Generation of Ammonia during Wear Processes in Adhesive Wear of Titanium
| Autor: | Alan Hase, Hiroshi Mishina, Kentaro Chiba |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
generation of ammonia Physics QC1-999 adhesive wear Metallurgy wear elements chemistry.chemical_element chemisorption Engineering (General). Civil engineering (General) Surfaces Coatings and Films Chemistry Ammonia chemistry.chemical_compound chemistry Chemisorption TJ1-1570 Nitrogen fixation Adhesive wear titanium Mechanical engineering and machinery TA1-2040 Total pressure QD1-999 Titanium |
| Zdroj: | Tribology Online, Vol 10, Iss 2, Pp 201-206 (2015) |
| ISSN: | 1881-2198 |
| DOI: | 10.2474/trol.10.201 |
| Popis: | We report a short note of preliminary and new experimental results that the generation of ammonia (i.e. nitrogen fixation) can occur on tribologically activated surfaces formed as a result of the frictional sliding of pure titanium when this is performed in a mixed gaseous environment of dinitrogen and dihydrogen at a total pressure of 6 × 10-4 Pa. Gaseous ammonia, synthesized at the tribologically activated surface on the actual area of contact and/or on fine debris of wear elements with a size of the order of ten or a few tens of nanometers, was detected by analyzing the partial pressures for each species between amu 1 and amu 50 present in the environmental gases during the sliding friction: this analysis was performed using a quadrupole mass spectrometer (QMS). This process, however, depends on the mode of wear, i.e. it is expected to occur only under mild conditions of wear. |
| Databáze: | OpenAIRE |
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