Journal of Materials Research and Technology Journal of Materials Research and Technology
J Mater Res Technol 2012;1:134-40 DOI: 10.1016/S2238-7854(12)70024-8
Thermal Stability of the MoS2 Phase in Injection Moulded 17-4 PH Stainless Steel
Kaline Pagnan Furlan1, Cristiano Binder1, Aloisio Nelmo Klein1, José Daniel Biasoli de Mello1,2,,
1 Universidade Federal de Santa Catarina, Materials Laboratory – Labmat, Florianópolis, Brazil
2 Universidade Federal de Uberlândia, Tribology and Materials Laboratory, Uberlândia, Brazil
Received 31 January 2012, Accepted 06 September 2012
Abstract

In the present paper, an analysis of the stability of the MoS2 compound in 17-4 PH stainless steel matrix during the sintering of powder injection moulded samples is presented. A feedstock containing 10% vol. of the solid lubricant phase MoS2, mixed with 17-4 PH stainless steel powder was prepared and injected. The sintering was carried out at various temperatures ranging from 650°C to 1,300°C. The progress of the dissociation process of MoS2 as a function of sintering temperature and the formation of new phases were analyzed via X-ray diffraction. The microstructure of the resulting material was analyzed by SEM/EDS. As expected, for temperatures above 650°C, the results confirm the decomposition of MoS2 and formation of others sulphides during the sintering cycle. In addition, there occurs dissolution of molybdenum resulting from MoS2 decomposition.

Key words
Phase stability, Molybdenum disulfide, Powder Injection Moulding, Self-lubricant materials
This article is only available in PDF
References
1.
C. Busch
Solid lubrication
Lubricants and Lubrication, 2, pp. 694-714
2.
A. Erdemir
Solid lubricants and self-lubricating films
3.
A.R. Lansdown
Molybdenum disulphide lubrication
Tribology Series, 35,
4.
J.L. Li,D.S. Xiong
Tribological properties of nickel-based self-lubricating composite at elevated temperature and counterface material selection
Wear, 265 (2008), pp. 533-539
5.
K.C. Ludema
Lubrication by Inert Fluids, Greases, and Solids
Friction, Wear, Lubrication - A textbook in tribology, pp. 136-139
6.
H.E. Sliney
Solid lubricants
AIH Committee. Metals Handbook XIII, Materials Park, ASM, (1992)
7.
G.W. Stachowiak,A.W. Batchelor
Solid Lubrication and Surface Treatments
Engineering Tribology, pp. 411-416
8.
C. Binder,G. Hammes,R. Schroeder,A.N. Klein,J.B.D. de Mello,R. Binder
Fine tuned steels point the way to a focused future
Metal Powder Report, 65 (2010), pp. 29-31
9.
Klein AN, Binder C, Hammes G, de Mello JDB, Ristow Jr. W, Binder R. Self-lubricating sintered steels with high mechanical resistance obtained via in situ formation of solid lubricant particles during sintering. In: European Powder Metallurgy Association (EPMA) (org.). Proceedings of the EURO PM2009. Denmark; 2009, 1:191–6.
10.
S. Raadnui,S. Mahathanabodee,R. Tongsri
Tribological behaviour of sintered 316L stainless steel impregnated with MoS2 plain bearing
Wear, 265 (2008), pp. 546-553
11.
B. Sustarsic,L. Kosec,S. Dolinsek,B. Podgornik
The characteristics of vacuum sintered M3/2 type HSSs with MoS2 addition
J Mater Process Technol, 143–144 (2003), pp. 98-104
12.
J.L. Li,D.S. Xiong,M.F. Huo
Friction and wear properties of Ni-Cr-W-Al-Ti-MoS2 at elevated temperatures and self-consumption phenomena
Wear, 265 (2008), pp. 566-575
13.
S. Dhanasekaran,R. Gnanamoorthy
Dry sliding friction and wear characteristics of Fe-C-Cu alloy containing molybdenum di sulphide
Mater Des, 28 (2007), pp. 1135-1141
14.
Y.X. Wu,F.X. Wang,Y.Q. Cheng,N.P. Chen
A study of the optimization mechanism of solid lubricant concentration in Ni/MoS2 selflubricating composite
Wear, 205 (1997), pp. 64-70
15.
H. Kato,M. Takama,Y. Iwai,K. Washida,Y. Sasaki
Wear and mechanical properties of sintered copper-tin composites containing graphite or molybdenum disulfide
Wear, 255 (2003), pp. 573-577
16.
R.M. German
Thermal processing optimization of injection molded stainless steel powders
Mater Manuf Processes, 12 (1997), pp. 713-735
17.
H.J. Sung,T.K. Ha,S. Ahn,Y.W. Chang
Powder injection molding of a 17-4 PH stainless steel and the effect of sintering temperature on its microstructure and mechanical properties
J Mater Process Technol, 130–131 (2002), pp. 321-327
18.
Y.X. Wu,D. Blaine,B. Marx,C. Schlaefer,R.M. German
Sintering densification and microstructural evolution of injection molding grade 17-4 PH stainless steel powder
Metall Mater Trans A, 33 (2002), pp. 2185-2194
19.
H.Z. Ye,X.Y. Liu,H.P. Hong
Sintering of 17-4 PH stainless steel feedstock for metal injection molding
Mater Lett, 62 (2008), pp. 3334-3336
20.
ASM Specialty Handbook: Stainless Steels,
21.
German RM. A quick guide to candidate components for PIM production. [cited 2007 April]. Available from: http://www.immnet.com/articles?article=2000.
22.
B.D. Cullity
Elements of X-ray Diffraction
2, Addison-Wesley, (1978)
23.
P. Skarvelis,G.D. Papadimitriou
Microstructural and tribological evaluation of potential self-lubricating coatings with MoS2/MnS additions produced by the plasma transferred arc technique
Tribol Int, 42 (2009), pp. 1765-1770
24.
Gallioto A. Estudo da sinterabilidade de materiais ferrosos contendo elevados teores de sulfetos como aditivos. [M. Sc. dissertation]. Brazil: Universidade Federal de Santa Catarina, 2005.
25.
R. Adamian,E. Almendra
Físico química: uma aplicação aos materiais
COPPE/UFRJ, (2002)
26.
R. Bradley,S. Ahmad
Failure of a Transfer Line on an Ethane Cracking Furnace Due to Sulfidation
Practical Failure Analysis, 3 (2003), pp. 79-85
Corresponding author.
Copyright © 2012. Elsevier Editora Ltda. and Brazilian Metallurgical, Materials and Mining Association
J Mater Res Technol 2012;1:134-40 DOI: 10.1016/S2238-7854(12)70024-8