CERAMICS DISPERSION STRENGTHENED TI-AL BASE COMPOSITE MATERIAL UTILIZING PLASMA ARC AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To form a dense ceramics dispersion strengthened Ti-Al base composite material into a desired shape by feeding a carrier gas contg. the raw material of Ti-Al metal powder and ceramics into plasma arc and depositing it onto a substrate for forming. ;SOLUTION: The space between a substrate 10 for forming and an electrode 21 is applied with voltage. The space between the electrode 21 and an inner nozzle 22a is fed with a gas Gp for plasma to generate plasma arc Ap between the electrode 21 and the substrate 10. From the space between the inner nozzle 22a and the inner nozzle 22b, a carrier gas Gc contg. the raw material of Ti-Al metal powder and ceramics is fed into the plasma arc Ap. The raw material of Ti-Al metal powder and ceramics is uniformly dissolved and is deposited onto the substrate 10 to form into a ceramics dispersion strengthened Ti-Al base composite material 24. A shield gas Gs is blown off from the space between the inner gas 22b and the shield gas nozzle 23.;COPYRIGHT: (C)1997,JPO