Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
High dynamic stiffness mechanical structures with nanostructured composite coatings deposited by high power impulse magnetron sputtering
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Machine and Process Technology. Plasmatrix Materials AB, Sweden. (Machine and Process Technology)ORCID iD: 0000-0002-4677-7005
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Machine and Process Technology. Plasmatrix Materials AB, Sweden.
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
Show others and affiliations
2016 (English)In: Carbon, ISSN 0008-6223, E-ISSN 1873-3891, Vol. 98, p. 24-33Article in journal (Refereed) Published
Abstract [en]

Nanostructured Cu:CuCNx composite coatings with high static and dynamic stiffness were synthesized by means of plasma-enhanced chemical vapor deposition (PECVD) combined with high power impulse magnetron sputtering (HiPIMS). Scanning electron microscope (SEM) images and energy-dispersive X-ray spectroscopy (EDS) mapping from cross-sectioned samples reveals a multi-layered nanostructure enriched in Cu, C, N, and O in different ratios. Mechanical properties of the coatings were investigated by Vickers micro-indention and model tests. It was observed that copper inclusions as well as copper interlayers in the CNx matrix can increase mechanical damping by up to 160%. Mechanical properties such as hardness, elastic modulus and loss factor were significantly improved by increasing the discharge power of the sputtering process. Moreover the coatings loss modulus was evaluated on the basis of indentation creep measurements under room temperature. The coating with optimum properties exhibited loss modulus of 2.6 GPa. The composite with the highest damping loss modulus were applied on the clamping region of a milling machining tool to verify their effect in suppressing regenerative tool chatter. The high dynamic stiffness coatings were found to effectively improve the critical stability limit of a milling tool by at least 300%, suggesting a significant increase of the dynamic stiffness.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 98, p. 24-33
National Category
Composite Science and Engineering Production Engineering, Human Work Science and Ergonomics Applied Mechanics Nano Technology Other Physics Topics
Research subject
Materials Science and Engineering; Production Engineering; Solid Mechanics; Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-176864DOI: 10.1016/j.carbon.2015.10.074ISI: 000367233000003Scopus ID: 2-s2.0-84955307996OAI: oai:DiVA.org:kth-176864DiVA, id: diva2:868437
Projects
HiPPOCAMP
Funder
EU, FP7, Seventh Framework Programme, 608800
Note

QC 20160209

Available from: 2015-11-10 Created: 2015-11-10 Last updated: 2017-12-01Bibliographically approved
In thesis
1. High dynamic stiffness nano-structured composites for vibration control: A Study of applications in joint interfaces and machining systems
Open this publication in new window or tab >>High dynamic stiffness nano-structured composites for vibration control: A Study of applications in joint interfaces and machining systems
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Vibration control requires high dynamic stiffness in mechanical structures for a reliable performance under extreme conditions. Dynamic stiffness composes the parameters of stiffness (K) and damping (η) that are usually in a trade-off relationship. This thesis study aims to break the trade-off relationship.

After identifying the underlying mechanism of damping in composite materials and joint interfaces, this thesis studies the deposition technique and physical characteristics of nano-structured HDS (high dynamic stiffness) composite thick-layer coatings. The HDS composite were created by enlarging the internal grain boundary surface area through reduced grain size in nano scale (≤ 40 nm). The deposition process utilizes a PECVD (Plasma Enhanced Chemical Vapour Deposition) method combined with the HiPIMS (High Power Impulse Magnetron Sputtering) technology. The HDS composite exhibited significantly higher surface hardness and higher elastic modulus compared to Poly(methyl methacrylate) (PMMA), yet similar damping property. The HDS composites successfully realized vibration control of cutting tools while applied in their clamping interfaces.

Compression preload at essential joint interfaces was found to play a major role in stability of cutting processes and a method was provided for characterizing joint interface properties directly on assembled structures. The detailed analysis of a build-up structure showed that the vibrational mode energy is shifted by varying the joint interface’s compression preload. In a build-up structure, the location shift of vibration mode’s strain energy affects the dynamic responses together with the stiffness and damping properties of joint interfaces.

The thesis demonstrates that it is possible to achieve high stiffness and high damping simultaneously in materials and structures. Analysis of the vibrational strain energy distribution was found essential for the success of vibration control.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. p. ix, 71
Series
TRITA-IIP, ISSN 1650-1888
Keywords
Vibration control, High dynamic stiffness, Metal matrix composite, Nano structures, Plasma enhanced chemical vapour deposition (PECVD), High power impulse magnetron sputtering (HiPIMS), Adiabatic, Machining, Regenerative tool chatter
National Category
Nano Technology Production Engineering, Human Work Science and Ergonomics Composite Science and Engineering Fusion, Plasma and Space Physics Chemical Sciences Manufacturing, Surface and Joining Technology Applied Mechanics
Research subject
Production Engineering
Identifiers
urn:nbn:se:kth:diva-176869 (URN)978-91-7595-740-1 (ISBN)
Public defence
2015-12-01, M311, Brinellvägen 68, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
EU, FP7, Seventh Framework Programme, 608800EU, FP7, Seventh Framework Programme, 260048VINNOVA, E!4329VINNOVA, HydroMod
Available from: 2015-11-11 Created: 2015-11-10 Last updated: 2015-11-11Bibliographically approved

Open Access in DiVA

Carbon Nano Structure Composite(8334 kB)222 downloads
File information
File name FULLTEXT01.pdfFile size 8334 kBChecksum SHA-512
1b2a70982a83a8862c599f9a4e3d7c3ba900b8c8a0e925b521ce891ae2d2d21ad4bc11f49403436ed0d62befc76a4915d7ac7abbbc1edb1e40b53d417666eb36
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopusSciencedirect

Authority records BETA

Fu, Qilin

Search in DiVA

By author/editor
Fu, QilinRashid, Md Masud-UrNicolescu, Cornel-Mihai
By organisation
Machine and Process TechnologyProduction Engineering
In the same journal
Carbon
Composite Science and EngineeringProduction Engineering, Human Work Science and ErgonomicsApplied MechanicsNano TechnologyOther Physics Topics

Search outside of DiVA

GoogleGoogle Scholar
Total: 222 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 222 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf