CN1287139C - High bonding strength test method for coating and matrix - Google Patents
High bonding strength test method for coating and matrix Download PDFInfo
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- CN1287139C CN1287139C CNB2003101211228A CN200310121122A CN1287139C CN 1287139 C CN1287139 C CN 1287139C CN B2003101211228 A CNB2003101211228 A CN B2003101211228A CN 200310121122 A CN200310121122 A CN 200310121122A CN 1287139 C CN1287139 C CN 1287139C
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- coating
- matrix
- otch
- pressure head
- basal body
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- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 239000011159 matrix material Substances 0.000 title claims description 19
- 238000010998 test method Methods 0.000 title claims description 6
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 229920000297 Rayon Polymers 0.000 claims abstract description 6
- 238000012937 correction Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 3
- 101100129500 Caenorhabditis elegans max-2 gene Proteins 0.000 claims description 2
- 238000005336 cracking Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000011247 coating layer Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004873 anchoring Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010285 flame spraying Methods 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 208000013201 Stress fracture Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention belongs to the field of high binding strength testing of a coating and a basal body. The present invention is characterized in that a wedge-shaped press head is used as a load on a compression testing machine; a notch with an angle alpha of a sample basal body is made so that the central line of the notch falls on the interface of the coating layer and the sample basal body; one end of the coating is in adhesive joint with the left surface of a supporting seat of the testing machine; the wedge-shaped press head is loaded at a speed of 13 mm/min to 3 mm/min to the sample basal body to break the sample basal body; test load data is recorded, and a strength calculation formula is used to accurately and reliably calculate the binding strength. Compared with a viscose method, the present invention overcomes the defect that adhesive can be not used for high binding strength tests of the coating and the basal body because the viscose has limited strength; besides, test data has high reliability.
Description
Technical field
The invention belongs to the high bond strength field tests of coating and matrix.
Technical background
The surface spraying technology with less expense, increases substantially the performance of material under the prerequisite that does not change material structure, obtain remarkable economic efficiency.For this reason, industrially developed country such as the U.S., Japan etc. are the forward position of sufacing as investigation of materials.China uses the research and development of sufacing and also attaches great importance to.
Along with the development of surface coating technology, coating and high base strength are more and more high, thereby have brought difficulty for the mensuration of anchoring strength of coating.The method that the ASTMC633-79 of American Standard of Testing Materials association proposes, owing to be subjected to the restriction of adhesive strength, test specification only in less than the 70MPa scope, can not be used for the test of high bond strength Bond Strength of Coating.To this, successively conduct a research both at home and abroad, states such as moral, day begin relatively to tend to scarification, find that afterwards this method physical significance is indeterminate, and resulting data are relatively disperseed, and are difficult to estimate effectively the performance of coating material.Promptly and the scientist of Russia proposes incremental launching method, but this method is subjected to coating shear resistance Effect on Performance, can not estimate the high bond strength coating, ASTM (American society for testing materials) testing laboratory is studied ball-pressure method, but the influence that is subjected to the matrix elastic parameter is very big, and sample stress complexity, so that can not be enough to various coatings are estimated, the imprint method of France's proposition in the recent period, the whole bag of tricks such as crackle method, but because in these test methods, the stress complexity of sample, coating and basal body interface crack stress are difficult to calculate, these methods still among discussing, up to the present, do not obtain a kind of practicable as yet, explicit physical meaning, the evaluation method that is suitable for measuring high bond strength coating and substrate combinating strength that influence factor is little.
Summary of the invention
The objective of the invention is to propose a kind of wedge shape Loading Method, overcome the restriction of viscose glue bond strength, firmly the section of learning to do is estimated the high bond strength testing method of coating and matrix.
The present invention is on pressure testing machine, with test specimen matrix 1 otch that is α in angle of interface manufacture of matrix and coating 2, the otch center line is dropped on the interface, otch front end curvature half warp is (0.05～0.3mm), the outside of coating is a viscose glue 3, matrix is placed on the pressure testing machine bearing 5, coated ends and bearing left side are close to and are bonding, the pressure head of pressing machine is that wedge shape loads pressure head 4, the pressure head lower end is made into the α angle, and pressure head forward position radius ρ is that (0.1～0.5mm), pressure head is so that (1～3mm) speed is loaded into the test specimen fracture, record test load one time curve, the computing formula of coating and high base strength is as follows:
In the formula
α-otch angle
The K-correction factor
The Pmax-cracking load
The Lo-specimen length
The W-specimen width
h
1The intact oral area height of-sample
h
2-sample break portion height
б
g-coating and high base strength
α is 10 ° of-50 ° of h
2Be 0.3-3mm
h
2/ h
1For
Coating thickness is 0.3-3mm
Advantage of the present invention is to compare with viscose process, overcome the latter because bonding strength is limited, can not be used for the shortcoming of high bond strength anchoring strength of coating test, compared with other indirect method, the present invention makes interface normal stress fracture, has improved the reliability of test data.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is specimen shape and stress model synoptic diagram
Fig. 3 is fracture process and sample force analysis synoptic diagram, P
1, P
1' be the component on the vertical inclined-plane, P
2, P
2' be P
1, P
1' the horizontal direction component that decomposes, P
3, P
3' be P
1, P
1' the vertical direction component that decomposes
Fig. 4 be material correction factor K with coating/matrix hardness than valve system curve
Fig. 5 is experiment load time curve
Embodiment
To supersonic spray coating WC/CO coating, matrix material is the Ti alloy with the present invention, and the WC/CO coated substrate is 45
#Steel, W0C
rW coating, matrix material are 45
#Steel, the Ni Al composite filament of flame spraying, matrix material is 45
#The result that the bond strength of steel is measured is as table ()～table (four).
Table (one) WC/Co/Ti alloy hypervelocity spray-on coating bond strength data (wedges method)
| Numbering | h 1 (mm) | h 2 (mm) | W (mm) | P max (N) | Lo (mm) | α (·) | K | σ g (Mpa) | σ g (Mpa) | σ (Mpa) standard deviation | σ/σ g ％ | (σ g-σ g)/σ |
| G | 3.5 | 2.5 | 79 | 1200 | 20 | 30 | 23 | 86 | 80.5 | 502 | 6.2％ | 1.09 |
| H | 3.4 | 2.6 | 76 | 1280 | 20 | 30 | 23 | 75 | -1.09 | |||
| M | 3.4 | 2.6 | 8 | 1370 | 20 | 30 | 23 | 76 | -0.09 | |||
| B | 3.5 | 25 | 78 | 1230 | 20 | 30 | 23 | 85.1 | 0.92 |
Table (two) WC/Co/45
#Steel hypervelocity spray-on coating bond strength data (wedges method)
| Numbering | h 1 (mm) | h 2 (mm) | W (mm) | P max (N) | L0 (mm) | α (°) | K | σ g (Mpa) | σ g (Mpa) | σ (Mpa) standard deviation | σ/σ g ％ | (σ g-σ g)/σ |
| A 1 | 3.5 | 2.5 | 7.9 | 1134 | 10 | 30 | 2.3 | 82 | 81.6 | 2.42 | 3％ | 0.16 |
| A 2 | 3.6 | 2.4 | 7.9 | 906 | 10 | 30 | 2.3 | 81 | -0.25 | |||
| A 3 | 3.6 | 2.4 | 7.9 | 962 | 10 | 30 | 2.3 | 86 | 1.82 | |||
| A 4 | 3.7 | 2.5 | 7.9 | 910 | 10 | 30 | 2.3 | 80 | -0.66 | |||
| A 5 | 3.5 | 2.5 | 7.9 | 1092 | 10 | 30 | 2.3 | 79 | -1.07 |
Table (three) CoCrW/45
#Steel supersonic spray coating anchoring strength of coating data (wedges method)
| Numbering | W (mm) | h 1 (mm) | h 2 (mm) | L0/2 (mm) | P max (mm) | K | σg | σg | σ | σ/σg | (∑gi-σg)/σ |
| CoCrW-1 | 5.82 | 3.48 | 1.67 | 5.02 | 327 | 1.36 | 53.6 | 60.4 | 6.6 | 11％ | -1.03 |
| CoCrW-2 | 5.70 | 3.13 | 1.66 | 5.01 | 389 | 1.36 | 56.7 | -0.56 | |||
| CoCrW-3 | 5.81 | 3.37 | 1.82 | 5.05 | 514 | 1.36 | 69.9 | 1.4 | |||
| CoCrW-4 | 5.76 | 3.20 | 1.66 | 5.02 | 369 | 1.36 | 55.0 | -0.8 | |||
| CoCrW-5 | 5.74 | 3.03 | 1.77 | 5.00 | 550 | 1.36 | 66.6 | 0.94 |
Table (four) NiAl composite filament/45
#Steel matrix flame spraying bond strength data (wedges method)
| Numbering | h 1 | h 2 | W | Lo/2 | P max (N) | σg | K | σg | σ | σ/σg | (σgi-σg)/σ |
| 1 | 2.896 | 1.936 | 5.803 | 5.8 | 634.8 | 26.3 | 1.1 | 31.5 | 37 | 11.9 | -1.4 |
| 2 | 2.946 | 1.817 | 6.156 | 5.30 | 666.6 | 32.4 | 1.1 | +0.24 | |||
| 3 | 3.04 | 1.825 | 5.755 | 5.2 | 476.2 | 30.0 | 1.1 | -0.41 | |||
| 4 | 3.03 | 1.77 | 5.76 | 5.28 | 585.3 | 37.8 | 1.1 | ||||
| 5 | 3.45 | 1.374 | 5.78 | 5.16 | 773.8 | 31.2 | 1.1 | -0.08 |
About material correction factor K:
When the wedge-formed incision test specimen loaded lower stress at wedge type, the most advanced and sophisticated point of otch was subjected to maximum tension stress σ
MaxEffect.Because the mechanics parameter difference of material produces certain effect that influences with counter stress, its influence degree is represented with correction factor K.It is relevant that experiment records the ratio of Vickers hardness of the dimension third constellations hardness of material correction factor K and coating material and matrix material, and experiment records the relation curve of data point match as scheming shown in (4) curve least square fitting, related coefficient ρ
XyBe 0.986.Material correction factor K is H with the ratio of coated substrate Vickers hardness as can be seen
VBe coated with/H
VBase is linear dependence, and the equation of institute's match is as follows:
K=0.164+0.5 (Hv is coated with/the Hv yl)
When measuring anchoring strength of coating, with coating and matrix Vickers hardness ratio substitution formula, obtain corresponding material correction factor K, thereby carry out the calculating of coating and high base strength σ g with wedges method.
Claims (3)
1, the high bond strength method of testing of coating and matrix, it is characterized in that on pressure testing machine, with test specimen matrix (1) otch that is α in angle of interface manufacture of matrix and coating (2), the otch center line is dropped on the interface, otch front end curvature half is through being 0.05～0.3mm, the outside of coating is viscose glue (3), matrix is placed on the pressure testing machine bearing (5), coated ends and bearing left side are close to and are bonding, the pressure head of pressing machine is that wedge shape loads pressure head (4), the pressure head lower end is made into the α angle, pressure head forward position radius ρ is 0.1～0.5mm, pressure head is loaded into the test specimen fracture with the speed of 1～3mm/min, record test load one time curve, and the computing formula of coating and high base strength is as follows:
In the formula
α-otch angle
The K-correction factor, K=0.164+0.5 (Hv is coated with/the Hv yl)
The Pmax-cracking load
The Lo-specimen length
The W-specimen width
h
1The intact oral area height of-sample
h
2-sample break portion height
6g-coating and high base strength.
2, method of testing according to claim 1 is characterized in that the otch angle [alpha] is 10 °-50 °.
3, method of testing according to claim 1 is characterized in that h
2Be 0.3-3mm, h
2/ h
1For
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101211228A CN1287139C (en) | 2003-12-15 | 2003-12-15 | High bonding strength test method for coating and matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101211228A CN1287139C (en) | 2003-12-15 | 2003-12-15 | High bonding strength test method for coating and matrix |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1629617A CN1629617A (en) | 2005-06-22 |
| CN1287139C true CN1287139C (en) | 2006-11-29 |
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|---|---|---|---|
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100538323C (en) * | 2006-04-07 | 2009-09-09 | 唐新国 | Utilize the method for EAA films test vacuum aluminized film aluminium lamination adhesion |
| US8375804B2 (en) * | 2009-05-15 | 2013-02-19 | VISWELL Technology Co., Ltd. | Apparatus for testing bonding strength of electrical connections and frictionless calibration device for the same |
| CN103760102A (en) * | 2014-01-07 | 2014-04-30 | 天津工程机械研究院 | Detection instrument for bonding strength of ferromagnetic coating of remanufactured parts |
| CN105092379A (en) * | 2015-08-31 | 2015-11-25 | 苏州大学 | Evaluation method of laser cladding layer and matrix bonding strength |
| CN105784504B (en) * | 2016-03-01 | 2019-02-19 | 银邦金属复合材料股份有限公司 | A method of for detecting composite metal plate performance |
| CN106568710A (en) * | 2016-11-16 | 2017-04-19 | 双登集团股份有限公司 | Method for measuring bonding force between lead paste and grid |
| CN107748104B (en) * | 2017-09-05 | 2020-12-08 | 中建商品混凝土有限公司 | Method for testing interlayer bonding strength of 3D printing building structure |
| CN108562537A (en) * | 2018-03-01 | 2018-09-21 | 西安必盛激光科技有限公司 | A kind of laser cladding layer bond strength test method |
| CN109632632B (en) * | 2018-12-20 | 2020-05-22 | 西安交通大学 | Quantitative detection method for microcosmic binding property of single ceramic spreading piece and substrate |
| CN112649360B (en) * | 2021-01-07 | 2022-08-26 | 中国民航大学 | Method for testing bonding strength of silver coating |
-
2003
- 2003-12-15 CN CNB2003101211228A patent/CN1287139C/en not_active Expired - Lifetime
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| CN1629617A (en) | 2005-06-22 |
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Effective date of registration: 20160715 Address after: Yang Yanlu 101407 Beijing city Huairou District Yanqi Economic Development Zone No. 88 Patentee after: GUOBIAO (BEIJING) TESTING & CERTIFICATION CO.,LTD. Address before: 100088, 2, Xinjie street, Haidian District, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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Granted publication date: 20061129 |