Friction and wear studies of Nimonic 80A and 21-4N valve materials against GGG-40 under dry sliding conditions, at temperatures ranging from 50 °C to 500 °C, are presented in this paper. Friction coefficient was found to be continuously decreased with time for all tests with prominent running-in behavior seen in the 50 °C and 500 °C tests. Higher friction coefficient and wear were observed at 300 °C as compared to those at 50 °C and 500 °C. Formation of oxide Fe3O4, at 300 °C, was confirmed by Raman spectroscopy, which resulted in a higher friction coefficient and wear. Raman spectroscopy further revealed the presence of α-Fe2O3, hematite, in most cases, with the presence of oxides of Ni–Cr and Ni–Fe as well. Energy dispersive spectroscopy (EDS) results on the samples confirmed the same. Wear at 500 °C was found to be the least for both the valve materials with scanning electron microscopy (SEM) confirming the formation of well-developed glaze layers.

References

References
1.
Forsberg
,
P.
,
2013
, “
Combustion Valve Wear: A Tribological Study of Combustion Valve Sealing Interfaces
,”
Ph.D. thesis
, Uppsala Universitet, Uppsala, Sweden.
2.
Lewis
,
R.
, and
Dwyer-Joyce
,
R. S.
,
2002
, “
Wear of Diesel Engine Inlet Valves and Seat Inserts
,”
Proc. Inst. Mech. Eng., Part D
,
216
(
3
), pp. 205–216.
3.
Wang
,
Y. S.
, and
Narasimhan
,
S.
,
2001
, “
Engine Valve and Seat Insert Wear Study With a Simulator
,”
Sci. China Ser. A
,
44
(Suppl.), pp.
235
241
.
4.
Forsberg
,
P.
,
Debord
,
D.
, and
Jacobson
,
S.
,
2014
, “
Quantification of Combustion Valve Sealing Interface Sliding—A Novel Technique and Simulations Experimental and Simulations
,”
Tribol. Int.
,
69
, pp.
150
155
.
5.
Godfrey
,
D.
, and
Courtney
,
R.
,
1971
, “
Investigation of the Mechanism of Exhaust Valve Seat Wear in Engines Run on Unleaded Gasoline
,”
SAE
Technical Paper No. 710356.
6.
Giles
,
W.
,
1971
, “
Valve Problems With Lead Free Gasoline
,”
SAE
Technical Paper No. 710368.
7.
Kent
,
W.
, and
Finnigan
,
F.
,
1971
, “
The Effect of Some Fuel and Operating Parameters on Exhaust Valve Seat Wear
,”
SAE
Technical Paper No. 710673.
8.
Giles
,
W.
, and
Updike
,
S.
,
1971
, “
Influence of Low Lead Fuels on Exhaust Valve Performance
,”
SAE
Technical Paper No. 710674.
9.
Schoonveld
,
G.
,
Riley
,
R.
,
Thomas
,
S.
, and
Schiff
,
S.
,
1986
, “
Exhaust Valve Recession With Low-Lead Gasolines
,”
SAE
Technical Paper No. 861550.
10.
Croudace
,
M.
, and
Wusz
,
T.
,
1987
, “
The Effect of Low Lead Gasolines and Some Aftermarket Lead Substitutes on Exhaust Valve Seat Wear
,”
SAE
Technical Paper No. 872076.
11.
Pyle
,
W.
, and
Smrcka
,
N.
,
1993
, “
The Effect of Lubricating Oil Additives on Valve Recession in Stationary Gaseous-Fueled Four-Cycle Engines
,”
SAE
Technical Paper No. 932780.
12.
Ando
,
K.
,
Manabe
,
A.
, and
Yasuda
,
A.
,
2005
, “
Hardfaced Valve and P/M Valve Seat System for CNG and LPG Fuel Engines
,”
SAE
Technical Paper No. 2005-01-0718.
13.
Stott
,
F. H.
,
Lin
,
D. S.
,
Wood
,
G. C.
, and
Stevenson
,
C. W.
,
1976
, “
The Tribological Behaviour of Nickel and Nickel-Chromium Alloys at Temperatures From 20 °C to 800 °C
,”
Wear
,
36
(
2
), pp.
147
174
.
14.
Rynio
,
C.
,
Hattendorf
,
H.
,
Klower
,
J.
, and
Eggeler
,
G.
,
2014
, “
On the Physical Nature of Tribolayers and Wear Debris After Sliding Wear in a Superalloy/Steel Tribosystem at 25 and 300 °C
,”
Wear
,
317
(1–2), pp.
26
38
.
15.
Forsberg
,
P.
,
Hollman
,
P.
, and
Jacobson
,
S.
,
2011
, “
Wear Mechanism Study of Exhaust Valve System in Modern Heavy Duty Combustion Engines
,”
Wear
,
271
(9–10), pp.
2477
2484
.
16.
Forsberg
,
P.
,
Gustavsson
,
F.
,
Hollman
,
P.
, and
Jacobson
,
S.
,
2013
, “
Comparison and Analysis of Protective Tribofilms Found on Heavy Duty Exhaust Valves From Field Service and Made in a Test Rig
,”
Wear
,
302
(1–2), pp.
1351
1359
.
17.
Forsberg
,
P.
,
Elo
,
R.
, and
Jacobson
,
S.
,
2014
, “
The Importance of Oil and Particle Flow for Exhaust Valve Wear—An Experimental Study
,”
Tribol. Int.
,
69
, pp.
176
183
.
18.
Jenkins
,
L.
, and
Larson
,
J.
,
1978
, “
The Development of a New Austenitic Stainless Steel Exhaust Valve Material
,”
SAE
Technical Paper No. 780245.
19.
Sato
,
K.
,
Saka
,
T.
,
Ohno
,
T.
,
Kageyama
,
K.
,
Sato
,
K.
,
Noda
,
T.
, and
Okabe
,
M.
,
1998
, “
Development of Low-Nickel Superalloys for Exhaust Valves
,”
SAE
Technical Paper No. 980703.
20.
Kato
,
T.
,
Uyehara
,
N.
,
Matsunaga
,
K.
,
Isomura
,
T.
,
Matsuno
,
M.
, and
Lizuka
,
M.
,
1981
, “
A New Iron-Base Superalloy for Exhaust Valves
,”
SAE
Technical Paper No. 810032.
21.
Umino
,
S.
,
Hamada
,
A.
,
Kenmoku
,
T.
, and
Nishizawa
,
Y.
,
1998
, “
New Fe-Base Exhaust Valve Material for Higher Heat Resistance
,”
SAE
Technical Paper No. 980704.
22.
Narasimhan
,
S. L.
,
Larson
,
J. M.
, and
Whelan
,
A. P.
, 1981–1982, “
Wear Characterization of New Nickel-Base Alloys For Internal Combustion Engine Valve Seat Applications
,”
Wear
,
74
(2), pp.
213
227
.
23.
Wang
,
Y.
,
Narasimhan
,
S.
,
Larson
,
J.
, and
Barber
,
G.
,
1996
, “
A Review of Ceramic Tribology and Application of Si-Based Ceramics to Engine Valves/Seat Inserts
,”
SAE
Technical Paper No. 960304.
24.
Jiangang
,
G. S.
,
2008
, “
Evaluation of Silicon-Nitride Ceramic Valves
,”
Int. J. Appl. Ceram. Technol.
,
5
(
2
) pp.
164
180
.
25.
Onoda
,
M.
,
Kuroishi
,
N.
, and
Motooka
,
N.
,
1988
, “
Sintered Valve Seat Insert for High Performance Engine
,”
SAE
Technical Paper No. 880668.
26.
Kawata
,
H.
,
Hayashi
,
K.
,
Ishii
,
K.
,
Maki
,
K.
,
Ehira
,
A.
, and
Toriumi
,
M.
,
1998
, “
The Development of a High Speed Steel Based Sintered Material for High Performance Exhaust Valve Seat Inserts
,”
SAE
Technical Paper No. 980328.
27.
Fujitsuka
,
H.
,
Kawata
,
H.
,
Oyanagi
,
M.
,
Miyazawa
,
T.
, and
Fujik
,
A.
,
2004
, “
The Development of a Cobalt-Free Exhaust Valve Seat Insert
,”
SAE
Technical Paper No. 2004-01-0502.
28.
de Wilde
,
E. F.
,
1967
, “
Investigation of Engine Exhaust Valve Wear
,”
Wear
,
10
(
3
), pp.
231
244
.
29.
Radcliff
,
A. S.
, and
Stringer
,
J.
,
1974
, “
An Investigation of the High-Temperature Corrosion (Burning) of an Automobile Exhaust Valve
,”
Corros. Sci.
,
14
(
8
), pp.
483
490
.
30.
Zhao
,
R.
,
Barber
,
G. C.
,
Wang
,
Y. S.
, and
Larson
,
J. E.
,
1997
, “
Wear Mechanism Analysis of Engine Exhaust Valve Seats With a Laboratory Simulator
,”
Tribol. Trans.
,
40
(
2
), pp.
209
218
.
31.
Kim
,
D. K.
,
Kim
,
D. Y.
,
Ryu
,
S. H.
, and
Jin
,
D.
,
2001
, “
Application of Nimonic 80A to the Hot Forging of an Exhaust Valve Head
,”
J. Mater. Process. Technol.
,
113
(1–3), pp.
148
152
.
32.
Rynio
,
C.
,
Hattendorf
,
H.
,
Klöwer
,
J.
,
Lüdecke
,
H.-G.
, and
Eggeler
,
G.
,
2013
, “
High Temperature Wear Testing of a Ni-Based Superalloy Pin on a Cast Iron Disc
,”
Materialwiss. Werkstofftech.
44
(
10
), pp.
825
831
.
33.
Rynio
,
C.
,
Hattendorf
,
H.
,
Klower
,
J.
, and
Eggeler
,
G.
,
2014
, “
The Evolution of Tribolayers During High Temperature Sliding Wear
,”
Wear
,
315
(1–2), pp.
1
10
.
34.
Forsberg
,
P.
,
Hollman
,
P.
, and
Jacobson
,
S.
,
2012
, “
Wear Study of Coated Heavy Duty Exhaust Valve Systems in a Experimental Test Rig
,”
SAE
Technical Paper No. 2012-01-0546.
35.
Slatter
,
T.
,
Taylor
,
H.
,
Lewis
,
R.
, and
King
,
P.
,
2009
, “
The Influence of Laser Hardening on Wear in the Valve and Valve Seat Contact
,”
Wear
,
267
(5–8), pp.
797
806
.
36.
Slatter
,
T.
,
Lewis
,
R.
, and
Jones
,
A. H.
,
2011
, “
The Influence of Induction Hardening on the Impact Wear Resistance of Compacted Graphite Iron (CGI)
,”
Wear
,
270
(3–4), pp.
302
311
.
37.
Dissel
,
R.
,
Barber
,
G.
,
Larson
,
J.
, and
Narasimhan
,
S.
,
1989
, “
Engine Valve Seat and Insert Wear
,”
SAE
Technical Paper No. 892146.
38.
Wang
,
Y.
,
Schaefer
,
S.
,
Bennett
,
C.
, and
Barber
,
G.
,
1995
, “
Wear Mechanisms of Valve Seat and Insert in Heavy Duty Diesel Engine
,”
SAE
Technical Paper No. 952476.
39.
Ootani
,
T.
,
Yahata
,
N.
,
Fujiki
,
A.
, and
Ehira
,
A.
,
1995
, “
Impact Wear Characteristics of Engine Valve and Valve Seat Insert Materials at High Temperature (Impact Wear Tests of Austenitic Heat-Resistant Steel SUH36 Against Fe-Base Sintered Alloy Using Plane Specimens)
,”
Wear
,
188
(1–2), pp.
175
184
.
40.
Ramalho
,
A.
,
Kapsa
,
P.
, and
Bouvard
,
G.
,
2009
, “
Effect of Temperatures up to 400 °C on the Impact-Sliding of Valve-Seat Contacts
,”
Wear
,
267
(5–8), pp.
777
780
.
41.
Liang
,
X.
,
Strong
,
G.
,
Eickmeyer
,
D.
, and
Myers
,
K.
,
1999
, “
A Study of Valve Seat Insert Wear Mechanisms
,”
SAE
Technical Paper No. 1999-01-3673.
42.
Zhang
,
S.
,
Jin
,
X.
,
Zhong
,
W.
,
Xu
,
A.
,
Zhou
,
X.
,
Ma
,
L.
, and
Qui
,
Z.
,
2012
, “
Investigation on Tribological Behaviour of Diesel Engine Exhaust Valve Dry Sliding Against Valve Seat
,”
Proc. Inst. Mech. Eng., Part J
,
227
(
7
), pp.
798
805
.
43.
Lewis
,
R.
, and
Dwyer-Joyce
,
R.
,
2001
, “
Design Tools for Prediction of Valve Recession and Solving Valve/Seat Failure Problems
,”
SAE
Technical Paper No. 2001-01-1987.
44.
Jiang
,
J.
,
Stott
,
P. R.
, and
Stack
,
M. M.
,
2004
, “
A Generic Model for Dry Sliding Wear of Metals at Elevated Temperatures
,”
Wear
,
256
(9–10), pp.
973
985
.
45.
Blau
,
P. J.
,
2009
, “
A Wear Model for Diesel Engine Exhaust Valves
,” Oak Ridge National Laboratory, Oak Ridge, TN, ORNL Technical Report No.
ORNL TM 2009/259
.
46.
Yu
,
Z. W.
, and
Xu
,
X. L.
,
2006
, “
Failure Analysis and Metallurgical Investigation of Diesel Engine Exhaust Valves
,”
Eng. Failure Anal.
,
13
(
4
), pp.
673
682
.
47.
Oh
,
S. J.
,
Cook
,
D. C.
, and
Townsend
,
H. E.
,
1998
, “
Characterization of Iron Oxides Formed as Corrosion Products on Steel
,”
Hyperfine Interact.
,
112
(1), pp.
59
65
.
48.
Li
,
Y. S.
,
Church
,
J. S.
, and
Woodhead
,
A. L.
,
2012
, “
Infrared and Raman Spectroscopic Studies on Iron Oxide Magnetic Nano-Particles and Their Surface Modifications
,”
J. Magn. Magn. Mater.
,
324
(
8
), pp.
1543
1550
.
49.
Kim
,
J. H.
, and
Hwang
,
I. S.
,
2005
, “
Development of an In Situ Raman Spectroscopic System for Surface Oxide Films on Metals and Alloys in High Temperature Water
,”
J. Nucl. Eng. Des.
,
235
(
9
), pp.
1029
1040
.
50.
Österle
,
W.
,
Giovannozzi
,
A.
,
Gradt
,
T.
,
Häusler
,
I.
,
Rossi
,
A.
,
Wetzel
,
B.
, and
Zhang
,
G.
,
2015
, “
Exploring the Potential of Raman Spectroscopy for the Identification of Silicone Oil Residue and Wear Scar Characterization for the Assessment of Tribo Film Functionality
,”
Tribol. Int.
,
90
, pp.
481
490
.
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