Dude
Interesting?
Xrf of lubricating oil after use
Gives info about engine condition before and after?
Only have leftover new oil at the moment?
Can still check for additives like zinc though
?Will??keep some used one next time
Taray
On Sunday, December 6, 2020, 1:20 PM, Dude <dfemer@...> wrote:
XRF has been used to look
at metal in engine oil, give that a try.
Dud
?
?
Dude
Yes I was expecting that ha ha
Could have done a longer scan but I was running out of time
yesterday.
I acquired a cartoon of
my car disposable parts goodies??late yesterday.
They consist of used
brake pads ,fan belt??plus tensioner and the
timing belt assembly.
The timing belt
components are belt and multiple pulleys.Changing timing belt means replacing
the the whole assembly .
After noting the xrf
results,I was doing some investigative xrf of the other components??to explain my findings.
The metal??pulleys???also had iron and zinc.
Also checked out
sometimes zinc is added to the oil used to lubricate certain timing belt
systems.
Initially thought there
was some contamination from nearby structures.
But this was ruled out
Car mechanics is very
confusing too me especially when it comes to tensioners and lubricant oils on
the timing belt.
Preliminary impression
was the zinc and iron could have rubbed??off on the??old timing belt and got
impregnated as silly as it may sound.
After I took a closer
look at the timing belt ,the pieces of the puzzle started to fit.
I have some other??parts to xrf next time
like the used???belt pulleys,brake
pads??and tensioners which are very metallic
indeed.
Here is longer scan of
the timing belt
Taray
?
On Sunday,
December 6, 2020, 6:26 AM, Dude <dfemer@...> wrote:
You ID¡¯d only the very strongest peak and
at only 7 total counts some would argue that is insufficient to make a claim
considering close ?overlap and confirming with secondary peaks . What
about the more subtle peaks that are going to take a much longer time to
develop? Use longer count times and find out what you¡¯re missing or not.
Dud
?
?
?
HI guys
Before doing this xrf .I knew little about timing belts and how they actually
function.
I thought made of just plain rubber or something like that until my car timing
belt almost snapped on the freeway weeks ago.
Replaced a new one together with the full timing belt kit.
Kept the old stuff for xrf.
Xrf was pretty short because? the peaks were appearing and therefore I
decided no need for a longer scan.
Xrf with Am 241 show iron and zinc peaks.
On further reading noted that these belts are made of rubber reinforced with
fibreglass,steel or neoprene.
Most likely the iron is in the cords and zinc as neoprene in the rubber
Pics are for a section of the timing belt exposing the cords and mca .
Thanks
Taray
