Skip to content
DraconiticResearch
Search Sources API
190,851 studies31 sourcesUpdated 16 min ago
PreprintCC BY-NC-NDChemRxiv

Failure-Mode-Driven Methodology to Unravel Interfacial Chemical Bonding in Laser-Welded Polyamide-6.6–Titanium Interfaces

  • P. Hirchenhahn1
  • A. Al Sayyad2
  • J. Bardon3
  • P. Plapper2
  • L. Houssiau1
  • Pierre HIRCHENHAHN
  1. 1Namur Institute of Structured Materials (NISM, rue de Bruxelles 61, Namur, BELGIUM, 5000
  2. 2Research Unit in Engineering Science, Université de Luxembourg, 6 rue de Coudenhove-Kalergi, Luxembourg, L-1359
  3. 3Luxembourg Institute of Science and Technology, 5 avenue des Hauts-Fourneaux, Esch-sur-Alzette, LUXEMBOURG, L-4362
Open at sourcePDFDOICite

Abstract

The demand for hybrid polymer-metal assemblies is growing worldwide, addressing challenges in fields such as biomedical implants. Among assembling techniques, laser welding is gaining attention for its quick processing, minimal pretreatment, high design freedom, and reproducibility. While these assemblies show strong mechanical resistance, understanding the root causes of adhesion—particularly potential chemical bonds at the interface—remains challenging, especially for thick assemblies. Previous work suggests breaking assemblies and dissolving the remaining polymer on the metallic surface to access the interface, an approach effective for cohesive failure modes. Here, we explore assemblies with mixed or adhesive failure modes using this breaking-and-dissolving combination. Results suggest that the methodology for accessing interfaces should be adapted to the assembly's failure mode: breaking and dissolving for cohesive failure, but breaking alone for mixed or adhesive failure. Both approaches were tested on laser-welded thick polyamide-6.6/titanium assemblies exhibiting a mixed failure mode. Interfaces were analyzed using XPS and ToF-SIMS. The methodology successfully provided access to interfacial molecular information, supporting previous findings that show the formation of a C-O-Ti bond at the interface resulting from laser welding.

Related

  1. Nitrogen-Centric Optimization of Polyamide Chemical Recycling: A Reaction Network Flux Analysis with New Metrics for Nitrogen Atom Economy and Nitrogen Footprint
    Huiting Yang
    ChemRxivPreprintCC BYFull textMaterials & polymersChemRxiv
  2. Interfacial engineering in sulfide-based all-solid-state batteries: from cathode/anode interfaces to electrolyte modification
    Linghao Deng, Jiachen Ying, Yuchen Yang +1
    Chemical sciencePeer-reviewedCC BY-NCFull textOrganic chemistryEurope PMCEurope PMCPMC
  3. Combinatorial Steiner Methodology for Efficiently Exploring Chemical Space in CO ₂ Hydrogenation to Fischer-Tropsch Reactivity via High-throughput Experimentation
    Nestor Iwanojko, Erwin Lam, Christophe Copéret
    ChemRxivPreprintCC BYFull textCatalysisChemRxiv
  4. Interfacial assembly and pH-driven structural transitions in sodium caseinate–pectin complexes at oil–water interfaces
    Wei Liao, Abdelhamid Elaissari, Adem Gharsallaoui
    Food StructurePeer-reviewedCC BYGeneral chemistryHAL
  5. Cross-Linking Simulation at Metal Oxide-Thermoset Interfaces Using Quantum Chemical and Molecular Dynamics Methods
    Yingxiao Xi, Kaiwen Li, Takahisa Ishiyama +3
    ACS OmegaPeer-reviewedCC BY-NC-ND 4.0Full textGeneral chemistryCrossref

Cite

BibTeXRIS
BibTeX
@misc{hirchenhahn2026failuremodedriven,
  title = {{Failure-Mode-Driven Methodology to Unravel Interfacial Chemical Bonding in Laser-Welded Polyamide-6.6–Titanium Interfaces}},
  author = {P. Hirchenhahn and A. Al Sayyad and J. Bardon and P. Plapper and L. Houssiau and Pierre HIRCHENHAHN},
  howpublished = {ChemRxiv},
  year = {2026},
  month = sep,
  doi = {10.26434/chemrxiv.15009068/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009068/v1},
  note = {CC BY-NC-ND},
}
RIS
TY  - UNPB
TI  - Failure-Mode-Driven Methodology to Unravel Interfacial Chemical Bonding in Laser-Welded Polyamide-6.6–Titanium Interfaces
AU  - P. Hirchenhahn
AU  - A. Al Sayyad
AU  - J. Bardon
AU  - P. Plapper
AU  - L. Houssiau
AU  - Pierre HIRCHENHAHN
PY  - 2026
DA  - 2026/09/18
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15009068/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009068/v1
AB  - The demand for hybrid polymer-metal assemblies is growing worldwide, addressing challenges in fields such as biomedical implants. Among assembling techniques, laser welding is gaining attention for its quick processing, minimal pretreatment, high design freedom, and reproducibility. While these assemblies show strong mechanical resistance, understanding the root causes of adhesion—particularly potential chemical bonds at the interface—remains challenging, especially for thick assemblies. Previous work suggests breaking assemblies and dissolving the remaining polymer on the metallic surface to access the interface, an approach effective for cohesive failure modes. Here, we explore assemblies with mixed or adhesive failure modes using this breaking-and-dissolving combination. Results suggest that the methodology for accessing interfaces should be adapted to the assembly's failure mode: breaking and dissolving for cohesive failure, but breaking alone for mixed or adhesive failure. Both approaches were tested on laser-welded thick polyamide-6.6/titanium assemblies exhibiting a mixed failure mode. Interfaces were analyzed using XPS and ToF-SIMS. The methodology successfully provided access to interfacial molecular information, supporting previous findings that show the formation of a C-O-Ti bond at the interface resulting from laser welding.
ER  -