PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

PaintSquare


Coatings Industry News

Main News Page


Ancient Organs Focus of Corrosion Study

Friday, March 15, 2013

Comment | More

An organ-playing chemist has found a way to combine her passions for music and science by studying corrosion in centuries-old organ pipes.

Ancient organ pipes throughout Europe are suffering corrosion damage—so much so that some instruments can no longer produce sound.

One chemistry professor, who also happens to be an avid organist, set out to determine the cause.

Stellwagen organ
Photos: Ibo Ortgies, Göteborg Organ Art Center, Sweden

A professor from Oberlin College was awarded a major grant to study corrosion in organ pipes.

Half Million for Organ Research

Catherine Oertel, assistant professor of chemistry and biochemistry at Oberlin College & Conservatory in Ohio, received a five-year grant of nearly $475,000 to study the corrosion of historic Baroque organ pipes using laboratory exposure experiments.

Supported by the grant, awarded in 2012, undergraduate researchers collaborated with Oertel to analyze authentic pipe samples and the synthesis of corrosion products and related compounds.

Catherine Oertel

Dr. Catherine Oertel's work combines chemisty and materials science. Her focus: corrosion in centuries-old organs.

The funding is from the National Science Foundation's Faculty Early Career Development Program (CAREER), which grants money to teacher-scholars who integrate research and education into their work.

"My research brings something new to the chemistry department because there's an emphasis on materials research, which is at the interface of chemistry and engineering," Oertel said after she was awarded the grant.

"This work is different than pure chemistry. There's a growing interest among Oberlin students to engage in multidisciplinary study."

Oertel joined the Oberlin chemistry and biochemistry faculty in 2006. She holds a Ph.D. from Cornell University.

Tin vs. Lead

As an undergraduate at Oberlin, she became fascinated with organs after listening to recitals at the school and later decided take organ lessons for fun. She became fascinated by the way the centuries-old organ pipes were corroding and was later awarded a National Science Foundation Discovery Corps fellowship to work with a corrosion chemistry group at the Göteborg Organ Art Center (GOArt) in Sweden.

At GOArt, organ builders and scientists at the Chalmers University of Technology collaborate on researching compositions, physical properties, and corrosion of organ pipe metal.

Oberlin pipe corrosion research

A pipe from a 1637 organ shows major corrosion damage. Some researchers believe that tin additives in lead pipes helped protect them from corrosion.

In her research, Oertel noted that organ pipes have a variety of lead-tin alloy compositions, ranging from pure lead to pure tin, and atmospheric corrosion from acetic acid and other woods acids has been a major cause of deterioration.

Field studies previously conducted by the European Commission-funded Corrosion Of Lead and Lead-tin Alloys of organ PipeS in Europe (COLLAPSE) led some researchers to believe that lead pipes gained some corrosion protection from tin additives.

Corrosion Layer Analysis

Oertel and her team decided to test this tin theory, setting up a series of laboratory exposure experiments and analyzing the resulting corrosion layers.

The researchers placed small samples of lead alloyed with as much as 15 percent tin in glass canisters and let the samples sit in acetic acid fumes for up to a month. Some of the canisters were set at 60 percent humidity and others at 95 percent.

Lead-tin samples showed dramatically less corrosion than pure lead ones at low humidity, Oertel's research found. At high humidity, the lead-tin squares were covered in clusters of corrosion.

After performing X-ray analysis, the team found that the presence of tin particles actually lost its protective ability when exposed to high-moisture conditions.

Since organ caretakers often use humidifiers to keep the instrument's wood from cracking, the humidity issue is important to understand, Oertel said.

While in Germany last summer, Oertel had the opportunity to play an organ from the 1600s, she told The Plain Dealer.

"In Germany in the 1600s and 1700s, there would have been hundreds of organs like this," said Oertel. But now, "these organs are the endangered species of the musical world."

The research, which Oertel described as "a deeply satisfying project," is ongoing and will look at other combinations of metals that are at risk for corrosion.

   

Tagged categories: Corrosion; Corrosion protection; Laboratory testing; Lead; Research

Comment from Aimee Beggs, (3/15/2013, 9:35 AM)

These historic organs deserve protection. Great efforts have been made in the last 40 years to save as much of the original pipework as possible and to restore and rebuild instruments and pipework that suffered "modernization" in the late 19th-early 20th century. Old pipework and completely mechanical action result in an exceptionally articulate "speech" that later instruments cannot duplicate. No surprise that an "Obie" (Oberlin grad) is involved in this interesting research project!


Comment from Tom Schwerdt, (3/18/2013, 10:00 AM)

Unfortunate that the conditioning used to preserve the wood tends to be destructive for the metalwork. Any chance some type of penetrating oil could be used on the woodwork (would have to be all surfaces) instead of raising the humidity?


Comment Join the Conversation:

Sign in to our community to add your comments.

Advertisements
 
CHLOR*RID International Inc.
 
SOLUTIONS THAT WORK
 
Companies that invest in corrosion control use CHLOR RID products
  • Soluble salt removal liquid
  • Test kits to verify contamination levels
  • Surface passivation to hold the blast
INFO@CHLOR-RID.COM 800.422.3217
 

 
SAFE Systems, Inc.
 
SAFE Systems'
Blast Lights &
Deadman Switches
 
Halogen or LED blast lights available with our NEW urethane bumper. Switches available in many colors for color coding your hoses.
 

 
Industrial Vacuum Equipment Corp.
 
Hurricane Vacuums
& Dust Collectors
 
Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com
 

 
SABRE Autonomous Solutions
 
Safety
 
Removing blasting operators from harmful environments is our key objective.
 

 
Tnemec Company, Inc.
 
Online Coating Courses from Tnemec
 
For decades, Tnemec has offered its expertise to clients presenting face-to-face coatings courses. Now, these presentations are available to anyone for CEUs at Tnemec University.
 

 
Termarust Technologies
 
Termarust (HR CSA) Chemically Stops
Active Corrosion
 
Arch truss treated with Termarust's (HR CSA) in 2003. This steel arch bridge is rust free on all surfaces including the crevice corroded joints and connections.
 

 
KTA-Tator, Inc. - Corporate Office
 
KTA-TATOR LABORATORY SERVICES
 
• Coating failure analysis
• Independent testing
• Accelerated weathering testing
• Abrasives Testing
• Oil & Gas Material Qualification
• A2LA Accredited
Contact: Rob Leggat at
412-788-1300 x180
 

 
PPG Protective and Marine Coatings Group
 
We Protect and Beautify the World
 
PPG is widely recognized as a world leader in protective and marine coatings, developing innovative, cutting-edge products and services.
 

 
Monti Tools, Inc.
 
BRISTLE BLASTER® – THE ORIGINAL ONE
 
  • Abrasive blast with a power tool
  • Remove corrosion, mill scale and coatings
  • Cleans & roughens
  • Meets SSPC-SP 10 / NACE No. 2
  • Profile up to 4.7 mils
  • ATEX Zone 1
  •  

     
    Strategic Materials Inc.
     
    Crushed Glass Abrasives
     
    TruAbrasives™, a clean crushed glass abrasive superior to other abrasives for performance, health, and environmental benefits.
     

     
     
     

    Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

    TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


    The Technology Publishing Network

    Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

     
    EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
    REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
    MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us