Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wear-resistant alumina sintered body
The present invention addresses the problem of providing an alumina-based sintered body which has not only excellent wear resistance but also excellent impact resistance, and which is suppressed in the occurrence of cracks and defects due to impact. This wear-resistant alumina sintered body is mainly composed of Al2O3, and contains SiO2, CaO, and MgO in a total amount of 5.0-10.0 wt%. When the total content of Al2O3, SiO2, CaO and MgO forming the alumina grain boundary glass phase is 100% by weight, the content of Al2O3 is 16.0-23.0% by weight, the content of SiO2 is 65.0-79.0% by weight, the content of CaO is 2.0-6.0% by weight, and the content of MgO is 2.0-8.0% by weight; the content of unavoidable impurities is 0.5 wt% or less; the porosity is 3.0% or less; the average diameter of the glass phase is 0.5 [mu] m or less; the content ratio of the glass phase is 3.0-10.0% of the total alumina sintered body; the average crystal grain size of the alumina sintered body is 0.8-2.0 [mu] m; and the maximum crystal grain size is 6.0 [mu] m or less.
本发明的课题在于提供一种不仅耐磨性而且耐冲击性也优良、并且抑制因冲击引起的破裂、缺损的发生的氧化铝质烧结体。本发明的耐磨性氧化铝质烧结体，以Al2O3为主要成分，合计以5.0～10.0重量％含有SiO2、CaO和MgO；当形成氧化铝晶界玻璃相的Al2O3、SiO2、CaO和MgO的合计含量计为100重量％时，Al2O3为16.0～23.0重量％，SiO2为65.0～79.0重量％，CaO为2.0～6.0重量％，MgO为2.0～8.0重量％；不可避免的杂质为0.5重量％以下；孔隙率为3.0％以下；玻璃相的平均直径为0.5μm以下；玻璃相的含有比例为氧化铝质烧结体整体的3.0～10.0％；氧化铝质烧结体的平均结晶粒径为0.8～2.0μm；最大结晶粒径为6.0μm以下。
Wear-resistant alumina sintered body
The present invention addresses the problem of providing an alumina-based sintered body which has not only excellent wear resistance but also excellent impact resistance, and which is suppressed in the occurrence of cracks and defects due to impact. This wear-resistant alumina sintered body is mainly composed of Al2O3, and contains SiO2, CaO, and MgO in a total amount of 5.0-10.0 wt%. When the total content of Al2O3, SiO2, CaO and MgO forming the alumina grain boundary glass phase is 100% by weight, the content of Al2O3 is 16.0-23.0% by weight, the content of SiO2 is 65.0-79.0% by weight, the content of CaO is 2.0-6.0% by weight, and the content of MgO is 2.0-8.0% by weight; the content of unavoidable impurities is 0.5 wt% or less; the porosity is 3.0% or less; the average diameter of the glass phase is 0.5 [mu] m or less; the content ratio of the glass phase is 3.0-10.0% of the total alumina sintered body; the average crystal grain size of the alumina sintered body is 0.8-2.0 [mu] m; and the maximum crystal grain size is 6.0 [mu] m or less.
本发明的课题在于提供一种不仅耐磨性而且耐冲击性也优良、并且抑制因冲击引起的破裂、缺损的发生的氧化铝质烧结体。本发明的耐磨性氧化铝质烧结体，以Al2O3为主要成分，合计以5.0～10.0重量％含有SiO2、CaO和MgO；当形成氧化铝晶界玻璃相的Al2O3、SiO2、CaO和MgO的合计含量计为100重量％时，Al2O3为16.0～23.0重量％，SiO2为65.0～79.0重量％，CaO为2.0～6.0重量％，MgO为2.0～8.0重量％；不可避免的杂质为0.5重量％以下；孔隙率为3.0％以下；玻璃相的平均直径为0.5μm以下；玻璃相的含有比例为氧化铝质烧结体整体的3.0～10.0％；氧化铝质烧结体的平均结晶粒径为0.8～2.0μm；最大结晶粒径为6.0μm以下。
Wear-resistant alumina sintered body
耐磨性氧化铝质烧结体
SUGIMOTO TAKESHI (Autor:in) / SHIBATA TAKAYUKI (Autor:in) / YAMAOKA TAKESHI (Autor:in) / YAMAGUCHI KAZUSHIGE (Autor:in) / ONISHI HIROSHI (Autor:in)
18.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
ALUMINA SINTERED BODY PRODUCTION METHOD AND ALUMINA SINTERED BODY
| Europäisches Patentamt | 2022