Preparation of the Shape Memory Alloy NiTi using Vacuum Plasma spraying system VPS

Abstract

In this work polycrystalline alloys from shape memory alloy have beenprepared successfully by thermal plasma spraying system, in wire form of 3 mmdiameter in graphite cast with three different ratios Ni50Ti50, Ni50.5Ti49.5, andNi51Ti49. Its structure has been tested by means of XRD technique; the patterns of xrayhave showed that its structure is a mixture of Austenite and Martensite phases. Ithas also been noticed that increasing Ni proportion more than 50% to Ti in the alloyincreases the Martensite phases