Patent
High toughness silicon nitride cutting tools
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TLDR
A silicon nitride cutting tool primarily for cutting cast iron comprises a granular phase consisting essentially of silicon oxide and an intergranular amorphous phase consisting of magnesium oxide, yttrium oxide and silicon oxide wherein the components are present in specified amounts and ratios as mentioned in this paper.Abstract:
A silicon nitride cutting tool primarily for cutting cast iron comprises a granular phase consisting essentially of silicon nitride and an intergranular amorphous phase consisting essentially of magnesium oxide, yttrium oxide and silicon oxide wherein the components are present in specified amounts and ratios.read more
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Carbonitride coated composite modified silicon aluminum oxynitride cutting tools
TL;DR: In this paper, a composite substrate body consisting of a particulate material selected from the group consisting of the refractory metal carbides, nitrides, carbonitrides and combinations thereof uniformly distributed in a matrix, is described.
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Ceramic cutting tool formed from Si3 N4 --Y2 O3 --SiO2 and method of making
TL;DR: In this paper, a novel silicon nitride comprising a unitary object is disclosed which can be shaped to form a novel cutting tool useful for machining metal such as cast iron.
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Alumina coated composite silicon aluminum oxynitride cutting tools
TL;DR: In this paper, a composite substrate body consisting of a particulate material selected from the group consisting of the refractory metal carbides, nitrides, carbonitrides and combinations thereof uniformly distributed in a matrix, coated with at least one adherent coating layer of alumina.
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Ceramic cutting tool formed from Si3 N4 -Y2 O3 -SiO.sub.
TL;DR: In this article, a unitary silicon nitride was formed by placing in a hot pressing environment a controlled mixture of a first powder of Si 3 N 4 containing a controlled amount of SiO 2 (with or without a limited amount of milling media) with a second powder consisting essentially of Y 2 O 3, hot pressing the controlled mixture and cooling the resultant unitary object.
Patent
Method for manufacture of high-strength sintered article of substances having β-silicon nitride type crystal structure
Hideyo Tabata,Yoshitaka Kuwahara,Michihide Machida,Shyoichi Kume,Takeo Iga,Kazuo Saitoh,Shinji Tomura +6 more
TL;DR: In this article, a high-strength sintered article of chemical substances having the β-silicon nitride type crystal structure is produced by blending 50 to 99.9 weight percent of a β-sialon and/or β'-Sialon, as a sintering aid.