Residual stresses and debonding of diamond films on titanium alloy substrates

Chandra, L.; Chhowalla, Manish; Amaratunga, G. A. J.; Clyne, T.W.

doi:10.1016/0925-9635(95)00431-9

Cited by 38 publications

(33 citation statements)

References 21 publications

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“…Table 6 compares the typical properties of CVD diamond and titanium. CVD diamond and titanium have a high thermal expansion mismatch, which has been thought to be responsible for the high compressive stress in the film and relatively poor film adhesion [158,159]. The internal compressive stress may reach 8 GPa and strongly depends on the substrate temperature during deposition.…”

Section: Chemical Vapor Depositionmentioning

confidence: 99%

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Liu

Chu

Ding

2004

Materials Science and Engineering: R: Reports

3,023

1,477

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Titanium and titanium alloys are widely used in biomedical devices and components, especially as hard tissue replacements as well as in cardiac and cardiovascular applications, because of their desirable properties, such as relatively low modulus, good fatigue strength, formability, machinability, corrosion resistance, and biocompatibility. However, titanium and its alloys cannot meet all of the clinical requirements. Therefore, in order to improve the biological, chemical, and mechanical properties, surface modification is often performed. This article reviews the various surface modification technologies pertaining to titanium and titanium alloys including mechanical treatment, thermal spraying, sol-gel, chemical and electrochemical treatment, and ion implantation from the perspective of biomedical engineering. Recent work has shown that the wear resistance, corrosion resistance, and biological properties of titanium and titanium alloys can be improved selectively using the appropriate surface treatment techniques while the desirable bulk attributes of the materials are retained. The proper surface treatment expands the use of titanium and titanium alloys in the biomedical fields. Some of the recent applications are also discussed in this paper. #

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Section: Chemical Vapor Depositionmentioning

confidence: 99%

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Liu

Chu

Ding

2004

Materials Science and Engineering: R: Reports

3,023

1,477

View full text Add to dashboard Cite

show abstract

“…Consequently, it results in formation of amorphous calcium phosphate and reduction of crystallinity. Although thermal spraying has been applied in coating teeth root, knee and shoulder implants, the thermal mismatch between the coating and the substrate, which leads to poor bonding strength, limits its further application [19,20].…”

Section: Physicochemical Methodsmentioning

confidence: 99%

Surface Modification of Titanium and its Alloys for Biomedical Application

Luo

Jiang

Wei

et al. 2014

AMR

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Titanium and its alloys have excellent properties and are promising biomaterial in medical engineering field. A bioactive surface on a Ti substrate is a prerequisite for great performance and long service life of implants. Based on the mechanism for inducing cell/tissue responses, three kinds of methods, namely morphological, physicochemical and biochemical methods, are reviewed in this paper. Hybrid methods that integrate individual methods or have additional functions are also discussed. Disciplines Engineering | Science and Technology Studies

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“…Bipolar plates (BPPs) are one of the most important components of PEMFCs [3,4]. The BPPs account for approximately 60-80% of the total weight and 18-28% of the total cost of the PEMFC [8][9][10]. The BPPs account for approximately 60-80% of the total weight and 18-28% of the total cost of the PEMFC [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The main purpose of the BPP is to evenly distribute the reactant gases, provide an electrically conductive pathway and facilitate water removal from the cell [5][6][7]. However, graph-ite BPPs are brittle, have poor mechanical properties and high manufacturing costs [8][9][10][11][12]. Therefore, it is essential to explore light and low-cost BPPs to make PEMFC commercially viable.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistant Al‐Cr‐Mo Alloy Coating on Type 316L Stainless Steel Bipolar Plates for Proton Exchange Membrane Fuel Cell Applications

et al. 2019

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The most important issues that plague wider use of polymer electrolyte membrane fuel cells (PEMFCs) are insufficient corrosion resistance, electrical conductivity and wettability of metallic bipolar plates (BPPs). To address these issues, an amorphous Al-Cr-Mo ternary alloy coating is applied on type 316L stainless steel using direct current magnetron sputtering. The electrochemical corrosion behavior of bare and alloy coated specimens has been investigated by polarization and electrochemical impedance spectroscopy techniques under simulated fuel cell working environment consisting of 0.5M H 2 SO 4 at 70 + 2°C. The results indicate that the corrosion current density of the alloy coated specimen is approxi-mately 0.2 mA cm -2 showing a reduction of two orders of magnitude. The polarization resistance increased by an order of magnitude and the interfacial contact resistance (ICR) is reduced significantly (45 and 48 mΩ cm 2 in the simulated anode and cathode environments, respectively) due to the application of the coating. The chromium and molybdenum enrichment on the surface of coated specimen, as revealed by X-ray photoelectron spectroscopy, is proposed to be responsible for the improved corrosion resistance. Further, the coating is expected to show significantly better water management due to high hydrophobicity than the bare stainless steel.

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Residual stresses and debonding of diamond films on titanium alloy substrates

Cited by 38 publications

References 21 publications

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Surface Modification of Titanium and its Alloys for Biomedical Application

Corrosion Resistant Al‐Cr‐Mo Alloy Coating on Type 316L Stainless Steel Bipolar Plates for Proton Exchange Membrane Fuel Cell Applications

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