About: http://webisa.webdatacommons.org/163173504

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	According to a first aspect of the present invention, there is provided a polycrystalline sintered body comprising predominantly ??-Si3N4, i.e. between about 95 to about 97% by volume, wherein the oxygen content is 1.2-1.5 wt. %.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com