24-06-2021 дата публикации
Номер: US20210188714A1
A ceramic contains, in mass percent: SiN: 20.0 to 60.0%, ZrO: 25.0 to 70.0%, and one or more oxides selected from MgO, YO, CeO, CaO, HfO, TiO, AlO, SiO, MoO, CrO, CoO, ZnO, GaO, TaO, NiO, and VO: 5.0 to 15.0%. The ceramic has a coefficient of thermal expansion as high as that of silicon and an excellent mechanical strength, allows fine machining with high precision, and prevents particles from being produced. 1. A ceramic containing , in mass percent:{'sub': 3', '4, 'SiN: 20.0 to 60.0%;'}{'sub': '2', 'ZrO: 25.0 to 70.0%; and'}{'sub': 2', '3', '2', '2', '2', '2', '3', '2', '3', '2', '3', '2', '5', '2', '5, 'one or more oxides selected from MgO, YO, CeO, CaO, HfO, TiO, AlO, SiO, MoO, CrO, CoO, ZnO, GaO, TaO, NiO, and VO: 5.0 to 15.0%.'}2. The ceramic according to containing claim 1 , in mass percent:{'sub': 2', '3', '2', '2, 'one or more oxides selected from MgO, YO, CeO, CaO, and HfO; and'}{'sub': 2', '2', '3', '2', '3', '2', '3', '2', '5', '2', '5, 'one or more oxides selected from TiO, AlO, SiO, MoO, CrO, CoO, ZnO, GaO, TaO, NiO, and VO.'}3. The ceramic according to claim 1 , wherein a crystal phase of ZrOis one of a crystal phase being a tetragonal crystal claim 1 , a crystal phase being a tetragonal crystal and a monoclinic crystal claim 1 , a crystal phase being a cubic crystal claim 1 , a crystal phase being a cubic crystal and a tetragonal crystal claim 1 , and a crystal phase being a cubic crystal and a monoclinic crystal.4. The ceramic according to claim 1 , wherein ZrOis a cubic crystal.5. The ceramic according to claim 1 , wherein the ceramic has a coefficient of thermal expansion at −50 to 500° C. ranging from 3.0×10to 6.0×10/° C. and has a three-point flexural strength of 700 MPa or more.6. A probe guiding member that guides probes of a probe card claim 1 , the probe guiding member comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a plate-shaped main body that is made of the ceramic according to ; and'}the main body includes a plurality of ...
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