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2005
Technology of materials
V 1500
Enhanced Powder Sintering of Near-Equiatomic NiTi Shape-Memory Alloys
Ca Reductant Vapor. — NiTi shape-memory alloys are prepared from equimo16- 220 Using
lar mixtures of Ni and TiH2 under vapor phase calciothermic reduction conditions in
the presence of CaH2 (500 °C for 9 h, 920 °C for 6 h, 1100 °C for 11 h). The samples
have fine pores and show enhanced shape-memory effects. The NiTi alloys produced
with this new process satisfy high technological requirements and thus could stimulate
new engineering applications. — (BERTHEVILLE, B.; BIDAUX*, J.-E.; J. Alloys
Compd. 387 (2005) 1-2, 211-216; Des. Mater. Unit, HEVs, Univ.
Appl. Sci. West. Switz., CH-1950 Sion, Switz.; Eng.) — W. Pewestorf
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