钝化膜进行了X射线光电子能谱(XPS)分
析. 结果表明: 由于超高的Cr含量易于在表面形成以Cr2O3为主的稳定钝化膜以及组成相Cr13Ni5Si2
和Cr3Ni5Si2高的化学稳定性, 合金在不同Cl-...
含氯介质超临界水氧化过程中几种镍基合金腐蚀的实验研究
超临界水氧化 腐蚀 含氯废水
2009/11/11
超临界水氧化过程中，含氯化合物水溶液对普通不锈钢具有极强的腐蚀性. 使用超临界水氧化反应装置，研究了4种镍基合金不锈钢试样(1Cr18Ni9Ti, 316L, 0Cr18Ni12Ti和QLC12)在超临界水氧化过程中(400~620℃, 28~32 MPa)处理含氯废水时的腐蚀情况. 经过30 d的实验，用金相光学显微镜和扫描电子显微镜观测试样腐蚀的形貌. 结果表明，4种合金在15%(w)含氯水溶...
镍铁尖晶石基金属陶瓷惰性阳极的电解腐蚀行为
陶瓷 惰性阳极 铝电解 腐蚀率
2009/11/10
采用粉末冶金法制备了10%Ag-NiFe2O4/NiO金属陶瓷惰性阳极，阳极为圆柱形，直径50 mm，高15 mm. 在960℃下进行电流密度为0.8 A/cm2的铝电解实验，电解时间为10 h. 研究了阳极在Na3AlF6-5%CaF2-5%Al2O3熔体中的腐蚀行为. 电解后的阳极外观尺寸略有变化，但没有发生阳极肿胀及阳极表面起层、剥离的现象，表现出较好的耐腐蚀性. 计算得到阳极腐蚀率为1.5...
烧结Al2O3陶瓷在海水中的耐腐蚀性能研究
烧结氧化铝陶瓷 耐腐蚀性能 表征
2009/10/21
通过对SEM、孔径分布、孔隙率、弯曲强度等多项性能的测试,研究了由两性氧化物氧化铝烧结而成的陶瓷材料在海水中腐蚀的可能性. 研究结果表明,烧结氧化铝陶瓷在海水中浸泡一年后未发生腐蚀反应.