Measuring device and method for measuring coating interface bonding strength of sample
A technology of interface bonding strength and measuring device, which is applied to measuring devices, mechanical devices, instruments, etc., can solve problems such as interface bonding strength of difficult-to-thick coating materials, and achieve the effects of high test efficiency, easy implementation and simple structure
Active Publication Date: 2016-01-27
TSINGHUA UNIV
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Problems solved by technology
However, these methods have great limitations for thick coatings and their high-strength and high-toughness materials, and it is difficult to obtain the interface bonding strength of thick coating materials.
Method used
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[0025] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0026] A measuring device 10 for measuring the coating interface bonding strength of a sample 20 according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Such as figure 1 and figure 2 As shown, the sample 20 includes a substrate 21 and a coating 22 provided on the end surface of the substrate 21 , and the edge of the end surface of the substrate 21 is located inside the edge of the coating 22 . In other words, the projection of the coating 22 on the plane of the end surface of the base body 21 is located outside the edge of the end face of the base body 21 .
[0027] The measuring device 10 for m...
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Abstract
The invention discloses a measuring device and method for measuring the coating interface bonding strength of a sample. The sample comprises a base and a coating arranged on the end face of the base, wherein the edge of the end face of the base is located on the inner side of the edge of the coating. The measuring device for measuring the coating interface bonding strength of the sample comprises a first supporting frame and a second supporting frame, wherein the first supporting frame is provided with a clamping part; the second supporting frame is detachably arranged on the first supporting frame; a containing cavity used for containing the coating is formed between the first supporting frame and the second supporting frame; the second supporting frame is provided with a through hole allowing the first part of the base to pass through; the through hole is opposite to the clamping part in the first direction, and the edge of the through hole is suitable for being located on the inner side of the edge of the coating. The measuring device for measuring the coating interface bonding strength of the sample has the advantages of being simple in structure, easy to manufacture, high in test efficiency and the like.
Description
technical field [0001] The invention relates to a measuring device for measuring the coating interface bonding strength of a sample, and also relates to a measuring method for measuring the coating interface bonding strength of a sample. Background technique [0002] The service performance of coating materials directly affects the service life of the complete machine equipment or key components. During the service process, due to the differences in mechanical and thermal properties between the coating material and the base material, the stress / strain mismatch between the two materials will appear under the action of mechanical, thermal and other external loads. , eventually leading to failure of the coating material. The interface bonding performance between the coating and the substrate determines the service life of this material to a large extent. Good interfacial bonding is reflected in three aspects: one is the wetting of the matrix to the reinforcement; the other is...
Claims
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IPC IPC(8): G01N19/04
Inventor 王罡魏绍鹏俞建超聂振国融亦鸣黄梓麟
Owner TSINGHUA UNIV