| 摘要 |
A surface composite material having improved corrosion resistance, wear resistance, high temperature stability, hardness and strength, and a method capable of manufacturing the surface composite material easily and continuously are provided. A surface composite material comprises: (i) a substrate; and (ii) an ion(Fe)-based crystalline surface composite layer including an austenitic matrix which is formed on the substrate and comprises iron, chromium and nickel, and a carbide-base or a boride-based precipitation-strengthened phase distributed in the austenitic matrix. The carbide-based precipitation-strengthened phase is titanium carbide(TiC), tungsten carbide(WC), vanadium carbide(VC), or a mixture thereof. The boride-based precipitation-strengthened phase is chromium boride(Cr2B), molybdenum boride(MoB), titanium boride(TiB2), or a mixture thereof. The surface composite layer includes the precipitation-strengthened phase and the matrix in a volume ratio of 1:0.5 to 1:10. The surface composite layer has a thickness of 0.3 to 3.0 mm. The surface composite layer and the substrate have an interface formed between them, and a heat affected zone with a thickness of 0.15 to 2.5 mm is formed along the interface on a lower portion of the interface. The substrate is made of iron, copper, aluminum, or titanium.
|
