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Alusil
Alusil as a hypereutectic aluminium-silicon alloy (AlSi17Cu4Mg) contains approximately 70% aluminium and 30% silicon.<ref name=KSPG-AG>Template:Citation/core{{#if:|}}</ref><ref name=finishing.com>Template:Citation/core{{#if:|}}</ref> This alloy was created in 1927 by Schweizer & Fehrenbach<ref name=Rheinmetall>Template:Citation/core{{#if:|}}</ref> of Baden-Baden Germany and further developed by Kolbenschmidt.<ref name=finishing.com/>
The Alusil aluminium alloy is commonly used to make linerless aluminium alloy engine blocks.<ref>Template:Citation/core{{#if:|}}</ref> Alusil, when etched, will expose a very hard silicon precipitate. The silicon surface is porous enough to hold oil, and is an excellent bearing surface. BMW switched from Nikasil-coated cylinder walls to Alusil in 1996 to eliminate the corrosion problems caused through the use of petrol/gasoline containing sulfur.
Engines using Alusil include:
- Audi 2.4 V6<ref name=KSPG-AG/><ref name=KS_A6>Template:Citation/core{{#if:|}}</ref>
- Audi 3.2 FSI V6<ref name=KS_A6/>
- Audi 4.2 FSI V8<ref name=KSPG-AG/><ref name=Rheinmetall/>
- Audi 5.2 FSI V10
- Audi/Volkswagen 6.0 W12
- BMW N52 I6
- BMW M62 V8
- BMW N62 V8
- BMW V12<ref>Template:Citation/core{{#if:|}}</ref>
- Porsche 928 V8
- Porsche 924S I4
- Porsche 944 I4
- Porsche 968 I4
- Porsche Cayenne V8<ref name=Rheinmetall/>
See also
External links
- Kolbenschmidt Pierburg - official website of Alusil trademark holder
