Proceedings of SerbiaTrib '13

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[22] K.K. Alaneme: Fracture toughness (K 1C ) evaluationfor dual phase low alloy steels using circumferentialnotched tensile (CNT) specimens, MaterialsResearch, Vol. 14, No. 2, pp. 155-160, 2011.[23] G.E. Dieter: Mechanical Metallurgy, McGraw-Hill, Singapore; 1988.[24] S.K. Nath, U.K. Das: Effect of microstructure andnotches on the fracture toughness of mediumcarbon steel, Journal of Naval Architecture andMarine Engineering, Vol. 3, pp. 15-22, 2006.[25] B.F. Schultz, J.B. Ferguson, P.K. Rohatgi:Microstructure and hardness of Al 2 O 3nanoparticle reinforced Al–Mg compositesfabricated by reactive wetting and stir mixing,Materials Science and Engineering A, Vol. 530,pp. 87-97, 2011.[26] M. Kok: Production and mechanical properties ofAl 2 O 3 particle reinforced 2024 aluminiumcomposites, Journal of Materials ProcessingTechnology, Vol. 16, pp. 381-387, 2005.[27] K.K. Alaneme KK, A.O. Aluko: FractureToughness (K1C) and Tensile Properties of As-Cast and Age-Hardened Aluminium (6063) –Silicon Carbide Particulate Composites, ScientiaIranica, Transactions A: Civil Engineering(Elsevier), Vol. 19, No. 4, pp. 992-996, 2012.[28] N. Chawla, Y. Shen: Mechanical behaviour ofparticle reinforced metal matrix composites,Advanced Engineering Materials, Vol. 3, No. 6,pp. 357-370, 2001.[29] M.T. Milan, P. Bowen: Tensile and fracturetoughness properties of SiCp reinforced Al alloys:Effects of particle size, particle volume fractionand matrix strength, Journal of MaterialsEngineering and Performance, Vol. 13, No. 6, pp.775-783, 2004.[30] M.M. Ranjbaran: Low fracture toughness in Al7191-20% SiCp aluminium matrix composite,European Journal of Scientific Research, Vol. 41,No. 2, pp. 261-272, 2010.[31] K.K. Alaneme: Mechanical Behaviour of ColdDeformed and Solution Heat-treated AluminaReinforced AA 6063 Composites, The West IndianJournal of Engineering, Vol. 35, No. 2, pp. 31-35,2013.[32] Fracture Mechanics of Ceramics, Vol. 13 – Crack-Microstructure Interaction, R – Curve Behaviour,Editors (Bradt RC, Munz D, Sakai M,Schevchenko V Ya, White KW, Springer, FirstEdition, pp. 538, 2002.168 13 th International Conference on Tribology – Serbiatrib’13
Serbian TribologySocietySERBIATRIB ‘1313 th International Conference onTribologyKragujevac, Serbia, 15 – 17 May 2013Faculty of Engineeringin KragujevacTRIBOLOGICAL PROPERTIES OF NANOMETRIC ATOMICLAYER DEPOSITIONS APPLIED ON AISI 420 STAINLESSSTEELE. Marin 1 , A.Lanzutti 1 ,L.Fedrizzi 11 University of Udine, Department of Chemistry, Physics and Environment, Via del Cotonificio 108, 33100 Udine Italy,elia.marin@uniud.itAbstract: Atomic Layer Deposition (ALD) is a modern technique that allows to deposit nanometric,conformal coatings on almost any kind of substrate, from plastics to ceramic, metals or even composites.ALD coatings are not dependent on the morphology of the substrate and are only regulated by thecomposition of the precursors, the chamber temperature and the number of cycles.In this work, mono- and bi-layer nanometric, protective low-temperature ALD coatings, based on Al2O3 andTiO2, were applied on AISI 420 Stainless Steel in order to enhance its relatively low corrosion resistance inchloride containing environments. Tribological testing were also performed on the ALD coated AISI 420 inorder to evaluate the wear and scratch resistance of these nanometric layers and thus evaluate theirdurability.Scratch tests were performed using a standard Rockwell C indenter, under a variable load condition, inorder to evaluate the critical loading condition for each coating. Wear testing were performed using astainless steel counterpart, in ball-on-disc configuration, in order to measure the friction coefficient and toconfront the wear resistance. All scratch tests scars and wear tracks were then observed by means ofScanning Electron Microscopy (SEM) in order to understand the wear mechanisms that occurred on thesample surfaces.Corrosion testing, performed under immersion in 0.2 M NaCl solutions, clearly showed that the ALDcoatings have a strong effect in protecting the Stainless Steel substrate against corrosion, reducing thecorrosion current density by two orders of magnitude.The preliminary tribological results showed that ALD depositions obtained at low temperatures have abrittle behavior caused by the amorphous nature of their structure, and thus undergo delaminationphenomena during Scratch Testing at relatively low applied loads. During ball-on-disc testing, the coatingswere removed from the substrate, in particular for monolayer ALD configurations, which seem to have alower toughness when compared to bi-layer configurations..Keywords: Atomic Layer Deposition, Al 2 O 3 , TiO 2 , wear, AISI 420, Stainless Steel, Scratch Test, Ball-on-disc1. INTRODUCTIONMartensitic stainless steels are widely used for awide range of applications, mainly due to theirbalanced properties, as they couple relativelymicrohardness, mechanical resistance and corrosionresistance in many aggressive environments [1].For these reasons, martensitic stainless steels arenowadays applied for: knife blades [2], oil and gas[3], offshore platforms [4], turbine blades [5],components subject to abrasive wear at relativelyhigh temperature or aggressive environments [6].Even so, stainless steels could show insufficientcorrosion resistance in strongly aggressive mediacontaining Cl - and S 2- ions, at high temperature orvery high / low pH values [7]. For these reasons, inparticular circumstances Stainless Steels may needa further improvement of corrosion protection.Conventional treatments, such as painting, are13 th International Conference on Tribology – Serbiatrib’13 169
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SerbianTribologySocietyFacultyofEng
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Serbian Tribology SocietyUniversity
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Supported byMinistry of Education,
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PrefaceThe International Conference
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ContentsPlenary Lectures1. THE GREE
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27. WEAR CHARACTERISTICS OF HYBRID
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Tribometry57. PRELIMINARY STUDY ON
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Plenary Lectures13 th International
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Serbian TribologySocietySERBIATRIB
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Figure 4. Diagram of the height and
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Realization of the approach is base
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edge without chamfer and smaller ra
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Figure 7. Accumulated tool life in
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Figure 13. Calculated and measured
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Friction deformation of the bronze
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engine cylinders of 2-cylinder-twot
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Table 1: Chemical composition of sa
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Table 4: Comparative wear-resistanc
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- measuring of coating thickness h
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Figure 5. Functional scheme of the
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Table 2. Test results for massive w
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knowledge transfer in the field ofm
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Table 1. Parameters of the electroc
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Figure 6. Wear resistance by linear
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coatings and observed their good we
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c)a)Figure 2: SEM images and micros
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Room temperature 300°CNi/µSiCNiNi
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COF [-] COF [-]Fig.9: COF graphs at
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about 260 nm is related to isolated
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contact’s conformity [18] they ob
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In order to calculate the metallic
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microscopic inspection of the Rp3 s
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otating plate. The shaft passes thr
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similar trends of variation are obs
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smooth, gear fiber-mild steel rough
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[2] Tabor, D.: “Friction and wear
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(10, 50 and 100 N) against surface
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[9] B.R. Gligorijevic, A. Vencl, B.
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dielectric properties, high resista
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parameter, Sv, was slightly influen
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dependence of roughness height and
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Polyethylenes with a molecular weig
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[9] K.S. Kanaga Karuppiah, A.L. Bru
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MgCO3•CaCO3 (13% Mg), and carnall
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fully compatible with MRI/MSCT imag
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5. CONCLUSIONThe magnesium alloys a
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Zinc dialkyldithiophosphate (ZDDP)
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C- Lower deposits with NPNA on comb
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films. Carraro et al. [10] examined
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PlateCount No.Critical Load ( N)120
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solid melt of ZA27 alloy using mech
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SiC particles are uniformly distrib
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in number of micro-cracks and clust
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PBT has the average values of the f
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Page 135 and 136: 3. EXPERIMENTAL RESULTSTaking into
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Page 139 and 140: 2. EXPERIMENTALTESTING2.1 MaterialT
Page 141 and 142: figure 3a it could be seen that the
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Page 147 and 148: 5. CONCLUSIONFigure 11. The accumul
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Page 163 and 164: tg( ) tg 100, [%] (2)tgwhere are:
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Page 169 and 170: electrostatics [17]. Due to the fle
Page 171 and 172: 250nm size have been observed, acco
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Page 175 and 176: comparison with the synthetic reinf
Page 177 and 178: 3. RESULTS AND DISCUSSION3.1 Micros
Page 179 and 180: (a)(b)Figure 4. Showing (a) variati
Page 181: composites. But the composite compo
Page 185 and 186: coated and uncoated region after ad
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Page 189 and 190: Fig. 9 shows the wear track obtaine
Page 193 and 194: Mica samples preparationFor the ads
Page 195 and 196: According to the AFM results in fig
Page 197 and 198: [21] B. G. Sharma et al.: Character
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Page 203 and 204: Table 3. Friction coefficients of s
Page 205: A.K.Oleynik, V.M.Matsevity, ea.]. /
Page 211 and 212: Most of the friction units of produ
Page 213 and 214: In order to provide both high parts
Page 215 and 216: Fig. 3. The comparison the criterio
Page 217 and 218: Table 3. Experimental and calculate
Page 219 and 220: For developing the numerical model
Page 221 and 222: ,eccentricities and hydrodynamic pr
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[11]. Figure 5 shows s the influenc
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efficiency of use, product quality,
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38GSA. The chemical composition, de
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niobium. It should be noted that fo
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Figure 1. Friction force on side su
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exploitation this changing is signi
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2. EFFICIENCY OF CYCLO DRIVEEfficie
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Figure 6. Dependence of cyclo drive
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common for their ability to be inst
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FNF (11)R sin cos11 21 22FNF
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Normal force [N]4000350030002500200
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analytical tests. The analytical te
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Table 4. Results of zero samples of
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noticeable, and by the end of explo
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4. PLASTIC BEARING APPLICATIONSRega
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For Elastohydrodynamic film thickne
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The results concluded for different
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For Thrust Force of 40KNKrytox 215
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Krytox 215 (µ = 0.03204 Pa.s)Figur
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- Reliable exploitation tools, prim
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In addition, as a result of cyclic
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AcknowledgementThe part of this res
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Thepressure angle can be calculated
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mechanism these parameters are fina
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causes big changes of their propert
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Table 2. Impact toughness of some t
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Figure 1. Appearance of fractured f
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implementation of these new manugac
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additional energy is dissipated due
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The adopted geometry parameters are
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4. CONCLUSIONTools of virtual produ
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Figure 2. Structure of the machinin
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3. ANALYSIS OF RESULTSThe results o
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Figure 15. Surface roughness regard
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From the analysis of the diagram it
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comparison from economic, energy co
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Advantages and disadvantages of tra
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The information provided by footwea
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Force (N)5,554,543,532,521,510,50Ex
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additives, that had been, until rec
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Figure 1. Test results for samples
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Table 7. Test results of oil sample
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Input parameters- Current intensity
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edge formed into a thin line. At th
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Lower values of current are not res
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Table 1. Chemical composition of si
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flowable at high temperatures and v
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holes (pits) emerge in the shape of
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[4] W. Schatt, K-P. Wieters, Pulver
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assumption allows us to use, instea
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where P is the load, a - radius of
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determination (total running in tim
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μm, compared with Figure 17, wich
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Serbian TribologySocietySERBIIATRIB
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Especially when the chain transfer
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is obvious that this isa so-calledw
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winches. The authors are inclined t
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find parameters of robot laser hard
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each of which is measured by the le
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Fractal dimensions were determined
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Figure 3. Modified force acting sch
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0.25Lubricant: L3DC 04Friction coef
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nanocomposites. The influence of fi
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4. RESULTS AND DISCUSSION4.1 Morpho
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Figure 6. Loading and unloadin vers
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3 8 12 1 4 2 4
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The material after qualifying the r
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It has already been mentioned that
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Degradation & Stability, Vol. 69, N
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conformance to researchers’ requi
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This part is assembled of pneumatic
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matrixes describe the state of the
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values influence of themeasurement
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Figure 1. Friction stir weldinga -
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(t 2 t
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M fr / T [-] [-]10.90.80.70.60.50.4
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M fr / T [-]10.90.80.70.60.50.40.30
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experimentally determined that for
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4. DISCUSSIONAccording to the theor
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2.1 The life cycle of the reportThe
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Obviously the report is checked and
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uticaja na osnovu kompozita, a time
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5. ZAKLJUČCIStruktura tiksolivene
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dobijene različite karakteristike
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vizuelno, na dnevnoj svetlosti, pod
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LITERATURA[1] Зинченко В.
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Slika 1. Rotorni bager - glodar VII
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stvaraju sliku stanja i svoja zapa
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njihovih kotrljanih elemenata. Mere
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postupka i uticaja parametara depoz
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posledica različite raspodele mikr
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ZrO 2 Y 2 O 3 je takođe zbog oksid
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3.2 Pneumatska osetljivostOblast pr
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p mg (δ), koji je zbog malih struj
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PNEUMATIC PROBE HEAD SELECTION FOR
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1. Podsistem kopanja2. Podsistem pr
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Slika 3. Kriva habanjaNa tom dijagr
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Mjereni su parametri habanja i pril
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preše prevladavaju kombinirani uvj
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a) b)Slika 5. Karakteristična mikr
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varijantnih materijala u dostavnom
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Jovanović D. 414, 446KKaleicheva J
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CIP - Каталогизација
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