发明名称 |
Determination of adhesion strength of HVOF coating by spherical indentation |
摘要 |
A method for determining the adhesion strength of any HVOF-coating/substrate system. This method applies a spherical indentor to the coated part in a loading-unloading cycle. During the loading phase, the substrate deforms plastically. During the unloading phase, the elastic-plastic mismatch between coating and substrate material properties gives rise to a tensile stress normal to the interface. This leads to delamination for a sufficient indentation load. A hybrid numerical-experimental approach calculates the interfacial adhesion. The threshold load for delamination is found experimentally. A finite element model calculates the corresponding adhesion stress for delamination. This method enables the quantitative evaluation of the adhesion for any coating/substrate interface, regardless of bond strength.
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申请公布号 |
US6581446(B1) |
申请公布日期 |
2003.06.24 |
申请号 |
US20010958618 |
申请日期 |
2001.10.11 |
申请人 |
THE UNIVERSITY OF HOUSTON |
发明人 |
DENEUVILLE LOIC;WHITE KENNETH W.;RAVI-CHANDAR KRISHNASWAMY |
分类号 |
G01N3/00;G01N3/42;G01N19/04;(IPC1-7):G01N3/48 |
主分类号 |
G01N3/00 |
代理机构 |
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