Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41596

Title

Elastic response of thermal spray deposits under indentation tests

Author(s)

Leigh, Sang Ha;  Lin, Chung Kwei;  Berndt, Christopher C.

Abstract

The elastic response behavior of thermal spray deposits at Knoop indentations has been investigated using indentation techniques. The ratio of hardness to elastic modulus, which is an important prerequisite for the evaluation of indentation fracture toughness, is determined by measuring the elastic recovery of the in-surface dimensions of Knoop indentations. The elastic moduli of thermal spray deposits are in the range of 12%-78% of the comparable bulk materials and reveal the anisotropic behavior of thermal spray deposits. A variety of thermal spray deposits has been examined, including Al2O3, yttria-stabilized ZrO2 (YSZ), and NiAl. Statistical tools have been used to evaluate the error estimates of the data.

Publication type

Journal article

Source

Journal of the American Ceramic Society, Vol. 80, no. 8 (Aug 1997), pp. 2093-2099

Publication year

1997

Keyword(s)

Anisotropy;  Elastic moduli;  Error analysis;  Fracture toughness;  Knoop indentation tests;  Statistical methods;  Thermal spray deposits;  YSZ;  Yttria stabilized zirconia

Publisher

Wiley-Blackwell Publishing

ISSN

0002-7820

Publisher URL

http://dx.doi.org/10.1111/j.1151-2916.1997.tb03093.x

Peer reviewed