Hello.
I am trying to find metals/alloys apart from titanium which are not harmful for the jet engine cooling systems. I know that jet engine lubrication oils are usually "neopentyl plyol esters", but I have not been able to find any information on materials apart from titanium that can withstand such lubrication oils. Any book or article sources that gives information will be helpful. I have not been able to find much information probably because my background is in mechanical/aeronautical engineering and the searches are limited to general terminology. In addition to this, my current project is fairly interdisclipinary and requires intermediate to advanced knowledge of chemistry.
When I was in the gas turbine industry, the bearings were still largely steel -- the balls were definitely steel -- so steel is likely to be safe with these oils.
Hello Mr Ishan, You will have to specify the material and then search for compatible lubrication oil that are non corrosive for that material. Usually the material used is steel alloyed with molybdenum, Magnesium, copper aluminium etc, in many bearings. I have worked with OX-27 oil on APU engines, which have to be drained for engine preservation, and we use OM-11 as the preservative oil. If you see bearings used in aerospace applications, many bearings are made from vacuum-melt 52100 or VIM-VAR M-50 steel and are normally manufactured to ANSI/ABMA
tolerance class 5 (ISO class 5), with high-strength machined
cages. You can refer NASA TM 102529 on steel bearings used in aerospace applications. Hope this information is useful.
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