specific surface area of powder

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• Specific surface area — is a material property of solids which measures the total surface area per unit of mass [http://goldbook.c60.kiev.ua/S05806.pdf IUPAC Compendium of Chemical Terminology 2nd Edition (1997)] , solid or bulk volume… …   Wikipedia

• Surface area — is the measure of how much exposed area an object has. It is expressed in square units. If an object has flat faces, its surface area can be calculated by adding together the areas of its faces. Even objects with smooth surfaces, such as spheres …   Wikipedia

• specific surface — noun : the ratio of the total surface of a substance (as an adsorbent) to its volume : surface area (as of a finely divided powder) per unit mass …   Useful english dictionary

• Air permeability specific surface — The air permeability specific surface of a powder material is a single parameter measurement of the fineness of the powder. The specific surface is derived from the resistance to flow of air (or some other gas) through a porous bed of the powder …   Wikipedia

• Powder metallurgy — is the process of blending fine powdered materials, pressing them into a desired shape (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering). The powder metallurgy process generally… …   Wikipedia

• Powder glass beads — The earliest powder glass beads on record were discovered during archaeological excavations at Mapungubwe, in present day Zimbabwe, and dated to 970 1000 CE. In our time, the main area of powder glass bead manufacture is West Africa, most… …   Wikipedia

• Smokeless powder — is the name given to a number of propellants used in firearms and artillery which produce negligible smoke when fired, unlike the older gunpowder (black powder) which they replaced. The basis of the term smokeless is that the combustion products… …   Wikipedia

• surface coating — ▪ chemistry Introduction       any mixture of film forming materials plus pigments, solvents, and other additives, which, when applied to a surface and cured or dried, yields a thin film that is functional and often decorative. Surface coatings… …   Universalium

• Powder-actuated tool — A Powder actuated tool (often called Hilti guns or Ramset guns after two of the companies who manufacture the tools) is a nail gun used in the construction and manufacturing industries to join materials to hard substrates like steel and concrete …   Wikipedia

• Mars surface color — Rock strewn surface imaged by Mars Pathfinder The apparent color of the Martian surface enabled humans to distinguish it from other planets early in human history and motivated them to weave fables of war in association with Mars. One of its… …   Wikipedia

• Electric double-layer capacitor — Maxwell Technologies MC and BC series supercapacitors (up to 3000 farad capacitance) An electric double layer capacitor (EDLC), also known as supercapacitor, supercondenser, electrochemical double layer capacitor, or ultracapacitor, is an… …   Wikipedia