Titanium carbide particles as pre-solar grains

Silicon Carbide in Comet Wild 2 & the Abundance of Pre-solar Grains in the Kuiper Belt

Introduction: One of the most remarkable findings from of the study of comet samples returned by the Stardust mission is the apparent scarcity of pre-solar grains. Unlike common expectations, the abundance of pre-solar grains in comet Wild 2 appears to be less than in primitive meteorites, micrometeorites and IDPs. The best measurements of the abundances of isotopically anomalous pre-solar grai...

What can pre-solar grains tell us about AGB stars?

The vast majority of pre-solar grains recovered to date show the signature of an origin in asymptotic giant branch (AGB) stars. In AGB stars, the abundances of elements lighter than silicon and heavier than iron are largely affected by protonand neutron-capture processes, respectively, while the compositions of the elements in between also carry the signature of the initial composition of the s...

Production of Titanium Carbide via Mechanochemical Process

Production of Titanium Carbide via Mechanochemical Process

Laser Nitriding Method of Making Phosphor Bronze with Surface-embedded Titanium Carbide Particles

(72) Inventors: BEKIR SAMI YILBAS, DHAHRAN (57) ABSTRACT (SA); SOHAIL AKHTAR, DHAHRAN (SA); CIHAN KARATAS’ ANKARA The laser nitriding method of making phosphor bronze with (TR); CHRIS CHATWIN’ BRIGHTON surface-embedded titanium carbide particles involves coating (GB) a cleaned phosphor bronze workpiece with a thin ?lm formed (73) Assignee: KING FAHD UNIVERSITY OF of a carbonaceous layer mixed w...