Yttrium halides

Another common and important use of plasma is spray coating of materials with plasma-melted substances (167,168). Plasma torches heated by d-c arcs can be hand-held for spray coating (22). Plasma spraying is employed to apply oxidation-resistant coatings to metals for example, ceramic coatings of aircraft engine components and a proprietary cobalt—chrornium—alurninum—yttrium coating for gas-turbine blades (169,170) (see Refractory coatings). High temperature, self-lubricating coatings have also been appHed to materials using plasma techniques (171).  [c.116]

Solid oxide fuel cells consist of solid electrolytes held between metallic or oxide elecU odes. The most successful fuel cell utilizing an oxide electrolyte to date employs Zr02 containing a few mole per cent of yttrium oxide, which operates in tire temperature range 1100-1300 K. Other electrolytes based  [c.244]

ReflEXAES studies of the passivation of Ni electrodes were reported by Bosio et al. [4.171]. Studies of the effect of oxygen on interfacial reactions in Al-Ni bilayers were made by Ghen and Heald in 1989 [4.172], and the technique has been applied in the field of long-term storage of nuclear waste by analysis of the local structure around uranium in leached waste-containing borosilicate glasses [4.173]. It has been used to study the oxidation of stainless steel [4.174] and to investigate the so-called "active element effect in chromia-forming alloys by analysis of the local atomic structure around yttrium and chromium during the initial stages of oxidation of yttrium ion implanted NiGr and Gr [4.175, 4.176]. Eluorescence detection of surface EXAES was described by Heald et al. in 1984 [4.137] an example of the application  [c.220]

See pages that mention the term Yttrium halides : [c.56]   
Chemistry of the elements (1998) -- [ c.949 ]