High-Speed Laser Cladding (HSLC) is a direct metal deposition (DMD) technique derived from Laser Cladding (LC). In LC, a laser creates a melt-pool on the substrate in which metallic powder is delivered by a carrier gas and melted. In HSLC, the powder stream focus is slightly above the substrate, and most of the laser power is delivered to the powder in flight, allowing for a smaller melt-pool and higher deposition speeds. The accuracy and control of the powder stream (shape, density, flow) is crucial for high-quality and repeatable depositions. It is controlled by the architecture (hoses length, powder splits…) and various process parameters (gas flow, powder hopper rotational speeds…).
Qualifications:
• Intrinsic motivation and willingness to perform experimental work.
• Proactive and responsible student (manipulation of powders).
• Good communication skills, English preferred.
• Ability to program (C++, LabVIEW, python…).
Environment:
60% experimental work (encoding, use of the HSLC machine), 20% analysis, 20% writing, documentation and presentation. Mostly on site (Technopark).
High-Speed Laser Cladding (HSLC) is a direct metal deposition (DMD) technique derived from Laser Cladding (LC). In LC, a laser creates a melt-pool on the substrate in which metallic powder is delivered by a carrier gas and melted. In HSLC, the powder stream focus is slightly above the substrate, and most of the laser power is delivered to the powder in flight, allowing for a smaller melt-pool and higher deposition speeds. The accuracy and control of the powder stream (shape, density, flow) is crucial for high-quality and repeatable depositions. It is controlled by the architecture (hoses length, powder splits…) and various process parameters (gas flow, powder hopper rotational speeds…).
Qualifications:
• Intrinsic motivation and willingness to perform experimental work.
• Proactive and responsible student (manipulation of powders).
• Good communication skills, English preferred.
• Ability to program (C++, LabVIEW, python…).
Environment:
60% experimental work (encoding, use of the HSLC machine), 20% analysis, 20% writing, documentation and presentation. Mostly on site (Technopark).
The aim of this thesis is to implement a robust powder management system. The powder caustics will be characterized (flow, density, pulsations), and the architecture and parameters will be optimized to achieve the stability and quality of the powder stream. In a research environment, the candidate will be trained on the machine, with a possibility to use his own results to optimize the clad of coatings.
The aim of this thesis is to implement a robust powder management system. The powder caustics will be characterized (flow, density, pulsations), and the architecture and parameters will be optimized to achieve the stability and quality of the powder stream. In a research environment, the candidate will be trained on the machine, with a possibility to use his own results to optimize the clad of coatings.
Please, send your CV, motivation letter and transcript of records in PDF format via email to:
Dr. Noémie Martin, nmartin@ethz.ch
Francesco Rippa, francesco.rippa@inspire.ch.
Please, send your CV, motivation letter and transcript of records in PDF format via email to: