Process for Producing Graphite Fiber/Aluminum-Magnesium Matrix Composites. (1998)
Divecha,Amarnath P., Karmarkar,Subhash D., Foltz,John V.
The present invention relates generally to, an improved composite material comprised of a graphite fiber/aluminum matrix composite. The graphite fiber/aluminum matrix composites of this invention...
Diffusion Bonding Process for Aluminum and Aluminum Alloys. (1998)
Ferrando, William A., Divechi, Amarnath P., Karmarkar, Subhash D.
A method of forming diffusion bonds between aluminum and aluminum alloy surfaces by coating the surfaces with molten AgNO3 and then decomposing the AgNO3 to form a thin uniform layer of silver on the...
Method of Soldering Aluminum. (1998)
Divecha, Amarnath P., Ferrando, William A., Hesse, Philip W., Karmarkar, Subhash D.
An aluminum or aluminum alloy surface is coated with molten AgNO3, the silver nitrate is decomposed (at about 450 C-550 C) leaving a thin layer of silver metal, and then an inter-diffusion layer of...
Centrifugal Casting of Composites. (1998)
Karmarkar, Subhash D., Divecha, Amarnath P.
This patent discloses tubes or other symmetrical shapes are formed of composite materials, such as silicon carbide and aluminum, by spin casting. The reinforcing material can be precast into a billet...
Process for Producing Uniform Protective Coating of Silver Metal on Carbon/Carbon Composites. (1998)
Divecha, Amarnath P., Ferrando, William A., Hesse, Philip W., Karmarkar, Subhash D.
This patent discloses a process for producing high temperature, oxidation resistant silver metal coatings on carbon/carbon composite structures by coating the carbon/carbon surfaces with molten...
Techniques For Preparation of Ingot Metallurgical Discontinuous Composites. (1998)
Divecha, Amarnath P., Karmarkar, Subhash D., Ferrando, William A., Hoover, Scott M., Kerr, James M.
Process for the production of ingots of castable discontinuous metal matrix composites by encapsulating particulate refractory material of the B4C or SiC in a matrix metal of Li or Al to form a solid...
Microstructurally Toughened Articles and Casting Thereof. (1998)
Divecha, Amarnath P., Karmarkar, Subhash D., Hesse, Philip, Brouchy, W.
The present invention relates in general to articles reinforced with discontinuous composites and the like, and a process of making the same. In particular, the invention relates to the use of...
Method of Bonding Molybdenum to Steel. (1998)
Ferrando, William A., Karmarkar, Subhash D., Hoover, Scott M., Divecha, Amarnath P.
A thin layer of silver metal is formed between a molybdenum surface and a steel surface. The silver metal layer is diffusion bonded to the molybdenum surface and diffusion bonded to the steel...
Centrifugal Casting of Reinforced Articles. (1998)
Diyecha, Amarnath P., Karmarkar, Subhash D., Ferrando, William A., Hoover, Scott M.
A reinforcement made of a composite material is positioned inside of a centrifugal casting mold. Molten matrix metal is then introduced into the mold while being rotated about its longitudinal axis...
Method of Centrifugally Casting Reinforced Composite Articles. (1998)
Divecha, Amarnath P., Karmarkar, Subhash D., Ferrando, William A., Hoover, Scott M.
The article is produced by prepositioning nonwoven reinforcement made of a metallic mesh to which ceramic tiles are wired inside of a centrifugal casting mold. Molten matrix metal is then introduced...
Divecha, Amarnath P., Karmarkar, Subhash D., Hoover, Scott M., Kerr, James M., Ferrando, William A.
A process for forming pressure cast alumina tile reinforced aluminum alloy armor in which a silver coated aluminum disc is first inserted into a mold assembly, the mold assembly includes a base...