A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
REINFORCED PORCELAIN AND PRODUCTION METHOD THEREOF
PROBLEM TO BE SOLVED: To provide reinforced porcelain that has large bending strength after sintering, and less fluctuation in bending strength and has stable quality, and to provide a production method of reinforced porcelain that is excellent in moldability when molding and has good yield.SOLUTION: Reinforced porcelain contains, based on oxide, aluminum oxide of 33-62 mass%, silicon dioxide of 20-37 mass%, and alkali metal oxide of 2-5 mass%, excluding inevitable impurities. The amount of total sum of the three component is 98 mass% or more with respect to the whole component. A production method of the reinforced porcelain comprises mixing flux of 10-20 mass% to raw material, the flux having molar ratio of the silicon dioxide with respect to the alkali metal oxide in which chemical composition of each metal element is noted by molar ratio of each metal oxide is five times or less, and firing the mixture at 1250-1400°C to produce a sintered body with average bending strength of 290 MPa or higher.SELECTED DRAWING: None
【課題】焼結後の曲げ強さが大きく、曲げ強さのばらつきが少ない品質の安定した強化磁器、および成形時の成形性に優れ歩留まりの良い強化磁器製造方法の提供。【解決手段】不可避的不純物を除き、酸化物基準で、酸化アルミニウム３３〜６２質量％、二酸ケイ素２０〜３７質量％、アルカリ金属酸化物２〜５質量％を含有し、前記３成分の合計の量が、全成分に対して、９８質量％以上であり、各金属元素の化学組成を各金属酸化物のモル比で表記したアルカリ金属酸化物に対する二酸化ケイ素のモル比が５倍以下である融剤を１０〜２０質量％を配合して、１２５０℃〜１４００℃で焼成し、平均曲げ強さが２９０ＭＰａ以上の焼結体とする強化磁器及び該強化磁器の製造方法。【選択図】なし
REINFORCED PORCELAIN AND PRODUCTION METHOD THEREOF
PROBLEM TO BE SOLVED: To provide reinforced porcelain that has large bending strength after sintering, and less fluctuation in bending strength and has stable quality, and to provide a production method of reinforced porcelain that is excellent in moldability when molding and has good yield.SOLUTION: Reinforced porcelain contains, based on oxide, aluminum oxide of 33-62 mass%, silicon dioxide of 20-37 mass%, and alkali metal oxide of 2-5 mass%, excluding inevitable impurities. The amount of total sum of the three component is 98 mass% or more with respect to the whole component. A production method of the reinforced porcelain comprises mixing flux of 10-20 mass% to raw material, the flux having molar ratio of the silicon dioxide with respect to the alkali metal oxide in which chemical composition of each metal element is noted by molar ratio of each metal oxide is five times or less, and firing the mixture at 1250-1400°C to produce a sintered body with average bending strength of 290 MPa or higher.SELECTED DRAWING: None
【課題】焼結後の曲げ強さが大きく、曲げ強さのばらつきが少ない品質の安定した強化磁器、および成形時の成形性に優れ歩留まりの良い強化磁器製造方法の提供。【解決手段】不可避的不純物を除き、酸化物基準で、酸化アルミニウム３３〜６２質量％、二酸ケイ素２０〜３７質量％、アルカリ金属酸化物２〜５質量％を含有し、前記３成分の合計の量が、全成分に対して、９８質量％以上であり、各金属元素の化学組成を各金属酸化物のモル比で表記したアルカリ金属酸化物に対する二酸化ケイ素のモル比が５倍以下である融剤を１０〜２０質量％を配合して、１２５０℃〜１４００℃で焼成し、平均曲げ強さが２９０ＭＰａ以上の焼結体とする強化磁器及び該強化磁器の製造方法。【選択図】なし
REINFORCED PORCELAIN AND PRODUCTION METHOD THEREOF
強化磁器及びその製造方法
TSUTSUMI YASUYUKI (author) / GAMACHI NOBUAKI (author)
2018-05-10
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
Collision-resistant reinforced porcelain formula and production process thereof
| European Patent Office | 2023
| European Patent Office | 2020