Development of Pb alloy overlay for high rotational gasoline engines |
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| Institution: | 1. School of Materials Engineering, Purdue University, West Lafayette IN, 47906, USA;2. School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, USA;1. Institute of animal breeding and genetics, University of Veterinary sciences Vienna, Vienna, Austria;2. Department of Animal Husbandry, Slovak University of Agriculture in Nitra, Nitra, Slovakia;3. GABI, INRAE, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France;4. Pôle Développement Innovation Recherche, IFCE, Gouffern en Auge, France |
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| Abstract: | Rotation speed of some engines is increasing to achieve higher performance. Therefore, engine bearings will be used at higher temperature due to higher rotation. When bearings are operated at higher temperature, the overlay gives different damage from conventional damage mode. This is overlay peeling caused by melting of a low melting point compound near the Ni interlayer. Therefore, a new overlay was developed to form no low melting point compounds. The new overlay consists of Pb, Sn, In and Cu. Addition of Cu suppresses diffusion of Sn and In to inhibit the formation of low melting point compounds. |
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