The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2022
Filed:
Jul. 18, 2018
Saint-gobain Centre DE Recherches ET D'etudes Europeen, Courbevoie, FR;
Emmanuel Nonnet, Saint-Saturnin les Avignon, FR;
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie, FR;
Abstract
A sintered bead with the following crystal phases, in percentages by mass based on crystal phases: 25%≤zircon, or 'Z', ≤94%; 4%≤stabilized zirconia+stabilized hafnia, or 'Z', ≤61%; monoclinic zirconia+monoclinic hafnia, or “Z”≤50%; corundum≤57%; crystal phases other than Z, Z, Zand corundum<10%; the following chemical composition, in percentages by mass based on oxides: 33%≤ZrO+HfO, or “Z”≤83.4%; HfO≤2%; 10.6%≤SiO≤34.7%; AlO≤50%; 0%≤YO, or “Z”; 0%≤CeO, or “Z”; 0.3%≤CeO+YO≤19%, provided that (1) CeO+3.76*YO≥0.128*Z, and (2) CeO+1.3*YO≤0.318*Z, with Z=Z+Z+Z−(0.67*Z*(Z+Z+Z)/(0.67*Z+Z+Z)); MgO≤5%; CaO≤2%; oxides other than ZrO, HfO, SiO, AlO, MgO, CaO, CeOand YO<5.0%.