alpha-SIALON SINTERED COMPACT AND ITS MANUFACTURING METHOD
PROBLEM TO BE SOLVED: To provide a manufacturing method of an α-sialon sintered compact having a high toughness and hardness, and the α-sialon sintered compact. SOLUTION: The α-sialon sintered compact is manufactured by preparing a molded product made of a mixed powder for producing α-sialon corresp...
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Format | Patent |
Language | English |
Published |
28.04.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Abstract | PROBLEM TO BE SOLVED: To provide a manufacturing method of an α-sialon sintered compact having a high toughness and hardness, and the α-sialon sintered compact. SOLUTION: The α-sialon sintered compact is manufactured by preparing a molded product made of a mixed powder for producing α-sialon corresponding to the formula: Rx(Si, Al)12(O, N)16(wherein 0.33<x<0.67; and R is a rare-earth element) and sintering this in a nitrogen-containing atmosphere at 1,700-1,950°C under a normal pressure. The mixed powder comprises ≥80 wt.% and <97 wt.% mixture comprising silicon nitride, alumina, aluminum nitride and an oxide of the rare-earth element and ≥3 wt.% and <20 wt.% mixture comprising silica and the oxide of the rare-earth element. The manufacturing method of the sintered compact is also provided. COPYRIGHT: (C)2005,JPO&NCIPI |
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AbstractList | PROBLEM TO BE SOLVED: To provide a manufacturing method of an α-sialon sintered compact having a high toughness and hardness, and the α-sialon sintered compact. SOLUTION: The α-sialon sintered compact is manufactured by preparing a molded product made of a mixed powder for producing α-sialon corresponding to the formula: Rx(Si, Al)12(O, N)16(wherein 0.33<x<0.67; and R is a rare-earth element) and sintering this in a nitrogen-containing atmosphere at 1,700-1,950°C under a normal pressure. The mixed powder comprises ≥80 wt.% and <97 wt.% mixture comprising silicon nitride, alumina, aluminum nitride and an oxide of the rare-earth element and ≥3 wt.% and <20 wt.% mixture comprising silica and the oxide of the rare-earth element. The manufacturing method of the sintered compact is also provided. COPYRIGHT: (C)2005,JPO&NCIPI |
Author | HIRAO KIYOSHI MARK IAN JONES KAGA YOICHIRO |
Author_xml | – fullname: MARK IAN JONES – fullname: KAGA YOICHIRO – fullname: HIRAO KIYOSHI |
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Snippet | PROBLEM TO BE SOLVED: To provide a manufacturing method of an α-sialon sintered compact having a high toughness and hardness, and the α-sialon sintered... |
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SubjectTerms | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
Title | alpha-SIALON SINTERED COMPACT AND ITS MANUFACTURING METHOD |
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