low-melting-temperature alloy
71Induction brazing — This article has elements of an advertisement for specific vendors! It needs to be checked as a commercial submissionBrazing is when two or more unlike materials are joined together by a filler metal that has a lower melting point. Many heat… …
72Berlin Gold Hat — The Berlin Gold Hat or Berlin Golden Hat () is a Late Bronze Age artefact made of thin gold leaf. It served as the external covering on a long conical brimmed headdress, probably of an organic material. The Berlin Gold Hat is the best preserved… …
73zinc — zincky, zincy, zinky, adj. zincoid, adj. /zingk/, n., v., zincked or zinced /zingkt/, zincking or zincing /zing king/. n. 1. Chem. a ductile, bluish white metallic element: used in making galvanized iron, brass, and other alloys, and as an… …
74Golden hat — Golden hats (or Gold hats) (German: Goldhüte , singular: Goldhut ) are a very specific and rare type of archaeological artefact from Bronze Age Central Europe. So far, four such objects ( cone shaped gold hats of the Schifferstadt type ) are… …
75Golden Hat of Schifferstadt — The Golden Hat of Schifferstadt ( de. Der Goldene Hut von Schifferstadt) was discovered in a field near the town of Schifferstadt in Southwest Germany. It is a Bronze Age artefact made of thin sheet gold and served as the external decoration of a …
76Thermoplastics — A thermoplastic is a plastic that melts to a liquid when heated and freezes to a brittle, very glassy state when cooled sufficiently. Most thermoplastics are high molecular weight polymers whose chains associate through weak Van der Waals forces… …
77mercury processing — Introduction preparation of the ore for use in various products. Mercury (Hg) has a unique combination of physical properties. Its low melting point (−38.87° C [−38° F]) and boiling point (356.9° C [674° F]), high specific gravity (13 …
78Fire sprinkler — A fire sprinkler is the part of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been reached. History Henry S. Parmelee of New Haven, CT created and… …
79Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a …
80Potassium — (pronEng|pəˈtæsiəm) is a chemical element. It has the symbol K ( la. kalium, from ar. qalīy), atomic number 19, and atomic mass 39.0983. The name potassium comes from the word potash , as potassium was first isolated from potash. Potassium is a… …
