Search Results - "Purandare, Y."

Effect of chamber pressure on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings by Biswas, Barnali, Purandare, Y., Sugumaran, A., Khan, Imran, Hovsepian, Papken Eh

“…It has been reported that compared to state-of-the-art technologies, High Power Impulse Magnetron Sputtering produces very dense and droplet free coatings due…”
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A novel plasma nitriding process utilising HIPIMS discharge for enhanced tribological and barrier properties of medical grade alloy surfaces by Hovsepian, P., Shukla, K., Sugumaran, A., Purandare, Y., Khan, I., Ehiasarian, A.

“…•A novel high rate plasma nitriding technology of CoCrMo alloy using HIPIMS.•Enhanced tribological performance of nitrided layer.•Enhanced fracture toughness…”
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Investigation of High Power Impulse Magnetron Sputtering deposited nanoscale CrN/NbN multilayer coating for tribocorrosion resistance by Purandare, Y.P., Robinson, G.L., Ehiasarian, A.P., Hovsepian, P. Eh

“…Recycling equipment (waste/sea water/chemicals) need high tribocorrosion resistance. In this work High Power Impulse Magnetron Sputtering technique deposited…”
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Novel HIPIMS deposited nanostructured CrN/NbN coatings for environmental protection of steam turbine components by Hovsepian, P. Eh, Ehiasarian, A.P., Purandare, Y.P., Mayr, P., Abstoss, K.G., Mosquera Feijoo, M., Schulz, W., Kranzmann, A., Lasanta, M.I., Trujillo, J.P.

“…To increase efficiency, modern steam plants are pushing their operational regime from super-critical (600 °C/300 bar) to ultra-super-critical…”
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Improving tribocorrosion resistance of a medical grade CoCrMo alloy by the novel HIPIMS nitriding technique by Purandare, Y., Shukla, K., Sugumaran, A., Ehiasarian, A., Khan, I., Hovsepian, P.

“…In this work, tribocorrosion performance of the High Power Impulse Magnetron Sputtering (HIPIMS) nitrided (F75) CoCrMo alloys was examined with the help of…”
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CrN/NbN coatings deposited by HIPIMS: A preliminary study of erosion–corrosion performance by Purandare, Y.P., Ehiasarian, A.P., Stack, M.M., Hovsepian, P.Eh

“…Nanoscale CrN/NbN multilayer PVD coatings have exhibited resistance to erosion–corrosion. However growth defects (under dense structures and droplets) in the…”
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Tribological and oxidation behaviour of TiAlCN/VCN nanoscale multilayer coating deposited by the combined HIPIMS/(HIPIMS-UBM) technique by Kamath, G., Ehiasarian, A.P., Purandare, Y., Hovsepian, P.Eh

“…A TiAlCN/VCN nanostructured multilayer coating with a bi-layer thickness of 2.2 nm and a total thickness of 2.6 μm was deposited by mixed High Power Impulse…”
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Cavitation erosion performance of CrAlYN/CrN nanoscale multilayer coatings deposited on Ti6Al4V by HIPIMS by Ma, D., Harvey, T.J., Wellman, R.G., Ehiasarian, A.P., Hovsepian, P. Eh, Sugumaran, A.A., Purandare, Y.P., Wood, R.J.K.

“…Water droplet erosion (WDE) protection of Ti6Al4V turbofan blades is of paramount importance to the aviation industry. A novel CrAlYN/CrN nanoscale multilayer…”
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Long-term behaviour of Nb and Cr nitrides nanostructured coatings under steam at 650 °C. Mechanistic considerations by Agüero, A., Juez-Lorenzo, M., Hovsepian, P. Eh, Ehiasarian, A.P., Purandare, Y.P., Muelas, R.

“…There is an increasing demand for steam power plants to operate in super-critical conditions i.e. temperatures in excess of 600 °C. Under these conditions…”
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Velocity effects on erosion–corrosion of CrN/NbN “superlattice” PVD coatings by Purandare, Y.P., Stack, M.M., Hovsepian, P.Eh

“…Erosion–corrosion or tribo-corrosion poses a threat to materials which are subjected to conditions involving corrosive slurries. Industries suffering from…”
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A study of the erosion–corrosion of PVD CrN/NbN superlattice coatings in aqueous slurries by Purandare, Y., Stack, M.M., Hovsepian, P.

“…New generation PVD coatings include advanced “superlattice” structures in which the combination of tribological and corrosion properties may optimized. Such…”
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Impact angle effects on the erosion–corrosion of superlattice CrN/NbN PVD coatings by Stack, M.M., Purandare, Y., Hovsepian, P.

“…Wastage due to the combined effects of erosion and corrosion is a serious issue in a wide range of industrial environments. The extent of wastage is dependent…”
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Preliminary investigation of slurry erosion behaviour of tantalum by Chouhan, J.S., Jana, B.D., Purandare, Y.P., Dey, A., Hovsepian, P. Eh, Jenkins, D., Jones, L.

“…Frequent premature failure of the ISIS spallation neutron source target prompted the investigation of previously unexplored aqueous slurry erosion response of…”
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Investigation of aqueous slurry erosion-corrosion behaviour of Tantalum in different pH solutions by Chouhan, J.S., Purandare, Y.P., Jana, B.D., Dey, A., Hovsepian, P.Eh, Jenkins, D., Jones, L.

“…Erosion-corrosion behaviour of pure Tantalum (Ta) was investigated using corrosive slurry solutions (pH 4, 7, and 10) containing 7 wt% SiC as erodent…”
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Deposition of nanoscale multilayer CrN/NbN physical vapor deposition coatings by high power impulse magnetron sputtering by Purandare, Y. P., Ehiasarian, A. P., Hovsepian, P. Eh

“…Nanoscale multilayer CrN/NbN physical vapor deposition (PVD) coatings are gaining reputation for their high corrosion and wear resistance. However, the CrN/NbN…”
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Performance of HIPIMS deposited CrN/NbN nanostructured coatings exposed to 650 °C in pure steam environment by Hovsepian, P. Eh, Ehiasarian, A.P., Purandare, Y.P., Biswas, B., Pérez, F.J., Lasanta, M.I., de Miguel, M.T., Illana, A., Juez-Lorenzo, M., Muelas, R., Agüero, A.

“…In the current work, 4 μm thick CrN/NbN coating utilising nanoscale multilayer structure with bi-layer thickness of Δ = 2.9 nm has been used to protect 9 wt%…”
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Structure and properties of ZrN coatings deposited by high power impulse magnetron sputtering technology by Purandare, Y. P., Ehiasarian, A. P., Hovsepian, P. Eh

“…Monolayer ZrN coatings were deposited exclusively by the novel high power impulse magnetron sputtering (HIPIMS) technology in an industrial scale physical…”
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Performance of HIPIMS deposited CrN/NbN nanostructured coatings exposed to 650 degree C in pure steam environment by Hovsepian, PEh, Ehiasarian, A P, Purandare, Y P, Biswas, B, Perez, F J, Lasanta, MI, de Miguel, MT, Illana, A, Juez-Lorenzo, M, Muelas, R, Agueero, A

“…In the current work, 4 mu m thick CrN/NbN coating utilising nanoscale multilayer structure with bi-layer thickness of Delta = 2.9 nm has been used to protect 9…”
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Impact angle effects on the erosion-corrosion of superlattice CrN/NbN PVD coatings by STACK, M. M, PURANDARE, Y, HOVSEPIAN, P

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Decimal time units proposed by Purandare, Yeshwant K

“…Proposes that the United States adopt a decimal system of time…”
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