About: http://webisa.webdatacommons.org/413561438

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Also, to obtain resistance to the corrosive conditions in the application, an alloying element such as yttrium or a rear earth metal is often added, but thermal spray powders or wires of such alloys are expensive to manufacture.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com