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TaC x powders of desired composition are prepared by heating a mixture of tantalum and graphite powders in vacuum or inert-gas atmosphere ().The heating is performed at a temperature of about 2,000 °C (2,270 K; 3,630 °F) using a furnace or an arc-melting setup.
Dome coated with DLC for optical and tribological purposes. A ta-C thin film on silicon (15 mm diameter) exhibiting regions of 40 nm and 80 nm thickness. A Co-alloy valve part from a producing oil well (30 mm diameter), coated on the right side with ta-C, in order to test for added resistance to chemical and abrasive degradation in the working environment.
Diamond and graphite materials and structure. Diamond is an allotrope of carbon where the atoms are arranged in a modified version of face-centered cubic (fcc) structure known as "diamond cubic". It is known for its hardness (see table above) and incompressibility and is targeted for some potential optical and electrical applications.
Graphited Wood Grease 1908 ad in the Electric Railway Review. The beginnings of the revolutionary froth flotation process are associated with graphite mining. Included in the E&MJ article on the Dixon Crucible Company is a sketch of the "floating tanks" used in the age-old process of extracting graphite. Because graphite is so light, the mix of ...
Aquadag is a trade name for a water-based colloidal graphite coating commonly used in cathode ray tubes (CRTs). It is manufactured by Acheson Industries, a subsidiary of ICI. The name is a shortened form of "Aqueous Deflocculated Acheson Graphite", [1] but has become a generic term for conductive graphite coatings used in vacuum tubes. Other ...
Ultra-high-temperature ceramics (UHTCs) are a type of refractory ceramics that can withstand extremely high temperatures without degrading, often above 2,000 °C. [1] They also often have high thermal conductivities and are highly resistant to thermal shock, meaning they can withstand sudden and extreme changes in temperature without cracking or breaking.
Initial production had an orange color, but graphite coating gave later production a black color. Production was discontinued after World War II. [22] Unique is a gray flake powder introduced by Laflin & Rand in 1900. [22] Individual flakes are approximately 1.5 mm (0.06 inch) in diameter. [24] It is designed for shotguns and can be used in ...
Carbide-derived carbon (CDC), also known as tunable nanoporous carbon, is the common term for carbon materials derived from carbide precursors, such as binary (e.g. SiC, TiC), or ternary carbides, also known as MAX phases (e.g., Ti 2 AlC, Ti 3 SiC 2).