To allow more consistent metallographic section preparation of very small targets, MEE has added a Leica EM/TXP to our selection of sectioning tools. The Leica EM/TXP is specifically designed for more precise and efficient targeting of points of interest in very small specimens. A combination mill/grinder/polisher and stereomicroscope, the Leica EM/TXP, allows the technician to observe the sample during preparation improving accuracy in locating microscopic targets.

MEE just added a new potentiostat/galvanostat instrument to our busy corrosion laboratory. The VersaSTAT 4 is an advanced and versatile instrument expanding on our electrochemical corrosion testing capabilities.

Electrochemical corrosion experiments can provide a variety of data related to the pitting, crevice corrosion, and passivation behavior for specific sample/solution combinations. These data are useful in selecting materials and/or determining how manufacturing processes affect corrosion properties.

Corrosion Testing

Corrosion Testing Lab Set-up

Read more about corrosion testing on our website and in our online Handbook of Analytical Methods for Materials.  Or you may call and talk to one of our technical staff for typical applications and sample requirements.

Materials Characterization Seminar

posted February 2018

Neal Hanke, P.E.

Dieter Scholz

Senior Scientist, Dieter Scholz and Materials Engineer, Neal Hanke will be speaking at the Minnesota chapter of ASM 2018 seminar in Brooklyn Park, MN on February 28. The Materials Characterization Seminar is an opportunity to learn about the most recent developments in advanced characterization techniques and their practical applications.

Dieter will be speaking on Broad Beam Ion Milling in Sample Preparation and Neal’s presentation is on the Determination of Nitinol Transformation Temperatures by the Bend and Free Recovery Method.

We weren’t familiar with the Minneapolis city flag until just recently, but were pleasantly surprised to see one of the symbols on it is a microscope. That seems fitting to us! Microscopes are one of the most important tools we use at MEE to provide our clients in the medical device, industrial and electronics industries with high-quality materials characterization for their advanced materials and critical components.

MEE has three scanning electron microscopes (and a new one coming this summer) and a light microscopy laboratory equipped with a variety of light microscopes with magnifications ranging from 5X to 2,400X.

There is a small contingent of Minneapolis citizens advocating for an update of the flag. We would hate to see the microscope image go away but either way, MEE will always be flying the microscopy banner.

 

City of Minneapolis Flag

Journal of Failure Analysis and Prevention

Alkaline Carbonate SCC Failures at a Refinery, co-written by MEE staff engineers, Ryan Haase and Larry Hanke was recently published in the Journal of Failure Analysis and Prevention ( First Online: January 16, 2018)

A metallurgical evaluation was performed to investigate two failures from carbonate-containing sour water service at a refinery. The paper details the visual, SEM/EDS, metallographic, and microhardness evaluations used to determine the failure mechanism for each refinery component.

 

 

 

 

 

Failure Analysis

posted January 2018

“The greatest teacher, failure is.”
Yoda

Wind Generator Blade Failure

This line from the latest Star Wars movie caught our ear. Any product failure can have serious consequences – from financial loss and/or personal safety perspectives. The expertise of the MEE engineering and technical staff encompasses a fundamental understanding of material behavior and a broad range of experience with different materials and types of failure. Paired with our technical expertise in failure analysis is an understanding that there is often an underlying root cause of failure that may be of greater importance to mitigating or preventing similar failures or improving a product’s future performance.

There is a lot to be learned from failure. MEE is your partner in the determination of the cause of a failure to minimize future risk.

Filed under: failure analysis,

Nanostructures Imaging

posted January 2018

These images are of a selective area of AlGaN (aluminum gallium nitride) nanostructures on graphene. Images were captured using the Field Emission Scanning Electron Microscope, FESEM, at MEE in support of a project partnership between CrayoNano AS of Norway and Agnitron Technology of Eden Prairie, MN USA.

AlGaN Nanostructure

AlGaN Nanostructure

AlGaN Nanostructure

The FESEM is an advanced microscope offering increased magnification and the ability to observe very fine features at a lower voltage than the SEM found in most laboratories.  Just as important as having the right tools for the job is having an experienced operator who can use the microscope to reveal the best images. Kudos to Kurt Schenk, MEE Laboratory Manager, for his work on this fascinating project.

Medical Device and Manufacturing

posted October 2017
MEE CEO, Larry Hanke, at previous MD&M event

MEE CEO, Larry Hanke, at previous MD&M event

 

Medical device development calls for innovation, precision and critical thinking – MEE matches your requirements with advanced materials characterization, analytical methods and experienced and informed materials strategies.

Look for us in the exhibit hall of the upcoming MD&M event November 8-9 at the Minneapolis Convention Center.  Materials Evaluation and Engineering staff will be there to meet and greet and answer any questions you might have about our services.

We will be at Booth #1304 (first booth if you enter through the central doors of the exhibit hall.)

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