About: http://webisa.webdatacommons.org/268960105

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	In one aspect, the pre-treatment layer may be a reactive material selected from the group consisting of: chromium, silicon, titanium, tungsten, and mixtures thereof, including carbides, nitrides, and alloys.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com