powder steel
81Brazing — This article is about the metal joining process. For the cooking technique, see braising. Brazing practice Brazing is a metal joining process whereby a filler metal is heated above and distributed between two or more close fitting parts by… …
82Glass ionomer cement — A Glass Ionomer Cement (GIC) is one of a class of materials commonly used in dentistry as filling materials and luting cements. These materials are based on the reaction of silicate glass powder and polyalkeonic acid. These tooth coloured… …
83Vanadium — (IPAEng|vəˈneɪdiəm) is a chemical element that has the symbol V and atomic number 23. A soft and ductile element, vanadium naturally occurs in about 65 different minerals and is used mainly to produce certain alloys. It is one of the 596 elements …
84Wheellock — Wheellock, wheel lock or wheel lock, is a mechanism for firing a firearm. It was the next major development in firearms technology after the matchlock and the first self igniting firearm. The mechanism is so called because it uses a rotating… …
85Synthetic diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique Synthetic diamond is diamond produced in a technological process; as opposed to natural diamond, which is created in geological processes. Synthetic… …
86Raritan River Railroad — infobox SG rail railroad name=Raritan River Railroad logo filename=Raritan River RR logo.png logo size=100 marks=RR locale=Central New Jersey start year=1888 end year=1980 hq city=South Amboy, New JerseyThe Raritan River Rail Road (RRRR) was a… …
87Silicon nitride — Preferred IUPAC name Silicon nitride …
88tungsten processing — Introduction preparation of the ore for use in various products. Tungsten exhibits a body centred cubic (bcc) crystal lattice. It has the highest melting point of all metals, 3,410° C (6,170° F), and it has high conductivity for… …
89Antique gun — An antique firearm is, loosely speaking, a firearm designed and manufactured prior to the beginning of the 20th century. The Boer War is often used as a cut off event, although the exact definition of what constitutes an antique firearm varies… …
90Technetium — molybdenum ← technetium → ruthenium Mn ↑ Tc ↓ Re …
