An XPS study of laser-fabricated polyimide/titanium interfaces

Georgiev, Daniel G.; Baird, Ronald J.; Newaz, Golam; Auner, Gregory W.; Witte, Reiner; Herfurth, Hans

doi:10.1016/j.apsusc.2004.03.261

Cited by 69 publications

(43 citation statements)

References 16 publications

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“…Since the Ti/KaptonFN laser joints are fabricated in ambient conditions, TiO 2 /polymer interfaces will be produced, rather than Ti/polymer interfaces. The results from an XPS study of laser fabricated Imidex/Ti interfaces in ambient conditions gave evidence for very sharp interface based on the creation of chemical bond between the Ti and the O and C contained in Imidex polyimide [15].…”

Section: Introductionmentioning

confidence: 97%

XPS study of laser fabricated titanium/KaptonFN interfaces

Georgiev

Sultana

Baird

et al. 2008

Applied Surface Science

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Section: Introductionmentioning

confidence: 97%

XPS study of laser fabricated titanium/KaptonFN interfaces

Georgiev

Sultana

Baird

et al. 2008

Applied Surface Science

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“…In the case of as-received Ti powder, the main component at about 530.1 eV can be assigned to oxygen from the TiO 2 . The broad shoulder extending from 531 to 534 eV consists of two possible types of oxygen sites such as C-O-C and >C = O groups [22]. There were no significant differences in the peak intensity of O 1s before and after etching of as-received Ti powder, indicating an existence of thick Ti oxide in nature.…”

Section: Resultsmentioning

confidence: 82%

Surface Modification of Self-Consolidated Microporous Ti Implant Compacts Fabricated by Electro-Discharge-Sintering in Air

Yoon

Kim

et al. 2017

Archives of Metallurgy and Materials

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A single pulse of 0.75-2.0 kJ/0.7g of atomized spherical Ti powders from 300 mF capacitor was applied to produce a microporous Ti implant compact by electro-discharge-sintering (EDS). A solid core in the middle of the compact surrounded by a microporous layer was found. X-ray photoelectron spectroscopy was employed to study the surface characteristics of the EDS Ti compact and it revealed that Ti, C and O were the main constituents on the surface with a smaller amount of N. The surface was lightly oxidized and was primarily in the form of TiO 2 resulting from the air oxidation during EDS processing. The lightly oxidized surface of the EDS compact also exhibited Ti nitrides such as TiN and TiON, which revealed that the reaction between air constituents and the Ti powders even in times as short as 128 msec.

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“…In our previous study, we have analyzed the laser-fabricated titanium/polyimide (TiPI) joints, and observed the presence of a sharp interface based on the creation of chemical bonds between Ti, and O and C contained in PI. 5,6 Titanium is believed to interact primarily with the oxygen double Bonding mechanisms of laser-fabricated microjoints 507 bonds to carbon in the carbonyl groups (>C O), which form part of the PI molecular chains, and to form bonding configurations of the type Ti-O-C. 5,6 In our other related works, we have presented the mechanical characterization of titanium coated glass/polyimide (TiGPI) bonds. 4,7,8 In this case, the glass substrate was coated with a thin titanium layer because the reactivity of titanium with PI was already verified through Refs 5 and 6.…”

Section: Introductionmentioning

confidence: 99%

Bonding mechanisms of laser‐fabricated titanium/polyimide and titanium coated glass/polyimide microjoints

Mian

Sultana

Auner

et al. 2007

Surface & Interface Analysis

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In this study, two bimaterial joining systems, namely, titanium coated glass/polyimide (TiGPI) and titanium/polyimide (TiPI) are considered. The joints were prepared by employing transmission type laser-joining procedure. Both the TiGPI and TiPI bimaterial systems were subjected to tensile loading using a microtester, and failure loads per unit bond length were documented. The average failure strengths of the TiPI and TiGPI samples were found to be 5.1 and 7.3 N/mm, respectively. It is thus clear from the failure data that the TiGPI joints are stronger (1.4 times) than the TiPI joints although same chemical bonds between titanium and polyimide (PI) exist for both the systems. It is thus believed that material surface morphology has contributed to such variation in the microjoint strengths. Later, atomic force microscopy (AFM) of titanium surfaces of both titanium coated glass and titanium foil was performed, and was observed that they had root mean squared (RMS) surface roughnesses of 220 and 55 nm, respectively. The surface roughness provides improved surface contact area, number of chemical bonds, and mechanical interlocking that may have resulted in higher bond strength for the TiGPI system.

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An XPS study of laser-fabricated polyimide/titanium interfaces

Cited by 69 publications

References 16 publications

XPS study of laser fabricated titanium/KaptonFN interfaces

XPS study of laser fabricated titanium/KaptonFN interfaces

Surface Modification of Self-Consolidated Microporous Ti Implant Compacts Fabricated by Electro-Discharge-Sintering in Air

Bonding mechanisms of laser‐fabricated titanium/polyimide and titanium coated glass/polyimide microjoints

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