Sharma S.,Indian Institute of Technology Roorkee |
Advanced Materials Research | Year: 2012
A new processing concept has been developed to produce nanostructured metal matrix composite coatings. Electroless coatings of Ni-P and composite Ni-P-ZnO were developed by codeposition process on mild steel substrates. Ni-P-ZnO coatings were prepared using conventional route i.e., ZnO particles of ~ 20 μm with average diameter were added to the bath (90°C, pH ~9.0) and kept in suspension by stirring. Uniform and grayish bright coatings were observed. The coatings were heat treated at 400°C for 1h in argon atmosphere to attain crystalline nature of coating. The as-synthesized and heat treated Ni-P and composite Ni-P-ZnO coatings were characterized by XRD, FESEM and AFM. © (2012) Trans Tech Publications, Switzerland.
News Article | April 2, 2016
The southern Indian state of Kerala has finally joined the bandwagon of Indian states launching massive solar power tenders. The Kerala State Electricity Board has floated a tender for 200 MW of solar power capacity. Bidders will be able to submit bids for project capacities between 10 MW and 200 MW. The benchmark tariff has been set at Rs 7.04/kWh (US¢11.0/kWh), which is significantly higher than the lowest-ever tariff of Rs 4.34/kWh (US¢6.5/kWh) realized in an auction few months back. According to media reports, tariff bids for this tender are expected to be higher than the recent ones due to several reasons. The project developers will be required to identify and acquire land on their own. Bank guarantees and bid bond amounts to be submitted by the bidders are also higher than other recent tenders. Nevertheless, healthy response to the tender can be expected, as Kerala enjoys substantial solar radiation resources. The state has not seen any major capacity addition since the launch of the National Solar Mission in 2010. By the end of February 2016, only 12 MW of capacity had been commissioned in the state, none of which was achieved in the current financial year of 2015-16. The Indian government recently increased the solar power procurement obligation from 3% by 2022 to 8% by 2022. To achieve this target, Kerala needs to have an installed solar power capacity of 1,429 MW by 2022. While this is the first major solar power tender announced in the state, at least one public sector company had previously announced plans to set up a utility-scale solar power plant in the state. THDC Limited, a government-owned company that operates large hydro power projects in north India, has stated plans to set up 50 MW capacity through Solar Energy Corporation of India. Reprinted with permission. Get CleanTechnica’s 1st (completely free) electric car report → “Electric Cars: What Early Adopters & First Followers Want.” Come attend CleanTechnica’s 1st “Cleantech Revolution Tour” event → in Berlin, Germany, April 9–10. Keep up to date with all the hottest cleantech news by subscribing to our (free) cleantech newsletter, or keep an eye on sector-specific news by getting our (also free) solar energy newsletter, electric vehicle newsletter, or wind energy newsletter.
Sharma A.,Graphic Era University |
Sharma S.,Graphic Era University |
Journal of Materials and Environmental Science | Year: 2013
In the Pulp and Paper mill Industry, Digester house is the main section and corrosion is a big problem in this section. The presence of sulfate, sulfide, and chloride in liquor and Silicone in steel produce the severe corrosion problem in digester. An In plant test of six month duration was done in the bottom part of a batch digester, made of mild steel of volume 85m3. The wood chips are filled in the digester and cooking liquor is then charged keeping liquor to wood ratio as 1:2.8. Volume of cooking liquor inside the digester was kept between 37 to 42 m3.The cooking liquor consists of mainly sodium hydroxide (NaOH) (92 gpl as NaOH) and sodium sulfide (Na2S) (22.4 gpl as NaOH) having pH ~13.2. Maximum temperature attained during the pulping process is 168°C and it operates at a pressure of 6.2 Kg/Cm2.The results showed that mild steel (MS) experiences highest corrosion rate while Duplex stainless steels experienced least corrosion rate. It is concluded that the bottom part of the digester is affected due to erosion as well as localized assisted corrosion and the bottom part can be constructed of duplex stainless steel without severe risk of corrosion.
Sharma S.,Graphic Era University |
Saini C.K.,Graphic Era University |
Journal of Materials and Environmental Science | Year: 2014
The aim of present study is to develop electroless coatings of Ni-P and composite Ni-P-ZnO by co-deposition process on transparent non-conductive soda lime glass substrates. Ni-P-ZnO coatings were prepared using conventional route i.e., ZnO particles of ~ 20 μm with average diameter were added to the bath (90°C, pH ~9.0) and kept in suspension by stirring. Uniform and greyish bright coatings were observed. The coatings were heat treated at 400 °C for 1h in argon atmosphere to attain crystalline nature of coating. The as-synthesized Ni-P and composite Ni-P-ZnO coatings were characterized by FESEM/EDAX.