Triple ion beam cutting of diamond/Al composites for interface characterization

Ji, Gang; Tan, Zhanqiu; Shabadi, Rajashekhara; Li, Zhi Qiang; Grünewald, W.; Addad, Ahmed; Schryvers, D.; Zhang, Di

doi:10.1016/j.matchar.2014.01.008

Cited by 17 publications

(8 citation statements)

References 20 publications

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“…Although chemical and electrochemical etching methods can reveal certain interfacial reaction products like Al 4 C 3 by extracting the Al matrix [19], they cannot reserve true interfacial states and terribly wash off nanoscale interfacial features without strong bonding with the diamond surface. To overcome these problems, a triple ion beam (TIB) cutting technique has been successfully applied to acquire a flat surface without additional artifacts [20].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, in this work in-depth interfacial characterization of the SPSed and VHPed diamond (40 and 50 vol.%)/Al composites has been carried out at length scales from the macro to nanoscale in order to evaluate the feasibility of SPS and VHP techniques to tailor such a bonding state. The TIB technique has been used to prepare nearly-perfect surface of samples to make true interfacial characterization possible at the micrometer scale and facilitate site-specific sample preparation by focus ion beam (FIB) [20]. Special attention has been paid to shedding light on the effect of thermal gradients spontaneously generated during the SPS process on interfacial configurations and bonding states of the diamond/Al composites.…”

Section: Introductionmentioning

confidence: 99%

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Tailoring interfacial bonding states of highly thermal performance diamond/Al composites: Spark plasma sintering vs. vacuum hot pressing

Tan

Addad

et al. 2016

Composites Part A: Applied Science and Manufacturing

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Interfacial configurations of the diamond/Al composites fabricated by vacuum hot pressing (VHP) and spark plasma sintering (SPS) have been investigated to evaluate feasibility of both techniques for tailoring interfacial bonding states, namely non-bonded, diffusion-bonded, partially and fully reaction-bonded interfaces. Multiscale interfacial characterization reveals that the unique diffusionbonded interface at the micrometer scale, being very favorable for enhancing global thermal conductivity (TC), has been achieved by conventional VHP technique due to its large processing window and homogenous thermal field. Comparatively, micrometer-scale and, even macroscopic (radial and axial) thermal gradients can be inevitably generated during the SPS process in rapid heating-cooling mode. As a result, the mixed interfacial bonding states have always been introduced in the SPSed samples which reduce the effectiveness of TC enhancement. The formation mechanisms of nanoscale interfacial Al 2 O 3 and Al 4 C 3 at the diamond/Al interface are also discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tailoring interfacial bonding states of highly thermal performance diamond/Al composites: Spark plasma sintering vs. vacuum hot pressing

Tan

Addad

et al. 2016

Composites Part A: Applied Science and Manufacturing

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“…A clean and smooth surface of the sample without introducing artefacts like scratches is nearly impossible using abrasive diamond suspensions or polishing pads. This is especially the case, if a specimen contains minerals of different hardness [8] or is embedded in resin [9]. During mechanical polishing, the softer material (e.g.…”

Section: Introductionmentioning

confidence: 99%

Argon Broad Ion beam sectioning and high resolution scanning electron microscopy imaging of hydrated alite

Kleiner,

Matthes,

Rößler

2021

Preprint

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Scanning electron microscopy (SEM) imaging is able to visualize micro-to nano-structures of cement and concrete. A prerequisite is that the sample preparation preserves the native structure of the specimen. In this study, argon Broad Ion Beam (BIB) sectioning is compared to state-of-the-art sample preparation (resin embedding, polishing) for hydrated alite. Additionally, it is investigated if during BIB, sample cooling is beneficial to avoid deterioration of cement hydrates. The aim is to quantitatively measure pore size distributions in hardened alite pastes.Therefore, not only optimized sample preparation but also optimized imaging conditions are investigated. Finally, it is demonstrated that by image analysis pores down to a diameter of 5 nm in hydrated alite pastes can be quantitatively analysed.

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“…Just as Ji et al [19] mentioned, it is almost impossible to obtain an even surface at a metal/diamond interface by using FIB only. As a significant modification, they employed triple ion beam (TIB) to firstly polish the sample surface and then cut to TEM foils by using FIB.…”

Section: Introductionmentioning

confidence: 99%

“…As a significant modification, they employed triple ion beam (TIB) to firstly polish the sample surface and then cut to TEM foils by using FIB. This novel route has been demonstrated in the preparation of TEM foils for Al/diamond composites [19]. Also, the diamond particles can be extracted from the Cu/diamond composites by dissolving the Cu matrix in a solution [20], enabling the investigation of the Ti coating on the diamond particles.…”

Section: Introductionmentioning

confidence: 99%