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公开(公告)号：EP0717726A1
公开(公告)日：1996-06-26
申请号：EP94927595.0
申请日：1994-09-09
IPC分类号： C04B35
CPC分类号： C04B35/597 , C04B35/65
摘要： The invention relates to the fields of ceramics and metallurgy and pertains to a process for producing refractory materials based on a SiAION/C or SiAlON/SiC/C composite. The aim of the invention is to indicate a process that prevents increased porosity due to the reaction of the carbon with the oxide or nitride phases of the material. This is accomplished by the invention through a process for producing refractory materials characterized in that to produce a refractory material with SiAlON and carbon, a mixture containing silicon, aluminum, aluminum oxide and carbon is heated in a predominantly nitrogen-containing atmosphere in three stages up to a maximum temperature of 2200 DEG C and that to produce a refractory material with SiAlON/SiC and carbon, the mixture may contain silicon carbide as well and the mixture is heated in a predominantly nitrogen-containing atmosphere in two stages to a maximum temperature of 2200 DEG C.
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公开(公告)号：EP0717726B1
公开(公告)日：1997-04-16
申请号：EP94927595.2
申请日：1994-09-09
IPC分类号： C04B35/597 , C04B35/65
CPC分类号： C04B35/597 , C04B35/65
摘要： The invention relates to the fields of ceramics and metallurgy and pertains to a process for producing refractory materials based on a SiAION/C or SiAlON/SiC/C composite. The aim of the invention is to indicate a process that prevents increased porosity due to the reaction of the carbon with the oxide or nitride phases of the material. This is accomplished by the invention through a process for producing refractory materials characterized in that to produce a refractory material with SiAlON and carbon, a mixture containing silicon, aluminum, aluminum oxide and carbon is heated in a predominantly nitrogen-containing atmosphere in three stages up to a maximum temperature of 2200 °C and that to produce a refractory material with SiAlON/SiC and carbon, the mixture may contain silicon carbide as well and the mixture is heated in a predominantly nitrogen-containing atmosphere in two stages to a maximum temperature of 2200 °C.
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