Innovative bond strength testing of tin-based alloys for sliding bearings on steel supports
| Autor: | Okan Akin, Kenan Sürül, Paul Beiss |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Materials Testing. 63:501-504 |
| ISSN: | 2195-8572 0025-5300 |
| DOI: | 10.1515/mt-2020-0083 |
| Popis: | Since the bonding strength of Babbit alloys to their steel support cannot be measured with Chalmers specimens according to DIN ISO 4386, part 2, if the layer is too thin, an alternative specimen constellation was developed which enables the measurement of the bonding strength of layers as thin as 0.5 mm. The new specimen geometry consists of two coaxially aligned steel cylinders of equal diameter which leave a gap between opposite faces. After pretreatment in a metallic immersion bath of tin or an alloy of tin with 50 wt.-% zinc, the Babbit alloy is poured into the gap. Then the bonded steel cylinders are tensile tested. The force at fracture is divided by the cylinder cross-section yielding the bonding strength. This configuration is termed the face tensile specimen and was successfully tested on three different Babbit alloys. Up to a layer thickness of 1.5 mm the face tensile specimen delivers bonding strength quite comparable to those achieved with Chalmers specimens. Face tensile specimens require less Babbit alloy and are less costly to manufacture. |
| Databáze: | OpenAIRE |
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