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Elastic Response of Thermal Spray Deposits under Indentation Tests
Author(s) -
Leigh SangHa,
Lin ChungKwei,
Berndt Christopher C.
Publication year - 1997
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1997.tb03093.x
Subject(s) - knoop hardness test , indentation , materials science , elastic modulus , composite material , yttria stabilized zirconia , anisotropy , thermal spraying , fracture toughness , thermal , mineralogy , indentation hardness , cubic zirconia , ceramic , microstructure , optics , thermodynamics , geology , physics , coating
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 Al 2 O 3 , yttria‐stabilized ZrO 2 (YSZ), and NiAl. Statistical tools have been used to evaluate the error estimates of the data.