Reflectivity of anodised Al-Si alloy surface of belt pulleys used in combustion engines

• Autorzy: Labisz Krzysztof

Identyfikatory

DOI

10.20858/sjsutst.2021.112.7.10

• Języki publikacji: EN

Abstrakty

EN

The recent trend of using aluminium alloys instead of steel has reached the transportation industry, where increasingly, more parts are made of aluminium. An example is the belt pulley, applied for combustion engines for energy transmission. This part should be strong, durable, and lightweight. Aluminium-silicon alloys are a good choice, moreover, even when the surface is anodised, also because of their moderate inertia control and excellent wear characteristic during mechanical operations. Since aluminium is lightweight yet mechanically durable and anodised, it is an ideal belt pulley to use, especially in high-temperature operations. However, the main question is what type of Al-Si alloy, casting method and anodisation method should be used in terms of energy adsorption, having long-term properties for a lifetime, has to be applied. For this reason, this paper presents the influence of the chemical composition, casting method and anodising parameters on the structure and thickness of the anodic layer produced on aluminium alloys, as well as on the albedo value as an ability to reflect or absorb light. The aluminium alloys, AlSi12Cu1 and AlSi9Cu3, were used as research materials, obtained using different casting methods. The goal of this work was to determine the optimal combination of the anodisation conditions and materials for maximising the reflectivity factor of the surface, as a very important factor, determining the energy amount absorbed by an anodised surface. For further improvement of these surface properties as well as for enhancement of the properties and strengthen the material produced with different aluminium alloys production methods, different alloying additives were added. In addition, the mechanical properties of the surface layer were measured, where a remarkable hardness increase was obtained, and the best combination in form of AlSi12Cu1 high pressure cast was found with the highest albedo factor among all tested surface variants.

Słowa kluczowe

EN

aluminium; reflectivity; adonisation; surface treatment; sand cast; high pressure cast; albedo

PL

aluminium; refleksyjność; adonizacja; obróbka powierzchni; odlew piaskowy; odlew wysokociśnieniowy; albedo

• Wydawca: Wydawnictwo Politechniki Śląskiej
• Czasopismo: Zeszyty Naukowe. Transport / Politechnika Śląska
• Rocznik: 2021
• Tom: z. 112
• Strony: 125--133
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Labisz Krzysztof

• Faculty of Transport and Aviation Engineering, The Silesian University of Technology, Krasińskiego 8 Street, 40-019 Katowice, Poland

• https://orcid.org/0000-0002-4613-830X

Bibliografia

• 1. Nickel Daniela, Dagmar Dietrich, Roy Morgenstern, Ingolf Scharf, Harry Podlesak, Thomas Lampke1. 2016. “Anodisation of Aluminium Alloys by Micro-Capillary Technique as a Tool for Reliable, Cost-Efficient, and Quick Process Parameter Determination”. Advances in Materials Science and Engineering Article ID 1374897: 1-12. DOI: http://dx.doi.org/10.1155/2016/1374897.
• 2. University of Calgary. „Energy education”. Available at: https://energyeducation.ca/encyclopedia/Albedo.
• 3. HyperPhysics. “Albedo of the Earth”. Available at: http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/albedo.html.
• 4. Gombar M., L. Sobotova, M. Badida, J. Kmec. 2014. “The comparison of possibilities at using of different electrolytes in the process of anodizing aluminium”. Metalurgija 53(1): 47-50.
• 5. Curioni Michele, Tito Gionfini, Antonello Vicenzo, P. Skeldon, G. E. Thompson. 2013. “Optimization of anodizing cycles for enhanced performance”. Surface and Interface Analysis 45(10): 1485-1489.
• 6. Yılmaza Demet, Ayşe Bayrakçeken, Yurtcanbc Tuba, Öznülüer Özercd, Fulya Memioğlub. 2021. “Albedo parameters and effective atomic numbers of PEDOT/Carbon black composites”. Radiation Physics and Chemistry 182: 109378.
• 7. Jiang Tao, Chong Ji, Xin Wang, Ying Liu, Fuyin Gao, Yuxiang Sun, Kun Zhang, Lei Meng. 2021. “Experimental investigation on the damage effect of 6063-T5 aluminum alloy circular tubes subjected to blast after exposure to fire”. Thin-Walled Structures 159: 107290.
• 8. Ahmetab Turşucu. 2021. “Albedo factor determination of some selected 3d alloy samples”. Applied Radiation and Isotopes 169: 109505.
• 9. Petrič M., J. Medved, P. Mrvar. 2011. “Effect of grain refinement and modification of eutectic phase on shrinkage of AlSi9Cu3 alloy”. Metalurgija 50(2): 127-131.