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Roliranje MoS[sub]2 nanocevk na površino titanove zlitine in orodnega jekla za zagotavljanje suhega mazanja : magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Borković, Denis
Spojina MoS2 se v obliki ploščic uporablja kot dodatek oljem in mastem ali kot suho mazivo. Učinkovitost mazanja je odvisna od orientacije ploščic in je največja, če so ploščice vzporedne s kontaktno ...površino. Idealne drsne razmere tako dobimo z uporabo nanocevk MoS2. V tem delu smo za namen suhega mazanja uporabili postopek roliranja. Uporabili smo vzorce iz orodnega jekla 100Cr6 in titanove zlitine Ti6Al4V, ki so bili obdelani na vhodni hrapavosti Rai = 0,4 %m in Rai = 1,6 %m. Na tako pripravljene površine vzorcev smo nanesli prevleko na osnovi PVA s primešanimi nanocevkami MoS2 in jo z roliranjem pri treh korakih 0.05, 0.15 ter 0.3 mm vrt-1 vtisnili v površino. Z meritvami trenja na tribometru z uporabo kroglice na disk smo dokazali, da se nanocevke MoS2 dejansko vtisnejo v površino titanove zlitine in orodnega jekla ter ohranjajo nizko trenje, tudi ko odstranimo polimerno prevleko. Z ramansko spektroskopijo smo obenem tudi dokazali, da signal PVA po odtopitvi prevleke na površini ni viden. Magistrska naloga torej prikazuje rešitev problema, kako nanocevke MoS2 trajno nanesti na površino, da tam tudi ostanejo med drsenjem kontaktih površin.
Type of material - master's thesis
; adult, serious
Publication and manufacture - Ljubljana : [D. Borković], 2015
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