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handle: 10261/2272 , 1822/1695
Se han fabricado materiales densos de nitruro de silicio (Si3N4) texturados incorporando semillas de β- Si3N4, favoreciendo su alineación mediante extrusión de las piezas en verde y prensado en caliente. Estos materiales presentan elevada anisotropía microestructural que conduce a un comportamiento anisótropo de sus propiedades, tanto mecánicas como tribológicas. Se han realizado ensayos de desgaste en seco mediante movimiento recíproco lineal de pares homólogos con geometría esfera-placa. El material texturado presenta mayor resistencia al desgaste que el de referencia, sin texturar, identificándose como principal mecanismo de desgaste la abrasión debida a microfractura y arranque de granos de Si3N4. En este material, además, se desarrolla un tercer cuerpo que protege la superficie del material.
Peer reviewed
Silicon nitride, Nitruro de Silicio, Tribological behaviour, Materiales texturados, Textured materials, Comportamiento tribológico
Silicon nitride, Nitruro de Silicio, Tribological behaviour, Materiales texturados, Textured materials, Comportamiento tribológico
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