초록 ▼

A composite structure forming method comprises the steps of first pre-treating brittle material fine particles to impart an internal strain to the brittle material fine particles, secondly causing the brittle material fine particles in which the internal strain has been created to collide with a sub

A composite structure forming method comprises the steps of first pre-treating brittle material fine particles to impart an internal strain to the brittle material fine particles, secondly causing the brittle material fine particles in which the internal strain has been created to collide with a substrate surface at high speed or applying a mechanical impact force to the brittle material fine particles containing the internal strain therein provided on the substrate surface, to deform or fracture the brittle material fine particles, re-joining the fine particles through active new surfaces generated by the deformation or fracture, forming an anchor section made of polycrystalline brittle material of which part bites into the substrate surface at a boundary section between the new surfaces and the substrate, and further forming a structure made of polycrystalline brittle material on the anchor section.

대표청구항 ▼

What is claimed is: 1. A composite structure forming method comprising the steps of:a) creating internal strain ranging between 0.25 to 2.0% in brittle material fine particles having an average particle size of 0.1 to 5 μm;b) causing the brittle material fine particles in which the internal strain h

What is claimed is: 1. A composite structure forming method comprising the steps of:a) creating internal strain ranging between 0.25 to 2.0% in brittle material fine particles having an average particle size of 0.1 to 5 μm;b) causing the brittle material fine particles in which the internal strain has been created to collide with a substrate surface at a speed of 50-450 m/s;c) deforming or fracturing the brittle material fine particles by impact of the collision:d) mutually joining of the collided fine particles occurring through contact of newly generated active surfaces formed by the deforming or fracturing; and at the same timee) forming an irregularity on the surface of the substrate caused by the collision of the brittle material fine particles with the substrate;thereby forming a polycrystalline structure made of the brittle material on the irregularity.