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A platform for research: civil engineering, architecture and urbanism
CERAMIC SINTERED BODY, CERAMIC HEATER AND GLOW PLUG
PROBLEM TO BE SOLVED: To suppress an increase in production cost of a ceramic sintered body while suppressing a decrease in the oxidation resistance of the ceramic sintered body in a wide temperature range.SOLUTION: A ceramic sintered body has a main phase containing crystals of silicon nitride, and a grain boundary phase between the main phases. The grain boundary phase contains a crystal phase that contains at least one rare earth element selected from Yb and Er, Si, Al, oxygen, and 0.5wt% or more and 2.0wt% or less of nitrogen, and does not contain a group 2 element in the IUPAC periodic table.SELECTED DRAWING: Figure 2
【課題】広い温度範囲におけるセラミック焼結体の耐酸化性の低下を抑制しつつセラミック焼結体の製造コストの増加を抑制する。【解決手段】セラミック焼結体は、窒化珪素の結晶から成る主相と、主相同士の間に存在する粒界相と、を備え、粒界相は、ＹｂおよびＥｒから選ばれる少なくとも１種の希土類元素と、Ｓｉと、Ａｌと、酸素と、０．５ｗｔ％以上２．０ｗｔ％以下の窒素とを含有し、且つＩＵＰＡＣ周期表における第２族元素を含有しない結晶相を含む。【選択図】図２
CERAMIC SINTERED BODY, CERAMIC HEATER AND GLOW PLUG
PROBLEM TO BE SOLVED: To suppress an increase in production cost of a ceramic sintered body while suppressing a decrease in the oxidation resistance of the ceramic sintered body in a wide temperature range.SOLUTION: A ceramic sintered body has a main phase containing crystals of silicon nitride, and a grain boundary phase between the main phases. The grain boundary phase contains a crystal phase that contains at least one rare earth element selected from Yb and Er, Si, Al, oxygen, and 0.5wt% or more and 2.0wt% or less of nitrogen, and does not contain a group 2 element in the IUPAC periodic table.SELECTED DRAWING: Figure 2
【課題】広い温度範囲におけるセラミック焼結体の耐酸化性の低下を抑制しつつセラミック焼結体の製造コストの増加を抑制する。【解決手段】セラミック焼結体は、窒化珪素の結晶から成る主相と、主相同士の間に存在する粒界相と、を備え、粒界相は、ＹｂおよびＥｒから選ばれる少なくとも１種の希土類元素と、Ｓｉと、Ａｌと、酸素と、０．５ｗｔ％以上２．０ｗｔ％以下の窒素とを含有し、且つＩＵＰＡＣ周期表における第２族元素を含有しない結晶相を含む。【選択図】図２
CERAMIC SINTERED BODY, CERAMIC HEATER AND GLOW PLUG
セラミック焼結体、セラミックヒータおよびグロープラグ
TAKEUCHI HIROTAKA (author) / IGAI YOSHIHITO (author)
2017-11-16
Patent
Electronic Resource
Japanese
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