Daido Bunseki Research Inc.

Chemical Composition & Environmental Analysis
Structural Analysis/Shape Observation
Physical Property Measurement
Fracture, fatigue, and degradation
Foreign matter, discoloration, surface property
Corrosion, corrosion prevention
Analysis Examples
Foreign matter, discoloration, surface property
Analysis & Testing Examples: Physical Analysis: C-02--Examination of the cause of gear surface rusting--

1. Examination materials
 Rust is produced during the gear manufacturing process.

 A relationship with the cleaning solution used during this process was examined.

Examination materials

2. Cleaner components
 The cleaning solution was concentrated and analyzed via transmission technique with the FT-IR microscope.
Cleaner components

3. Analysis of the gear's rusted portion

Analysis of the gear's rusted portion

4. Results
 The location of all infrared absorption bands for organic material in the rusted gear portions (tooth tips, side surfaces) were matched up with infrared absorption bands of the cleaning solution.
 Inorganic parts were analyzed with energy dispersive X-ray analysis, and the same elements were detected.
Daido Bunseki Research, Inc. 2-30 Daido-cho, Minami-ku, Nagoya 457-8545 Phone: 052-611-9434 Fax: 052-611-9948