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3篇 您的检索式:作者名="Krishnamurthy N."
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1Gas solid techniques for preparation of pure lanthanum hexaboride显示文摘The processes reported for the preparation of lanthanum hexaboride (LaB6) from lanthanum oxide involve the use of carbon either elemental or in the form of boron carbide or elemental boron itself as reducing agents, fused salts at high temperatures or reactions which require the product boride to be leached out. Each of these techniques either increases the process costs and/or increases chances of contamination in fi-nal product. Pure LaB6 can best be prepared by a reaction which produces a gaseous byproduct. In the present study, such a reaction was successfully used to yield pure lanthanum hexaboride. The process involved mixing of anhydrous lanthanum chloride with aluminium and boron and heating the charges under dynamic argon flow. Lanthanum chloride is known to be highly hygroscopic; hence the process using improperly dehydrated LaCl3 led to the formation of lanthanum oxychloride which does not convert to LaB6 under conditions wherein LaCl3 converts. Not only the formation of AlCl3 but also its continuous removal from the reaction zone is necessary for the success of the process.Mukherjee A. Gulnar A.K. Sahoo D.K. Krishnamurthy N. 2012Rare Metals2012,31,3:2
2Passivation of microbial corrosion using a graphene coating显示文摘A. Krishnamurthy V. Gadhamshetty R. Mukherjee Z. Chen W. Ren H-M. Cheng N. Koratkar 2013Carbon2013,,:1
3Process forces during friction stir channeling in an aluminum alloy显示文摘N. Balasubramanian R.S. Mishra K. Krishnamurthy 2010Journal of Materials Processing Tech2010,,2:1
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