Proceedings of SerbiaTrib '13

More documents

Recommendations

Info

Slika 6. SEM mikrofotografija površine prevlakeZrO 2 CeO 2 Y 2 O 3Na SEM mikrofotografiji je crvenom linijomzaokružena površina jedne istopljene i razlivenečestice praha. Potpuno istopljena čestica praha jeformirala tanak disk u sudaru sa površinomprethodno deponovanog sloja. Morfologijadeponovane čestice potvrđuje da su istopljenečestice u sudaru sa podlogom formirale pravilanoblik i kao takve ostvarile dobru vezu sa prethodnodeponovanim česticama. U poprečnom presekuprevlake deponovane čestice imaju lamelarnustrukturu.Image analiza ukupnog sadržaja mikro pora ukeramičkim prevlakama ZrO 2 MgO, ZrO 2 Y 2 O 3 iZrO 2 CeO 2 Y 2 O 3 je pokazala da slojevi imajurazličiti udeo pora. Najmanji udeo mikro pora jeizmeren u prevlaci ZrO 2 CeO 2 Y 2 O 3 sa sadržajem od14 %. U keramičkoj prevlaci ZrO 2 Y 2 O 3 je izmerenudeo mikro pora od 16 %, a u prevlaci ZrO 2 MgO jeizmeren udeo mikro pora od 17 %. Morfologijačestica praha je bitan parametar za ravnomeran tokpraha u plazmi i na njegovo topljenje. Keramičkiprah ZrO 2 CeO 2 Y 2 O 3 sa sfernom morfologijomčestica koje imaju glatku površinu su omogućileizvrsno i uniformno topljenje čestica u odnosu naklasične postupke izrade prahova [11].Ravnomerno istopljene čestice praha se pravilnijeoblikuju u sudaru sa substratom i deponuju slojevesa manjim sadržajem pora, koji imaju većukohezionu čvrstoću i zateznu čvrstoću spoja. Naslici 7 su prikazana mikrostrukture keramičkihprevlaka ZrO 2 MgO, ZrO 2 Y 2 O 3 i ZrO 2 CeO 2 Y 2 O 3 .Na interfejsu između keramičkih slojeva iveznih prevlaka nisu prisutne pukotine. Nauzorcima nije uočeno ljuštenje – piling keramičkihslojeva sa substrata. U keramičkim slojevima suprisutne tamne površine koje predstavljaju mikropore sa različitim udelima u zavisnosti od vrstekeramičke prevlake. Izmerene vrednosti sadržajamikro pora u keramičkim slojevima su u skladu samikrotvrdoćama i mikrostrukturama.4. ZAKLJUČAKSlika 7. Mikrostrukture keramičkih prevlaka: A –ZrO 2 MgO, B – ZrO 2 Y 2 O 3 i C – ZrO 2 CeO 2 Y 2 O 3 ;uvećanje 200×Na osnovu rezultata prikazanih u ovom radumože se zaključiti, da sistemi prevlakaNiCrAlCoY 2 O 3 / ZrO 2 MgO, NiCrAlCoY 2 O 3 /ZrO 2 Y 2 O 3 i NiCrAlCoY 2 O 3 / ZrO 2 CeO 2 Y 2 O 3 imajudobra svojstva. Predgrevanje substrata predepozicije prevlaka je omogućilo da se dobijuslojevi sa dobrim mikrostrukturama i mehaničkimosobinama. Keramički prah ZrO 2 CeO 2 Y 2 O 3 zbogsferne morfologije čestica praha je imao najmanjiudeo mikro pora i najbolju zateznu čvrstoću spoja.Oksid Y 2 O 3 koji je istovremeno bio prisutan uveznoj i keramičkoj prevlaci je uticao na boljuinter-lamelarnu kohezionu čvrstoću između dveprevlake. Sistem prevlaka NiCrAlCoY 2 O 3 /430 13 th International Conference on Tribology – Serbiatrib’13
ZrO 2 Y 2 O 3 je takođe zbog oksida Y 2 O 3 imao većuvrednost zatezne čvrstoće spoja od sistema prevlakaNiCrAlCoY 2 O 3 / ZrO 2 MgO.Najbolje karakteristike od svih sistema prevlakaje imao TBC sistem NiCrAlCoY 2 O 3 /ZrO 2 CeO 2 Y 2 O 3 .ZAHVALNOSTIAutor je zahvalan za finansijsku podrškuMinistarstva prosvete i nauke Republike Srbije(nacionalni projekti OI 174004, TR 34016).LITERATURA[1] B. Basler, R. Buergel, W. Hoffelner: Proc. of 1 st Int.Conf. on Plasma Surface Engineering, Germisch-Partenkirchen 1, pp. 347, 1988.[2] M.R. Mrdak, A. Vencl, B.D. Nedeljkovic, M.Stanković: Influence of plasma spraying parameterson properties of the thermal barrier coatings,Materials Science and Technology, Article in Press,doi: 10.1179/1743284712Y.0000000193, 2013.[3] A. Vencl, N. Manić, V. Popovic, M. Mrdak:Possibility of the abrasive wear resistancedetermination with scratch tester, Tribology Letters37, pp. 591-604, 2010.[4] E. Celik, I.H. Mutlu, E. Avci, Y.S. Hascicek: Y 2 O 3 -ZrO 2 insulation coatings on AgMg sheathed Bi-2212superconducting tapes by the sol-gel process, IEEETransactions on Applied Superconductivityb10,pp.1329-1332, 2000.[5] E. Celik, I.H. Mutlu, Y.S. Hascicek: Electricalproperties of high temperature insulation coatingsby the sol-gel method for magnet technology, IEEETransactions on Applied Superconductivity 10, pp.1341-1344, 2000.[6] E. Celik, E. Avci, Y.S. Hascicek: High temperaturesol-gel insulation coatings for HTS magnets and theiradhesion properties, Physica C: Superconductivity,Vol. 340, No. 2-3, pp. 193-202, 2000.[7] A.S. Demirkiran, E. Çelik, M. Yargan, E. Avci:Oxidation behaviour of functionally gradientcoatings including different composition of cermets,Surface and Coatings Technology 142-144, pp. 551-556, 2001.[8] Metco 461 Nickel Chromium-Aluminum-Cobalt-Yttria Composite Powder, Technical Bulletin 10-315, Sulzer Metco, 2000.[9] Metco 210 Magnesium Zirconate Powder, TechnicalBulletin 10-108, Sulzer Metco, 2000.[10] Metco 202NS Zirconium Oxide Composite Powder,Technical Bulletin 10-107, Sulzer Metco, 2000.[11] Metco 205NS PreAlloyed Ceria-Yttria StabilizedZirconia Powder, Technical Bulletin 10-338, SulzerMetco, 2000.[12] A. Vencl, M. Mrdak, I. Cvijović: Microstructuresand tribological properties of ferrous coatingsdeposited by APS (Atmospheric Plasma Spraying)on Al-alloy substrate, FME Transactions, Vol. 34,No. 3, pp. 151-157, 2006.[13] A. Vencl, M. Mrdak, M. Banjac: Correlation ofmicrostructures and tribological properties offerrous coatings deposited by atmospheric plasmaspraying on Al-Si cast alloy substrate, Metallurgicaland Materials Transactions A, Vol. 40, No. 2, pp.398-405, 2009.[14] M. Mrdak, A. Vencl, M. Ćosić: Microstructure andmechanical properties of the Mo-NiCrBSi coatingdeposited by atmospheric plasma spraying, FMETransactions, Vol. 37, No. 1, pp. 27-32, 2009.[15] M. Mrdak, A. Vencl: Uticaj parametara nanošenjaNiCr prevlake plazma sprej postupkom uatmosferskim uslovima na njene mehaničkekarakteristike i strukturu, Tehnička dijagnostika 10,pp. 9-14, 2011.[16] C.-J. Li, A. Ohmori: Relationships between themicrostructure and properties of thermally sprayeddeposits, Journal of Thermal Spray Technology 11,pp 365-374, 2002.[17] R. McPherson, B.V. Shafer: Interlamellar contactwithin plasma-sprayed coatings, Thin Solid Films97, pp. 201-204, 1982.[18] S. Kuroda, T.W. Clyne: The quenching stress inthermally sprayed coatings, Thin Solid Films 200,pp. 49-66, 1991.[19] C. Li, A. Ohmori, R. McPherson: The relationshipbetween microstructure and Young’s modulus ofthermally sprayed ceramic coatings, Journal ofMaterials Science 32, pp. 997-1004, 1997.[20] L. Bianchi, A.C. Leger, M. Vardelle, A. Vardelle, P.Fauchais: Splat formation and cooling of plasmasprayedzirconia, Thin Solid Films 305, pp. 35-47,1997.[21] V. Pershin, M. Lufitha, S. Chandra, J. Mostaghimi:Effect of substrate temperature on adhesion strengthof plasma-sprayed nickel coatings, Journal ofThermal Spray Technology 12, pp. 370-376, 2003.[22] P. Fauchais, M. Fukumoto, A. Vardelle, M.Vardelle: Knowledge concerning splat formation:An invited review, Journal of Thermal SprayTechnology 13, pp. 337-360, 2004.[23] A. Vencl, S. Arostegui, G. Favaro, F. Zivic, M.Mrdak, S. Mitrović, V. Popovic: Evaluation ofadhesion/cohesion bond strength of the thick plasmaspray coatings by scratch testing on coatings crosssections,Tribology International 44, pp. 1281-1288,2011.[24] Turbojet Engine – Standard Practices Manual (PN582005), Pratt & Whitney, East Hartford, USA,2002.13 th International Conference on Tribology – Serbiatrib’13 431
Page 1 and 2:
SerbianTribologySocietyFacultyofEng
Page 3 and 4:
Serbian Tribology SocietyUniversity
Page 5 and 6:
Supported byMinistry of Education,
Page 7 and 8:
PrefaceThe International Conference
Page 9 and 10:
ContentsPlenary Lectures1. THE GREE
Page 11 and 12:
27. WEAR CHARACTERISTICS OF HYBRID
Page 13 and 14:
Tribometry57. PRELIMINARY STUDY ON
Page 15:
Plenary Lectures13 th International
Page 18 and 19:
Serbian TribologySocietySERBIATRIB
Page 20 and 21:
Figure 4. Diagram of the height and
Page 22 and 23:
Realization of the approach is base
Page 24 and 25:
Page 27 and 28:
Page 29 and 30:
edge without chamfer and smaller ra
Page 31 and 32:
Figure 7. Accumulated tool life in
Page 33 and 34:
Figure 13. Calculated and measured
Page 35 and 36:
Page 37 and 38:
Friction deformation of the bronze
Page 39 and 40:
engine cylinders of 2-cylinder-twot
Page 41 and 42:
Table 1: Chemical composition of sa
Page 43 and 44:
Table 4: Comparative wear-resistanc
Page 45 and 46:
Page 47 and 48:
- measuring of coating thickness h
Page 49 and 50:
Figure 5. Functional scheme of the
Page 51 and 52:
Page 53 and 54:
Table 2. Test results for massive w
Page 55 and 56:
knowledge transfer in the field ofm
Page 57 and 58:
Table 1. Parameters of the electroc
Page 59 and 60:
Figure 6. Wear resistance by linear
Page 61 and 62:
coatings and observed their good we
Page 63 and 64:
c)a)Figure 2: SEM images and micros
Page 65 and 66:
Room temperature 300°CNi/µSiCNiNi
Page 67 and 68:
COF [-] COF [-]Fig.9: COF graphs at
Page 69 and 70:
Page 71 and 72:
about 260 nm is related to isolated
Page 73 and 74:
contact’s conformity [18] they ob
Page 75 and 76:
In order to calculate the metallic
Page 77 and 78:
microscopic inspection of the Rp3 s
Page 79 and 80:
Page 81 and 82:
otating plate. The shaft passes thr
Page 83 and 84:
similar trends of variation are obs
Page 85 and 86:
smooth, gear fiber-mild steel rough
Page 87 and 88:
[2] Tabor, D.: “Friction and wear
Page 89 and 90:
Page 91 and 92:
(10, 50 and 100 N) against surface
Page 93 and 94:
[9] B.R. Gligorijevic, A. Vencl, B.
Page 95 and 96:
dielectric properties, high resista
Page 97 and 98:
parameter, Sv, was slightly influen
Page 99 and 100:
dependence of roughness height and
Page 101 and 102:
Page 103 and 104:
Polyethylenes with a molecular weig
Page 105 and 106:
[9] K.S. Kanaga Karuppiah, A.L. Bru
Page 107 and 108:
MgCO3•CaCO3 (13% Mg), and carnall
Page 109 and 110:
fully compatible with MRI/MSCT imag
Page 111 and 112:
5. CONCLUSIONThe magnesium alloys a
Page 113 and 114:
Zinc dialkyldithiophosphate (ZDDP)
Page 115 and 116:
C- Lower deposits with NPNA on comb
Page 117 and 118:
films. Carraro et al. [10] examined
Page 119 and 120:
PlateCount No.Critical Load ( N)120
Page 121 and 122:
solid melt of ZA27 alloy using mech
Page 123 and 124:
SiC particles are uniformly distrib
Page 125 and 126:
in number of micro-cracks and clust
Page 127 and 128:
Page 129 and 130:
PBT has the average values of the f
Page 131 and 132:
mechanical pressure and thermal loa
Page 133 and 134:
Page 135 and 136:
3. EXPERIMENTAL RESULTSTaking into
Page 137 and 138:
[12] L. Blunt De, X. Jiang: Advance
Page 139 and 140:
2. EXPERIMENTALTESTING2.1 MaterialT
Page 141 and 142:
figure 3a it could be seen that the
Page 143 and 144:
Page 145 and 146:
and lubrication is done so that the
Page 147 and 148:
5. CONCLUSIONFigure 11. The accumul
Page 149 and 150:
Page 151 and 152:
esistance was found for composite c
Page 153 and 154:
onze, which is embedded within the
Page 155 and 156:
Page 157 and 158:
The test contact pair meets the req
Page 159 and 160:
complete. The SEM analysis maycontr
Page 161 and 162:
Page 163 and 164:
tg( ) tg 100, [%] (2)tgwhere are:
Page 165 and 166:
corresponding to the maximum value
Page 167 and 168:
Page 169 and 170:
electrostatics [17]. Due to the fle
Page 171 and 172:
250nm size have been observed, acco
Page 173 and 174:
ETH Zurich, Switzerland, where all
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 and 182:
composites. But the composite compo
Page 183 and 184:
Page 185 and 186:
coated and uncoated region after ad
Page 187 and 188:
has been measured between the top s
Page 189 and 190:
Fig. 9 shows the wear track obtaine
Page 191 and 192:
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
Page 199 and 200:
chemical vapor deposition method wi
Page 201 and 202:
analysis (a) and an approximate che
Page 203 and 204:
Table 3. Friction coefficients of s
Page 205:
A.K.Oleynik, V.M.Matsevity, ea.]. /
Page 209 and 210:
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
Page 223 and 224:
hydrodynamic regime. However, for b
Page 225 and 226:
to obtain the temperature distribut
Page 227 and 228:
force (pressure) between two contac
Page 229 and 230:
5E-06The total displacement [m]4.5E
Page 231 and 232:
Page 233 and 234:
[11]. Figure 5 shows s the influenc
Page 235 and 236:
efficiency of use, product quality,
Page 237 and 238:
38GSA. The chemical composition, de
Page 239 and 240:
niobium. It should be noted that fo
Page 241 and 242:
Figure 1. Friction force on side su
Page 243 and 244:
exploitation this changing is signi
Page 245 and 246:
2. EFFICIENCY OF CYCLO DRIVEEfficie
Page 247 and 248:
Figure 6. Dependence of cyclo drive
Page 249 and 250:
common for their ability to be inst
Page 251 and 252:
FNF (11)R sin cos11 21 22FNF
Page 253 and 254:
Normal force [N]4000350030002500200
Page 255 and 256:
analytical tests. The analytical te
Page 257 and 258:
Table 4. Results of zero samples of
Page 259 and 260:
noticeable, and by the end of explo
Page 261 and 262:
Page 263 and 264:
4. PLASTIC BEARING APPLICATIONSRega
Page 265 and 266:
Page 267 and 268:
For Elastohydrodynamic film thickne
Page 269 and 270:
The results concluded for different
Page 271 and 272:
For Thrust Force of 40KNKrytox 215
Page 273 and 274:
Krytox 215 (µ = 0.03204 Pa.s)Figur
Page 275 and 276:
Page 277 and 278:
- Reliable exploitation tools, prim
Page 279 and 280:
Page 281 and 282:
In addition, as a result of cyclic
Page 283 and 284:
AcknowledgementThe part of this res
Page 285 and 286:
Thepressure angle can be calculated
Page 287 and 288:
mechanism these parameters are fina
Page 289 and 290:
Page 291 and 292:
causes big changes of their propert
Page 293 and 294:
Table 2. Impact toughness of some t
Page 295 and 296:
Page 297 and 298:
Figure 1. Appearance of fractured f
Page 299 and 300:
implementation of these new manugac
Page 301 and 302:
additional energy is dissipated due
Page 303 and 304:
The adopted geometry parameters are
Page 305 and 306:
4. CONCLUSIONTools of virtual produ
Page 307 and 308:
Figure 2. Structure of the machinin
Page 309 and 310:
3. ANALYSIS OF RESULTSThe results o
Page 311 and 312:
Figure 15. Surface roughness regard
Page 313 and 314:
From the analysis of the diagram it
Page 315 and 316:
comparison from economic, energy co
Page 317 and 318:
Advantages and disadvantages of tra
Page 319 and 320:
The information provided by footwea
Page 321 and 322:
Force (N)5,554,543,532,521,510,50Ex
Page 323 and 324:
additives, that had been, until rec
Page 325 and 326:
Figure 1. Test results for samples
Page 327 and 328:
Table 7. Test results of oil sample
Page 329 and 330:
Input parameters- Current intensity
Page 331 and 332:
edge formed into a thin line. At th
Page 333 and 334:
Lower values of current are not res
Page 335 and 336:
Table 1. Chemical composition of si
Page 337 and 338:
flowable at high temperatures and v
Page 339 and 340:
holes (pits) emerge in the shape of
Page 341:
[4] W. Schatt, K-P. Wieters, Pulver
Page 345 and 346:
Page 347 and 348:
assumption allows us to use, instea
Page 349 and 350:
where P is the load, a - radius of
Page 351 and 352:
determination (total running in tim
Page 353 and 354:
μm, compared with Figure 17, wich
Page 355 and 356:
Serbian TribologySocietySERBIIATRIB
Page 357 and 358:
Especially when the chain transfer
Page 359 and 360:
is obvious that this isa so-calledw
Page 361 and 362:
winches. The authors are inclined t
Page 363 and 364:
find parameters of robot laser hard
Page 365 and 366:
Page 367 and 368:
each of which is measured by the le
Page 369 and 370:
Page 371 and 372:
Fractal dimensions were determined
Page 373 and 374:
Page 375 and 376:
Figure 3. Modified force acting sch
Page 377 and 378:
0.25Lubricant: L3DC 04Friction coef
Page 379 and 380:
nanocomposites. The influence of fi
Page 381 and 382:
4. RESULTS AND DISCUSSION4.1 Morpho
Page 383 and 384:
Figure 6. Loading and unloadin vers
Page 385 and 386:
3 8 12 1 4 2 4
Page 387 and 388:
Page 389 and 390:
The material after qualifying the r
Page 391 and 392:
It has already been mentioned that
Page 393 and 394: Degradation & Stability, Vol. 69, N
Page 395 and 396: conformance to researchers’ requi
Page 397 and 398: This part is assembled of pneumatic
Page 399 and 400: matrixes describe the state of the
Page 401 and 402: values influence of themeasurement
Page 403 and 404: Figure 1. Friction stir weldinga -
Page 405 and 406: (t 2 t
Page 407 and 408: M fr / T [-] [-]10.90.80.70.60.50.4
Page 409 and 410: M fr / T [-]10.90.80.70.60.50.40.30
Page 411 and 412: experimentally determined that for
Page 413 and 414: 4. DISCUSSIONAccording to the theor
Page 415 and 416: Serbian TribologySocietySERBIATRIB
Page 417 and 418: 2.1 The life cycle of the reportThe
Page 419: Obviously the report is checked and
Page 425 and 426: uticaja na osnovu kompozita, a time
Page 427 and 428: 5. ZAKLJUČCIStruktura tiksolivene
Page 429 and 430: dobijene različite karakteristike
Page 431 and 432: vizuelno, na dnevnoj svetlosti, pod
Page 433 and 434: LITERATURA[1] Зинченко В.
Page 435 and 436: Slika 1. Rotorni bager - glodar VII
Page 437 and 438: stvaraju sliku stanja i svoja zapa
Page 439 and 440: njihovih kotrljanih elemenata. Mere
Page 441 and 442: postupka i uticaja parametara depoz
Page 443: posledica različite raspodele mikr
Page 449 and 450: 3.2 Pneumatska osetljivostOblast pr
Page 451 and 452: p mg (δ), koji je zbog malih struj
Page 453 and 454: PNEUMATIC PROBE HEAD SELECTION FOR
Page 455 and 456: 1. Podsistem kopanja2. Podsistem pr
Page 457 and 458: Slika 3. Kriva habanjaNa tom dijagr
Page 459 and 460: Mjereni su parametri habanja i pril
Page 461 and 462: preše prevladavaju kombinirani uvj
Page 463 and 464: a) b)Slika 5. Karakteristična mikr
Page 465: varijantnih materijala u dostavnom
Page 468 and 469: Jovanović D. 414, 446KKaleicheva J
Page 470 and 471: CIP - Каталогизација
show all

Proceedings of SerbiaTrib '13

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?