Biased Deposition of Nanocrystalline Be(1-x)Cu(x) Coatings.

Hankowski, A.

Technical Information Center Oak Ridge Tennessee

关键词: Coatings;    Depsoition;    Bias;    Mechanical tests;    Strains;   

RP-ID  :  DE200415007534

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Coatings of Be(sub 1-x)Cu(sub x) are prepared by magnetron sputter deposition onto spherical polymer mandrels. The application of an applied bias during deposition refines the columnar morphology of the coating and surface finish to the nanoscale. A mechanical testing technique is developed to load the thin-walled spherical capsules under uniaxial tension at constant strain to fracture. The bias-deposited material exhibits an increase in strength by a factor of three or more following a Hall-Petch type relationship with surface roughness.