Class information for:
Level 1: ZDDP//ANTIWEAR ADDITIVES//ZINC DIALKYLDITHIOPHOSPHATE

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
4125 1843 21.6 46%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
16 4 ENGINEERING, CIVIL//CONSTRUCTION & BUILDING TECHNOLOGY//MECHANICS 627508
301 3       JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME//ENGINEERING, MECHANICAL//WEAR 40881
2188 2             ZDDP//LUBRICATION ENGINEERING//TRIBOLOGY & LUBRICATION TECHNOLOGY 4905
4125 1                   ZDDP//ANTIWEAR ADDITIVES//ZINC DIALKYLDITHIOPHOSPHATE 1843

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ZDDP authKW 1476234 6% 77% 116
2 ANTIWEAR ADDITIVES authKW 827610 5% 57% 88
3 ZINC DIALKYLDITHIOPHOSPHATE authKW 621765 2% 89% 42
4 ANTIWEAR authKW 577520 4% 44% 79
5 BOUNDARY LUBRICATION authKW 474497 7% 21% 137
6 TRIBOFILM authKW 439126 4% 36% 73
7 ZINC DITHIOPHOSPHATE authKW 414164 1% 100% 25
8 TRIBOCHEMISTRY authKW 335854 4% 26% 78
9 ZNDTP authKW 312981 1% 82% 23
10 MODTC authKW 280643 1% 71% 24

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Engineering, Mechanical 100236 74% 0% 1370
2 Engineering, Chemical 4096 21% 0% 378
3 Engineering, Petroleum 1407 3% 0% 53
4 Materials Science, Multidisciplinary 1005 19% 0% 352
5 Materials Science, Coatings & Films 423 4% 0% 72
6 Energy & Fuels 89 3% 0% 58
7 Chemistry, Physical 53 7% 0% 130
8 Physics, Applied 17 5% 0% 99
9 Chemistry, Multidisciplinary 5 5% 0% 84
10 Chemistry, Analytical 4 2% 0% 42

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 LUBRICANTS 134892 1% 31% 26
2 IMPERIAL OIL PROD 99399 0% 100% 6
3 SOLID LUBRICAT 80982 2% 16% 30
4 ORONITE ADDIT 66266 0% 100% 4
5 UMR 55 13 66266 0% 100% 4
6 BIO FUELS 59163 0% 71% 5
7 PETR PL ENGN 51767 0% 63% 5
8 LUBRICATING OIL PETROCHINA 49700 0% 100% 3
9 SUR E STUDIES 47999 2% 9% 32
10 FUNCT SUR ES 35778 1% 20% 11

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 LUBRICATION ENGINEERING 279190 7% 13% 130
2 ASLE TRANSACTIONS 241500 4% 18% 82
3 TRIBOLOGY LETTERS 226454 10% 7% 185
4 TRIBOLOGY TRANSACTIONS 196335 10% 7% 179
5 TRIBOLOGY INTERNATIONAL 124246 10% 4% 188
6 WEAR 105168 14% 2% 263
7 JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS 99440 6% 6% 103
8 INDUSTRIAL LUBRICATION AND TRIBOLOGY 51432 3% 6% 49
9 LUBRICATION SCIENCE 49885 2% 10% 29
10 PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY 29824 3% 3% 53

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 ZDDP 1476234 6% 77% 116 Search ZDDP Search ZDDP
2 ANTIWEAR ADDITIVES 827610 5% 57% 88 Search ANTIWEAR+ADDITIVES Search ANTIWEAR+ADDITIVES
3 ZINC DIALKYLDITHIOPHOSPHATE 621765 2% 89% 42 Search ZINC+DIALKYLDITHIOPHOSPHATE Search ZINC+DIALKYLDITHIOPHOSPHATE
4 ANTIWEAR 577520 4% 44% 79 Search ANTIWEAR Search ANTIWEAR
5 BOUNDARY LUBRICATION 474497 7% 21% 137 Search BOUNDARY+LUBRICATION Search BOUNDARY+LUBRICATION
6 TRIBOFILM 439126 4% 36% 73 Search TRIBOFILM Search TRIBOFILM
7 ZINC DITHIOPHOSPHATE 414164 1% 100% 25 Search ZINC+DITHIOPHOSPHATE Search ZINC+DITHIOPHOSPHATE
8 TRIBOCHEMISTRY 335854 4% 26% 78 Search TRIBOCHEMISTRY Search TRIBOCHEMISTRY
9 ZNDTP 312981 1% 82% 23 Search ZNDTP Search ZNDTP
10 MODTC 280643 1% 71% 24 Search MODTC Search MODTC

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 NICHOLLS, MA , DO, T , NORTON, PR , KASRAI, M , BANCROFT, GM , (2005) REVIEW OF THE LUBRICATION OF METALLIC SURFACES BY ZINC DIALKYL-DITHLOPHOSPHATES.TRIBOLOGY INTERNATIONAL. VOL. 38. ISSUE 1. P. 15-39 96 85% 161
2 SPIKES, H , (2004) THE HISTORY AND MECHANISMS OF ZDDP.TRIBOLOGY LETTERS. VOL. 17. ISSUE 3. P. 469-489 65 93% 287
3 SPIKES, H , (2008) LOW- AND ZERO-SULPHATED ASH, PHOSPHORUS AND SULPHUR ANTI-WEAR ADDITIVES FOR ENGINE OILS.LUBRICATION SCIENCE. VOL. 20. ISSUE 2. P. 103-136 70 70% 76
4 MORINA, A , NEVILLE, A , (2007) TRIBOFILMS: ASPECTS OF FORMATION, STABILITY AND REMOVAL.JOURNAL OF PHYSICS D-APPLIED PHYSICS. VOL. 40. ISSUE 18. P. 5476 -5487 51 100% 12
5 SHARMA, V , ERDEMIR, A , ASWATH, PB , (2015) AN ANALYTICAL STUDY OF TRIBOFILMS GENERATED BY THE INTERACTION OF ASHLESS ANTIWEAR ADDITIVES WITH ZDDP USING XANES AND NANO-INDENTATION.TRIBOLOGY INTERNATIONAL. VOL. 82. ISSUE . P. 43 -57 41 93% 3
6 MOSEY, NJ , WOO, TK , KASRAI, M , NORTON, PR , BANCROFT, GM , MUSER, MH , (2006) INTERPRETATION OF EXPERIMENTS ON ZDDP ANTI-WEAR FILMS THROUGH PRESSURE-INDUCED CROSS-LINKING.TRIBOLOGY LETTERS. VOL. 24. ISSUE 2. P. 105-114 48 86% 33
7 GOSVAMI, NN , BARES, JA , MANGOLINI, F , KONICEK, AR , YABLON, DG , CARPICK, RW , (2015) MECHANISMS OF ANTIWEAR TRIBOFILM GROWTH REVEALED IN SITU BY SINGLE-ASPERITY SLIDING CONTACTS.SCIENCE. VOL. 348. ISSUE 6230. P. 102 -106 27 84% 27
8 NICHOLLS, M , NAJMAN, MN , ZHANG, Z , KASRAI, M , NORTON, PR , GILBERT, PUPA , (2007) THE CONTRIBUTION OF XANES SPECTROSCOPY TO TRIBOLOGY.CANADIAN JOURNAL OF CHEMISTRY. VOL. 85. ISSUE 10. P. 816-830 46 82% 20
9 LI, YR , PEREIRA, G , KASRAI, M , NORTON, PR , (2007) STUDIES ON ZDDP ANTI-WEAR FILMS FORMED UNDER DIFFERENT CONDITIONS BY XANES SPECTROSCOPY, ATOMIC FORCE MICROSCOPY AND 31P NMR.TRIBOLOGY LETTERS. VOL. 28. ISSUE 3. P. 319 -328 37 97% 14
10 KIM, B , MOURHATCH, R , ASWATH, PB , (2010) PROPERTIES OF TRIBOFILMS FORMED WITH ASHLESS DITHIOPHOSPHATE AND ZINC DIALKYL DITHIOPHOSPHATE UNDER EXTREME PRESSURE CONDITIONS.WEAR. VOL. 268. ISSUE 3-4. P. 579-591 33 89% 33

Classes with closest relation at Level 1


Rank Class id link
1 24638 OIL PLICAT MANAGEMENT//OIL CONDITION MONITORING//INTERNAL COMBUSTION ENGINE OILS
2 31552 OVERBASED DETERGENT//LUBRICANT DETERGENT//POLYBUTENYLSUCCINIMIDE
3 22115 SCUFFING//AL390 T6//MACHINES MOTOR VEHICLES IMRIPS
4 21718 GRP CIENCIA MAT INGN MET//INGN MAT FABRICAC//STATE SOLID LUBRICAT
5 9700 BIOLUBRICANT//ESTOLIDES//IN SITU EPOXIDATION
6 5555 LUBRICANT ADDITIVES//MAT INTER ES//MOS2 NANOTUBES
7 34162 ANTI RUST ACTIVITY//ANTI RUST ADDITIVES//WATERBASED CUTTING FLUIDS
8 15997 PISTON RING//PISTON SKIRT//CRANKSHAFT
9 31400 JOURNAL OF JAPAN SOCIETY OF LUBRICATION ENGINEERS//CONTACT FATIGUE CRACK FORMATION//DISCONTINUOUS RUBBING
10 7902 WEAR//WERKSTOFFKUNDE 2//WATER LUBRICATION

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