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Patcha Ramachandra Rao

Patcha Ramachandra Rao, Indian metallurgist (Kavutavaram, Andhra Pradesh 21 March 1942 – Madurai, Coimbatore 10 January 2010)

Expert on physical metallurgy and materials science

Authored over 230 research papers


Discovered novel intermetallic phases and phases with 5-fold rotational symmetry

Discovered a new class of quasicrystals in magnesium alloys

Proposed a standard expression of free energy of the undercooled liquid for thermodynamic treatment of under cooled liquids 

Successfully synthesized calcium carmonate, calcium hydroxyl apatite and some nanocrystals through biomimetics

Developed a number of innovative techniques for the preparation, characterization and modeling of metastable products including the first ever predesigned quasicrystalline alloy

With G.V.S. Sastry blazed a new path in the synthesis of quasicrystals

Held 20 patents   

PATENTS (incomplete list)

With A. Agrawal, I. Chattoraj & G.V. Kumar Puvvada. Process for recover of gallium (2002)

With S. Das, V. Rao, A. Sinha, J. Chakraborty & S.K. Das. Process for the preparation of nanosized iron oxide by biomimetic route (2002)

With A. Agarwal, S. Nayar, A. Sinha & V. Rao. A process for the preparation of nanosized hydroxyapatite (2002) 

With S. Das, S.K. Mishra & R.P. Goel. Process for the production of zirconium boride powder (1997)

With D.K. Biswas, K.K. Mishra, B.K. Mitra, S.D. Singh & K.K. Singh. A composition for the preparation of refractory useful for oil/gas based melting furnaces (1997)

With V. Rao & A. Sinha. Process for the production of neodymium-iron-boron-permanent magnet alloy powder (1994)