Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of crack self-healing ceramic material
The invention relates to a preparation method of a crack self-healing ceramic material. The problem that an existing TZP material is lowered in strength and toughness at a high temperature is solved. The method includes the steps of adding second-phase self-healing particles to base body powder, adding absolute ethyl alcohol, conducting ball milling for 24 h through a blender mixer, conducting drying and screening to obtain mixed powder, sintering the mixed powder through a vacuum hot-press method, and obtaining the crack self-healing ceramic material. The method is low in raw material cost, simple in preparation process and short in cycle; by means of the added SiC and MoSi2 particles, the mechanical properties of the composite material can be improved, and cracks can be healed, and cracks can be healed through the non-crystalline Si-O(SiO) phase generated through oxidation; the heat treatment process adopted for crack healing is easy and convenient to operate, low in cost and wide in application range; after the cracks are healed, the material strength reaches the strength of a sintering sample. The method is applied to the field of ceramic materials.
Preparation method of crack self-healing ceramic material
The invention relates to a preparation method of a crack self-healing ceramic material. The problem that an existing TZP material is lowered in strength and toughness at a high temperature is solved. The method includes the steps of adding second-phase self-healing particles to base body powder, adding absolute ethyl alcohol, conducting ball milling for 24 h through a blender mixer, conducting drying and screening to obtain mixed powder, sintering the mixed powder through a vacuum hot-press method, and obtaining the crack self-healing ceramic material. The method is low in raw material cost, simple in preparation process and short in cycle; by means of the added SiC and MoSi2 particles, the mechanical properties of the composite material can be improved, and cracks can be healed, and cracks can be healed through the non-crystalline Si-O(SiO) phase generated through oxidation; the heat treatment process adopted for crack healing is easy and convenient to operate, low in cost and wide in application range; after the cracks are healed, the material strength reaches the strength of a sintering sample. The method is applied to the field of ceramic materials.
Preparation method of crack self-healing ceramic material
ZHANG XIUPING (Autor:in) / OUYANG JIAHU (Autor:in) / LIU ZHANGUO (Autor:in)
27.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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