Publications:

1."Observation of Mis-Oriented Tertiary Dendrite Arms during Controlled Directional Solidification in Aluminum-7 wt% Silicon Alloys", J.R. Van Hoose, R.N. Grugel, S.N. Tewari, L.N. Brush, R.Erdmann, and D.R. Poirier, Metall. Materials. Trans.  (August 2012)
2."Environmental Durability of Slurry Based Mullite-Gadolinium Silicate EBCs on Silicon Carbide", S. Ramasamy, S. N. Tewari, K.N. Lee, R.T. Bhatt and D.S. Fox, Journal of the European Ceramic Society 31 (2011) 1123-1130.
3."Mullite-Gadolinium Silicate Environmental Barrier Coatings for Melt Infiltrated SiC/SiC Composites", S. Ramasamy, S. N. Tewari, K.N. Lee, R.T. Bhatt and D.S. Fox, Surface and Coatings Technology, 205 (2010) 3578-3581.
4."EBC Development for Hot-Pressed Y2O3/Al2O3 Doped Silicon Nitride Ceramics", S. Ramasamy, S. N. Tewari, K.N. Lee, R.T. Bhatt and D.S. Fox, Materials Science and Engineering A, 527 (2010) 5492-5498.
5."Slurry Based Multilayer Environmental Barrier Coatings for Silicon Carbide and Silicon Nitride Ceramics - I. Processing", S. Ramasamy, S. N. Tewari, K.N. Lee, R.T. Bhatt and D.S. Fox, Surface & Coatings Technology, 205 (2010) 258-265.
6."Slurry Based Multilayer Environmental Barrier Coatings for Silicon Carbide and Silicon Nitride Ceramics - II. Oxidation Resistance", S. Ramasamy, S. N. Tewari, K.N. Lee, R.T. Bhatt and D.S. Fox, Surface & Coatings Technology, 205 (2010) 266-270.
7."Effect of synthesis time and treatment on porosity of mesoporous silica materials", A. Ertan, P. Kodumuri, O. Talu and S.N. Tewari, Adsorption,.15 (2009) 81-86.
8."Electrodeposition of nickel nanowires and nanotubes using various templates", A. Ertan, S.N. Tewari and O. Talu, J Experimental Nanoscience, 3[4] (2008) 287-295.
9."Slurry development for the deposition of a GdSiO4+Mullite environmental barrier coating on silicon carbide", Guofeng Chen, Kang N. Lee and Surendra N. Tewari, J. Ceramic Processing Research, 8 (2007) 142-144.
10."The concept and development of emission spectroscopy for the non-destructive evaluation (NDE) of failure of thermal barrier coatings", Guofeng Chen, Kang N. Lee and Surendra N. Tewari, NDT & E International, 40 (2007) 265-270.
11. "Emission spectroscopy analysis for the non-destructive evaluation of the health of thermal barrier coatings", Guofeg Chen, Kang N. Lee and Surendra N. Tewari, J. Mater Sci, vol 41 (2006), pp. 6855-6860.
12. "Mushy Zone Characteristics and Macrosegregation during Directional Solidification",S.N. Ojha and S.N. Tewari, Trans. Indian Inst. Met., vol. 57[5], Oct. 2004, pp.475-483.
13."Structural Difference in the Cortical Bone of Turkey Tibia", Yu-Shuiuan, C. Ramachandra and S.N. Tewari, J. Materials Science, 39[1], (2004), pp. 207-214.
14."A Comparison Between Growth Morphology of ¿Eutectic¿ Cells/Dendrites and Single-Phase Cells/Dendrites",S. N. Tewari, S.V. Raj and I.E. Locci, Metallurgical and Materials Transactions A, 35A, (2004), 1632-1635.
15."Spectroscopic Non Destructive Evaluation of Environmental Barrier Coating Failure on Silicon-based Ceramics", C. Ramachandra, K.N. Lee, S.N. Tewari and W. DeGroot,  J. American Ceramic Society, vol. 87, (2004),  1117-1121.
16."Mushy Zone Rayleigh Number to Describe Macrosegregation and Channel Formation in Directionally Solidified Metallic Alloys", S.N. Tewari, R. Tiwari and G. Magadi, Metallurgical and Materials Transactions A, 35A, (2004), 2927-2934.
17."Durability of TBCs with a Surface Environmental Barrier Layer under Thermal Cycling in Air and in Molten Salt", C. Ramachandra, K.N. Lee and S.N. Tewari, Surface & Coatings Technology, 172 (2-3), (2003), 150-157.
18."A Mushy Zone Rayleigh Number to Describe Interdendritic Convection During Directional Solidification of Hypoeutectic Pb-Sb and Pb-Sn Alloys", S.N. Tewari and R. Tiwari,  Metallurgical and Materials Transactions A, 34A, (2003), 2365-2376.
19."Effect of Crucible Diameter Reduction on the Convection, Macrosegregation and Dendritic Morphology During Directional Solidification of Pb-2.2 wt pct Sb Alloy", Jun Chen, S.N. Tewari, G. Magadi and H.C. De Groh III, Metallurgical and Materials Transactions A¿, 34A[12], (2003), 2985-2990.
20."Directional Solidification and Convection  in Small Diameter Crucibles", J. Chen, P.K. Sung, S.N. Tewari, D.R. Poirier, and H. C. DeGgroh III,  Material Science and Engineering A, 357[1,2], (2003), 397-405.
21."History Dependence of Primary Dendrite Spacing during Directional Solidification of Metallic Alloys and Interdendritic Convection", Jun Hui, Y.S. Chen, X. Wu and S.N. Tewari, Journal of Crystal Growth, 253, (2003), 413-423.
22."The Effect of Convection on Disorder in Primary Cellular and Dendritic arrays", R. Trivedi, P. Mazumder and S.N. Tewari, Metallurgical and Materials Transactions A, 33A, (2002), 3763-3775.
23."Primary Dendrite Distribution and Disorder during Directional Solidification of Pb-Sb Alloys", Hui Chen, R. Tiwari, X. Wu, S.N. Tewari and R. Trivedi, Metallurgical and Materials Transactions A, 33A, (2002), 3499-3510.
24."Compressive Properties of Zone-Directionally Solidified Beta-NiAl and its Off-Eutectic Alloys with Cr and W", R. Asthana, R. Tiwari and S.N. Tewari, Materials Science and Engineering A, 336[1-2],(2002), pp. 99-109.
25."Dendritic Morphologies of Directionally Solidified Single Crystals along Different Crystallographic Orientations", G.L. Ding and S.N. Tewari, Journal of Crystal Growth, 236, (2002), pp. 420-428.
26."Cellular Array Morphology during Directional Solidification", S.N. Tewari, Y-Hsuan Weng, G.L. Ding and R. Trivedi, Metallurgical and Materialsl Transactioins A, 33A, (2002), pp. 1229-1243.
27."Reaction Bonded Silicon Carbide by Reactive Infiltration", P. Sangsuwan, J.A. Orejas, J.E. Gatica, S.N.Tewari and M.Singh, Ind. Eng. Chem.. Res., 40, (2001), pp. 5191-5198.
28."Wear and Friction Behavior of Pressure Infiltration Cast Copper-Carbon Composite", G. Goller, D. Koty and S.N. Tewari, M. Singh and A. Tekin, SCAND J METALL,  30[2], 2001 pp.77-83.
29."Effect of Growth Rate on macrosegregation during directional solidification of a Pb-Sb alloy", S.N. Ojha and S.N. tewari, Int. J. Cast Metals Res., 13, 2000, 207-213.
30. "Directional solidification microstructure in diffusive and convective regimes", R. Trivedi, H. Miyahara, P. Mazumder, E. Simsek and S.N. Tewari, Journal Crystal Growth, 222, (2000), 365-379.
31."Interface Response to Solidification in Sapphire-Reinforced Ni-Base Composites", R. Asthana and S.N. Tewari, Adv. Composite Mater., vol. 9 , No. 4, (2000), 265-308.
32."Mushy Zone Morphology during Directional Solidification of Pb-5.8 wt% Sb Alloy", L.Yu,, G. L.Ding, J. Reye, S.N. Ojha and S.N. Tewari, Metallurgical and Materials Transactions A, 31A, (2000), 2275-2283..
33.Y. He, K. N. Lee, R. A. Miller and S. N. Tewari, "Development of Refractory Silicate-YSZ Dual Layer TBCs," NASA TM-1999-209079; Journal of Thermal Spray technology, 9[1], (2000), 59-67.
34."Degradation of Aluminum Alloy-Carbon Composites due to Humidity", H. Song, S.N. Tewari and M. Singh, Journal of Materials Science Letters, 19, (2000), 209-211.
35."Cellular/Dendritic Array Tip Morphology during Directional Solidification of Pb-5.8 wt% Sb Alloy", L. Yu, G.L. Ding, J. Rye, S.N. Ojha and S.N. Tewari,  Metallurgical and Materials Transactions A, 30A, (1999), 2463-2472 .
36."Cell/Dendrite Distribution in Directionally Solidified Hypoeutectic Pb-Sb Alloys", S.P. Odell, G.L. Ding and S.N. Tewari, Metallurgical and Materials Transactions A, 30A, (1999), 2159-2165.
37."Macrosegregation Caused by Thermosolutal Convection During Directional Solidification of Pb-Sb Alloys", S.N. Ojha, G. Ding, Y.Lu, J. Rye and S.N. Tewari, Metallurgical and Materials Transactions A, 30A, (1999), 2167-2171.
38."Reactive Infiltration of Silicon Melt through Microporous Amorphous Carbon Preforms", P. Sangsuwan, S.N. Tewari, J.E. Gatica, M. Singh and R. Dickerson, Metallurgical and Materials Transactions B, 30B, (1999), 933-944.
39."Copper Alloy Impregnated Carbon-Carbon Hybrid Composites for Electronic Packaging Applications", S.K. Datta, S.N. Tewari, J.E. Gatica, W. Shih and L. Bentsen, Metallurgical and Materials Transactions A, 30A, (1999), 175- 181.
40."Strength Degradation of Sapphire Fibers during Pressure Infiltration Casting of Sapphire-Reinforced Ni-base Superalloys", R. Asthana, S.N. Tewari and S. Draper, Metallurgical and Materials Transactions-A, 29A, (1998), 1527-30.
41."Dynamic Analysis of Unidirectional Pressure Infiltration of Porous Preforms by Pure Metals", D.K. Biswas, J.E. Gatica and S.N. Tewari, Metallurgical and Materials Transactions A, 29A, (1998), 377-388.
42."Processing Effects on Interfacial Sliding of Debonded Fibers in a Sapphire-NiAl(Yb) Composite", R. Asthana and S.N. Tewari, J. Materials Sci. Lettters, 16, (1997), 406-411.
43."Permeability of Microporous Carbon Preforms", S.K. Datta, N. Simhai, S.N. Tewari, J.E. Gatica and M. Singh, Metallurgical and Materials Transactions A, 27A, (1996), 3669-3674.
44."Wear and Friction Behavior of Metal Impregnated Microporous Carbon Composites" Gultekin Goller, D.P. Koty, S.N. Tewari, M. Singh and A. Tekin, Metallurgical and Materials Transactions A, 27A, (1996), 3727-38.
45."Natural Convection during Directional Solidification of Pb-Sn Alloys", H. Song, S.N. Tewari and H. C. de Groh III, Metallurgical and Materials Transactions A, 27A, (1996), 1095-1110.
46."Time Dependence of Tip Morphology during Cellular/Dendritic Arrayed Growth", H. Song and S.N. Tewari, Metallurgical and Materials Transactions A, 27A, (1996), 1111-19.
47."Macrosegregation during Dendritic Arrayed Growth: Influence of Primary Arm Spacings and Mushy Zone Length", S.N. Tewari and R. Shah, Metallurgical Transactions A, 27A, (1996), 1353-1361.
48."Characterization of Microporous Preforms: Analysis of Permeability," N. Simhai, S.K. Datta, M. Singh, R. Dickerson, J. Smith, J.E. Gatica and S.N. Tewari,  Metallurgical Transactions A, 27A, pp. 3669-3674 (1996).
49. "Dynamic Analysis of Pressure Infiltration Processes", D.K. Biswas, J.E. Gatica and S.N. Tewari, Ceram. Trans., 58, (1995), 105-110, also published as "Dynamic Analysis of Pressure Infiltration Processes," High-Temperature Ceramic-Matrix Composites II: Manufacturing and Materials Development (Edited by A.G. Evans and R.Naslain, American Ceramic Society, Westerville, OH) Ceramic Transactions, 58, pp. 105-110 (1995).
50."Mechanical Properties of Extruded Dual-Phase NiAl Alloys", R. Tiwari, S.N. Tewari, R. Asthana and A. Garg, J. Materials Science, 30, (1995), 4861-4870.
51."Influence of Cr and W Alloying on the Fiber-Matrix Interfacial Shear Strength in Cast and Directionally Solidified Sapphire-NiAl Composites", R. Asthana, R. Tiwari and S.N. Tewari, Metallurgical and Materials Transactions A, 26A, (1995), 2175-2184.
52."Development of NiAl-Based Alloys: Effect of Chromium Addition", R. Tiwari, S.N. Tewari, R. Asthana and A. Garg,  Materials Science and Engineering, 192, (1995), 356-363.
53."Influence of Interfacial Reactions on the Fiber-Matrix Interfacial Shear Strength in Sapphire Fiber-Reinforced NiAl(Yb) Composite", S.N. Tewari, R. Asthana, R. Tiwari, R.R. Bowman and J. Smith, Metallurgical and Materials Transactions A ,26A, (1995), 477-491.
54."Influence of Fabrication Techniques on the Pushout Behavior of Sapphire Fibers in NiAl/Sapphire Composites", R. Asthana, S.N. Tewari and R.R. Bowman, Metallurgical and Materials Transactions A, 26A, (1995), 209-223.
55."Effect of Magnetic Field on the Microstructure and Macrosegregation in Directionally Solidified Pb-Sn Alloys", S.N. Tewari, R. Shah and H. Song, Metallurgical and Materials Transactions A, 25A, (1994), 1535-1544.
56."Interfacial Shear Strength of Cast and Directionally Solidified NiAl-Sapphire Fiber Composites", S.N. Tewari, R. Asthana and R.D. Noebe, Metallurgical and Materials Transactions A, 24A, (1993), 2119-2125.
57."Interfacial and Capillary Phenomena in Solidification Processing of Metal-Matrix Composites", R. Asthana and S.N. Tewari, Composites Manufacturing, 4, (1993), 3-25.
58."Thermosolutal Convection and Macrosegregation Caused by Solute Rejection at Cell/Dendrite Tips",  S.N. Tewari, R. Shah and M.A. Chopra, Metallurgical and Materials Transactions A, 24A, (1993), 1661-1669.
59."Review: The Engulfment of Foreign Particles by a Freezing Interface", R. Asthana and S.N. Tewari, Journal of Materials Science, 28, (1993), 5414-5425.
60."Second Phase Particle-Solidification Front Interactions: An Evaluation of Theoretical Models", R. Asthana and S.N. Tewari, in Processing of Advanced Materials, 3, (1993), 163-180.
61."Macrosegregation During Plane Front Directional Solidification of CsI-1wt% TlI Alloy", I.M.S. Sidawi and S.N. Tewari, Journal of Crystal Growth, 131, (1993), 230-238.
62."Macrosegregation During Steady State Arrayed Growth of Dendrites in Directionally Solidified Pb-Sn Alloys", S.N. Tewari and R. Shah, Metallurgical Transactions A, 23A, (1992), 3383-3392.
63."Infiltration Processing of Metal Matrix Composites: A Review", R. Asthana, P.K. Rohatgi and S.N. Tewari, Processing of Advanced Materials,2, (1992), 1-17.
64."Microstructures Resulting from Solidification of Undercooled Ni-31% Mo", S.N. Tewari, J. Materials Science Letters,11, (1992), 1020-1022.
65."Break-Down of a Planar Liquid-Solid Interface During Directional Solidification: Influence of Convection", S.N. Tewari and M.A. Chopra, Journal of Crystal Growth, 118, (1992), 183-192.
66."Shape Selection Criterion for Cellular Array during Constrained Growth of Binary Alloys: Need for Low Gravity Experiment", S.N. Tewari and R. Trivedi, Microgravity Science and Technology, 4, (1991), 240-244.
67."Room Temperature Wear Behavior of Alumina Particle Reinforced Aluminum Alloy Composite", A.R. Nesarikar, S.N. Tewari and E.E. Graham, Materials Science and Engineering A, A147, (1991), 191-199.
68."Growth Speed Dependence of Primary Arm Spacings in Directionally Solidified Pb-10 wt% Sn", M.A. Chopra and S.N. Tewari, Metallurgical Transactions A, 22A, (1991), 2467-2474.
69."Solutal Partition Coefficients in Nickel Based Superalloy, PWA 1480", S.N. Tewari, M. Vijayakumar, J.E. Lee and P.A. Curreri, Materials Science and Engineering A, A141, (1991), 97-102.
70."Dendrite Spacings in Directionally Solidified Superalloy, PWA 1480", M.Vijayakumar, S.N. Tewari, J.E. Lee and P.A. Curreri, Materials Science and Engineering, A132, (1991),195-201.
71."Effect of Thermosolutal Convection on the Solid liquid Interface in Pb Au Alloys", S.N. Tewari and M.A. Chopra, Microgravity Science and Technology, III, (1990), 99-106.
72."Dendrite Tip Radii in Directionally Solidified Pb 8.4 at% Au", S.N. Tewari, Materials Science and Engineering, A130, (1990), 219-229.
73. "Effect of Minor Chemistry Variations on the Structural and Mechanical Behavior of a PM Nickel-Base Superalloy", K.K. Sharma, P.S. Mishra, D. Banerjee, S.N. Tewari and N.C. Birla, Solid State Phenomena, vols. 8 & 9, (1989), 347-60 or Diffus. Defect Data, Pt B, B8-9 (Sintering Multiphase Met.Ceram. Syst.), (1990), 347-60.
74."Side-Branch Morphology and Coarsening in Directionally Solidified Pb 8.4 at% Au", S.N. Tewari, V.V. Nesariker and David Lee, Metallurgical Transactions A, 20A, (1989), 1889-1893.
75."Microstructure and Nucleation Behavior of Lead Particles in Rapidly Quenched Immiscible Alloys", S.N. Tewari, J. Materials Science Letters, 8, (1989), 1098-1100.
76."Effect of Reverse aging Treatment on the Microstructure and Mechanical Properties of Nimonic Alloys", K.K. Sharma, D. Banerjee and S.N. Tewari, Materials Science and Engineering, A104, (1988), 131-140.
77."Effect of Process Parameters on Melt spun Ag Cu", D.J. Thoma, T.K. Glasgow, S.N. Tewari, J.H. Perepezko and N. Jayaraman, Materials Science and Engineering, 98, (1988), 88-93.
78."Effect of Consolidation temperature and Boron Addition on the Microstructure and Mechanical Properties of a Hot Isostatically Pressed P.M. Superalloy Based on ZHS6 K", K.K. Sharma, S.N. Tewari, N.C. Birla and P.S. Misra, Powder Metallurgy, 31[1], (1988),52- 62.
79."A Low Cobalt Powder Metallurgy Superalloy", K.K. Sharma and S.N. Tewari, International Journal of Powder Metallurgy,24[1], (1988), 13-28.
80."Effect of Melt Spinning on Grain Size and Texture in Ni Mo Alloys", S.N. Tewari, Metallurgical Transactions A, 19A, (1988), 1711-1719.
81."Microsegregation in Directionally Solidified Pb 8.4 at% Au Alloy", S.N. Tewari, Metallurgical Transactions A, 19A, (1988), 1351-1363.
82."Cellular Microstructure of Chill Block Melt Spun Ni Mo Alloys", S.N. Tewari and T.K. Glasgow, Metallurgical Transactions A, 18A, (1987), 1663-1678.
83."Effect of Heat Treatment on the Fracture Behavior of DS gamma/gamma-primeAlloy", A.M. Sriramamurty and S.N. Tewari, Journal of Materials Science Letters, 6, (1987), 373-376.
84."A Critical Examination of the Dendrite Growth Models: Comparison of Theory with Experimental Data", S.N. Tewari and V. Laxmanan, Acta Metallurgica, 35, (1987), 175-183.
85."Cellular Dendritic Transition in Directionally Solidified Binary Alloys", S.N. Tewari and V. Laxmanan, Metallurgical Transactions, 18A, (1987), 167-170.
86."Effect of Undercooling on the Microstructure of Ni 35% Mo (Eutectic) and Ni 38% Mo (Hypereutectic) Alloys", S.N.Tewari, Metallurgical Transactions, 18A, (1987), 525-542.
87."Fault Structures in Rapidly Quenched Ni Mo Binary Alloys", N. Jayaraman and S.N. Tewari, Metallurgical Transactions, 17A, (1986), 2291-2294.
88."Dendrite Characteristics in Directionally Solidified Pb 8% Au and Pb 3% Pd Alloys", S.N. Tewari, Metallurgical Transactions, 17A, (1986), 2279-90.
89."Mechanical Property Anisotropy in Superalloy EI 929: Directionally Solidified by Exothermic Technique", D.C. Pradhan, K.K. Sharma and S.N. Tewari, Journal of Materials Science, 21, (1986), 2871-2875.
90."Dendritic Microstructure in Argon Atomized Superalloy Powders", S.N. Tewari  and Mahendra Kumar, Metallurgical Transactions, 17A, (1986), 2099-2102.
91."Deformation  and Fracture Behavior of Ni Mo Al In Situ Composite", A.M. Sriramamurty and S.N. Tewari, Metallurgical Transactions, 15A, (1984), 1905-1919.
92."Performance Assessment of Exothermic Compounds for Directional Solidification", D.C. Pradhan, S.N. Tewari and M.L. Bhatia, Transactions of Indian Institute of Metals, 37, (1984), 206-213.
93."Precipitation in Ni Mo Al In Situ Composite", A.M. Sriramamurty, D. Banerjee and S.N. Tewari, Scripta Metallurgica, 17[9], (1983), 1049-1052.
94."A High Performance Wrought Nickel Base Superalloy, EI 929", K.K. Sharma and S.N. Tewari, Journal of Materials Science, 18, (1983), 2915-1922.
95."Soviet Superalloy ZHS6 K, Effect of B/C Modification", S.N. Tewari and M. Hemareddy, Journal Of Materials Science, 18, (1983), 1155-1164.
96."Investment Casting and Directional Solidification of Superalloy Components", S.N. Tewari, Transactions of Indian Institute of Metals, 36[1], (1983), 1-10.
97."Interfacial Structure in DS r/r'-d Eutectic Superalloy", A.M. Sriramamurty, D. Banerjee and S.N. Tewari, Acta Metallurgica, 30, (1982), 1231-1242.
98."Diffusivity of Carbon in Iron  Vanadium Alloys", S.N. Tewari and J.R. Cost, Journal Of Materials Science, 17[6], (1982), 1639 1648.
99."Directionally Solidified Soviet Superalloy, ZHS6 K", S.N. Tewari, Journal of Materials Science, 16[8], (1981), 2193-2197.
100."Directionally Solidified Nimocast 90", D.C. Pradhan, S.N.Tewari and M.L. Bhatia, Transactions of Indian Institute of Metals, 34[3], (1981), 215 221.
101."Dendrite Spacing in a Directionally Solidified Superalloy", S.N. Tewari and A.M. Sriramamurty, Metallurgical Transactions, 12A, (1981), 137-138.
102."Growth Crystallography of DS Fe Cb Ni Eutectic Alloy", S.N. Tewari, Metallography, 13, (1980), 379-381.
103."Superalloy IN 100, Investment-Cast and Directionally Solidified", S.N. Tewari and A.M. Sriramamurty, Transactions of Indian Institute of Metals, 33[6], (1980), 456-466.