1、Designation: B905 00 (Reapproved 2016)Standard Test Methods forAssessing the Adhesion of Metallic and Inorganic Coatingsby the Mechanized Tape Test1This standard is issued under the fixed designation B905; the number immediately following the designation indicates the year oforiginal adoption or, in
2、 the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods describe procedures for assessingthe adhesion of metallic and in
3、organic coatings and other thinfilms to metallic and nonmetallic substrates. Assessment ismade by applying pressure-sensitive tape to a coated surfaceand then utilizing a mechanical device to remove the tape at aregulated, uniform rate and constant angle while simultane-ously recording the removal f
4、orce.1.2 Four methods are described. Methods A1 and A2 areintended primarily for use on parts. Methods B1 and B2 areintended primarily for use in laboratory evaluations. MethodsB1 and B2 are not recommended for testing coatings and filmson polymer substrates.1.3 These test methods may be used to est
5、ablish whether theadhesion of a coating to a substrate is within a required range(between a quantified low and a quantified high level). Deter-mination of actual adhesive forces requires more sophisticatedmethods of measurement. In multilayer systems adhesionfailure may occur between intermediate co
6、ating layers so thatthe adhesion of the total coating system to the substrate maynot necessarily be determined.1.4 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety co
7、ncerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B183 Practice for Preparation of Low-
8、Carbon Steel forElectroplatingB242 Guide for Preparation of High-Carbon Steel for Elec-troplatingB252 Guide for Preparation of Zinc Alloy Die Castings forElectroplating and Conversion CoatingsB253 Guide for Preparation of Aluminum Alloys for Elec-troplatingB254 Practice for Preparation of and Electr
9、oplating onStainless SteelB281 Practice for Preparation of Copper and Copper-BaseAlloys for Electroplating and Conversion CoatingsB320 Practice for Preparation of Iron Castings for Electro-platingB343 Practice for Preparation of Nickel for Electroplatingwith NickelB480 Guide for Preparation of Magne
10、sium and MagnesiumAlloys for ElectroplatingB481 Practice for Preparation of Titanium and TitaniumAlloys for ElectroplatingB482 Practice for Preparation of Tungsten and TungstenAlloys for ElectroplatingB537 Practice for Rating of Electroplated Panels Subjectedto Atmospheric ExposureB538 Method of FAC
11、T (Ford Anodized Aluminum Corro-sion Test) (Withdrawn 1986)3B629 Practice for Preparation of Molybdenum and Molyb-denum Alloys for ElectroplatingB630 Practice for Preparation of Chromium for Electroplat-ing with ChromiumB727 Practice for Preparation of Plastics Materials for Elec-troplatingD1730 Pra
12、ctices for Preparation of Aluminum andAluminum-Alloy Surfaces for Painting1These test methods are under the jurisdiction of ASTM Committee B08 onMetallic and Inorganic Coatings and are the direct responsibility of SubcommitteeB08.10 onTest Methods.Current edition approved Nov. 1, 2016. Published Nov
13、ember 2016. Originallyapproved in 2000. Last previous edition approved in 2010 as B905 00 (2010).DOI: 10.1520/B0905-00R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, ref
14、er to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D1731 Practices for Preparation of Hot-Di
15、p Aluminum Sur-faces for PaintingD1732 Practices for Preparation of Magnesium Alloy Sur-faces for PaintingD2370 Test Method for Tensile Properties of Organic Coat-ingsD3330/D3330M Test Method for PeelAdhesion of Pressure-Sensitive TapeD3359 Test Methods for Measuring Adhesion by Tape Test3. Summary
16、of Test Method3.1 Pressure-sensitive tape is adhered to the surface of thecoating and then removed utilizing a motorized mechanicaldevice that peels the tape at a constantly maintained angle andcontrolled rate of peel.Adigital recording force gage is used torecord the maximum peel force.NOTE 1All du
17、e care must be taken to ensure that test specimens arehandled and stored such that they are not subjected to conditions that willcause deleterious effects. These conditions include but are not limited tohandling without the use of gloves, storing in areas that accumulate dust,areas of high humidity
18、or where the sample may be subjected to fumes orvapors that might condense on the sample.3.2 Methods A1 and A2:3.2.1 In these methods, which are nondestructive, the mea-surement area used is the unbroken coating surface with peelangles of 90 and 180 respectively.3.2.2 Adhesion is assessed in terms o
19、f “passed,” if thecoating does not detach, or “failed,” if the coating detacheswithin the specified range of peel forces as recorded during thetest.3.3 Methods B1 and B2:3.3.1 In these methods, which are destructive, the measure-ment area used is a broken coating surface created by scoringa lattice
20、pattern through the coating to the substrate and peelingat angles of 90 and 180, respectively.3.3.2 Adhesion is assessed qualitatively on the 0 to 5 scale.4. Significance and Use4.1 If a coating is to fulfill its function of protecting orimparting unique properties to the surface of a substrate, itm
21、ust adhere to the substrate for the expected service life.Because surface preparation (or lack of it) has a drastic effecton adhesion of coatings, a test method for evaluating adhesionto different surface treatments or of different coatings to thesame treatment is of considerable use to the industry
22、.4.2 The limitations of all adhesion methods, and the specificlimitation of this test method to lower levels of adhesion (see1.3) should be recognized before using it. These test methodsare mechanized adaptations of Test Methods D3359; therefore,the intra- and interlaboratory precision of these test
23、 methodsare similar to Test Methods D3359 and to other widely-accepted tests for coated substrates, for example, Test MethodD2370, but this is partly the result of it being insensitive to allbut large differences in adhesion. The pass-fail scale of 0 to 5for Method B1 and B2 was selected deliberatel
24、y to avoid afalse impression of being sensitive.5. Apparatus and Materials5.1 Peel Test FixtureThe fixture shall consist of a frame towhich the specimen is rigidly clamped, and a moveable beamby which the tape is pulled off under a constant peel angle of90 (MethodA1 and B1) or 180 (MethodA2 and B2).
25、 The peelrate should be controllable between 20 mm/s and 200 mm/s forMethod A1 and B1 and between 14 mm/s and 140 mm/s forMethods A2 and B2. A recording force gage is fitted betweenthe tape grip and the movable beam (see Fig. 1).5.2 Pressure-Sensitive TapeUnless otherwise specified inthe document re
26、ferencing this test, the tape shall be 25 mmwide, semitransparent, pressure-sensitive tape with an adhesionstrength of 43 6 5.6 g/mm or N/100 mm width when tested inaccordance with D3330/D3330M. The adhesion shall notchange by more than + 6.5 % of its mean value within 12months. The backing of the t
27、ape may consist of fiber-reinforcedcellulose acetate, unplasticized poly (vinyl chloride), or poly-ester film. When results obtained in different laboratories donot agree it is recommended that the test be repeated using tapefrom the same batch.5.3 RollerThe roller,4which is hand operated, consists
28、ofa steel roller 85 6 2.5 mm in diameter and 45 6 1.5 mm inwidth, covered with rubber approximately 6 mm in thickness,having a Shore scale A durometer hardness of 80 6 5. Thesurface of the roller shall be a true cylinder void of any concaveor convex deviations. The mass of the roller shall be 2040 6
29、 45g.NOTE 2A standardized roller is used in place of the pencil eraser ofTest Methods D3359 because of the variety of rubber and abrasivesformulations used to make pencil erasers. A further consideration was theextended range of localized pressures that could be exerted by the penciland eraser.TEST
30、METHOD ANONDESTRUCTIVE, PARTS TAPE TEST6. Test Specimen6.1 PartsThis test normally is performed on parts. Anyrequirements for test specimens will be found in the documentspecifying their use.NOTE 3When specified by the document referencing this test, thecoated parts shall be subjected to a prelimina
31、ry exposure, such as waterimmersion, salt spray, or humidity, before conducting the tape test.7. Procedure7.1 Test AreaSelect a flat area, on a significant surface,free of blemishes and minor surface imperfections. Ensure thatthe surface is clean and dry. Extremes in temperature orrelative humidity
32、may affect the adhesion of the tape or thecoating.7.2 Tape SectionRemove two complete laps of thepressure-sensitive tape from the roll and discard. Remove an4The sole source of supply of the apparatus known to the committee at this timeis Pressure-Sensitive Tape Council (PSTC), 104 Wilmot Rd., Suite
33、 201, Deerfield,IL 60015. If you are aware of alternative suppliers, please provide this informationto ASTM International Headquarters. Your comments will receive careful consid-eration at a meeting of the responsible technical committee,1which you may attend.B905 00 (2016)2additional length at a st
34、eady (that is, not jerked) rate and cut apiece off at least 100 mm long plus an additional length equalto the space between the test surface and the grip on the fixturefor pulling the tape.7.3 Tape PlacementCarefully place the tape on the area ofcoating to be tested and lightly press and smooth the
35、tape intoplace, taking care to prevent any entrapment of air bubblesbetween the tape and the coating. Once the tape is in place, rollthe tape firmly; once in each lengthwise direction (see 5.3). Thecolor under the semi-transparent tape is a useful indication ofwhen good contact has been made.7.4 Tim
36、e, Rate, and Angle:7.4.1 Within 90 6 30 s of the tape application, fasten thespecimen onto the fixture, placing the free end of the tape in thepulling grip. The apparatus should be set to maintain thenormal 90 peel angle, Method A1 (see Notes 4 and 5).7.4.2 Pull the tape at a constant rate until onl
37、y about 20 mmof tape remains in contact with the coating. The residualadhering tape can be removed manually after assessing adhe-sion on the area peeled off. This final removing of the residualtape is not a constituent of the adhesion test.NOTE 4As far as possible, preference should be given to Meth
38、od A1(90 peel angle) due to the stress-strain behavior of the tape. If the coatingto be tested is not approachable for 90 testing, for example, at the wallside inside a housing, Method A2 (180 peel angle) may be applied.NOTE 5At a peel angle of 90, the peel rate of the tape from thecoating surface i
39、s equal to the pull rate, that is, the velocity by which thefree end of the tape is moved in the loading direction, whereas in a peelangle of 180, the peel rate of the tape is only half the pull rate.7.5 Peel Force ControlRead the maximum value of peelforce recorded from the force registration gauge
40、. If the forcevalue recorded is greater than 2.5 N 6 the force value specifiedin the document referencing this test, the test shall be repeated.Use a correspondingly lower or higher rate of peel until themaximum value is within 62.5 N.NOTE 6For metallic coatings on polymeric substrates, the typicalf
41、orce range is:15N25NforMethod A120N35NforMethod A27.6 EvaluationInspect both the area of coating and thetape for evidence of flaking or detachment. Repeat the test atanother area of the part. Perform sufficient tests to ensure thatthe adhesion evaluation is representative of the whole surface.8. Rep
42、ort8.1 The test report shall contain the following:8.1.1 Method (A1 or A2),8.1.2 Type of coating,8.1.3 Any intermediate layers,8.1.4 Substrate material,NOTE 1Item 1 is the pneumatic cylinder traverse channel; 2 is the pneumatic pull cylinder; 3 is the pneumatic cylinder traverse which is shown inthe
43、 90 pull position; 4 is the digital force gage, which is attached to the piston rod; 5 is the tape grip; 6 is the part/specimen hold down; 7 is the fixturebase; 8 is the free end of the tape; 9 is a coated specimen; 10 is the piston. By a simple displacement of the traverse, the fixture can be modif
44、ied for 180testing. The pull rate is adjustable between 20 and 250 mm/s.FIG. 1 Schematic of Tape Test FixtureB905 00 (2016)38.1.5 Type of tape used,8.1.6 Peel angle,8.1.7 Rate of peel,8.1.8 Any environmental exposure, and8.1.9 Any failure at intermediate layers.8.2 Report the test results as:p/Fmax(
45、1)orf/Fmax(2)where:p = passed (no coating detachment),f = failed (coating detachment), andFmax= maximum registered peel force.9. Precision of Test Method A9.1 An interlaboratory study of this test method reviewedtape peel measurements on various coatings under several peelconditions. The results sho
46、wed that maximum peel force of thetape depended significantly on the type of coating, the type oftape, the peel rate and the peel angle. There was an insignifi-cant relationship to the pressure used for adhering the tape tothe coating.9.2 The results of coating adhesion assessments obtained ondiffer
47、ent coatings should only be compared when the maxi-mum deviation recorded, does not exceed 62.5 N.9.3 The results of coating adhesion assessments obtainedwith Method A1 should not be compared with the resultsobtained with Method A2.TEST METHOD BDESTRUCTIVE, CROSS CUT TAPE TESTFOR LABORATORY INVESTIG
48、ATION10. Apparatus and Materials10.1 In addition to the apparatus and materials in 5.1 thefollowing also are required:10.1.1 Cutting ToolA sharp razor blade, scalpel, knife orother cutting device having a cutting edge angle between 15and 30 that will make either a single cut or several cuts atonce.
49、It is of particular importance that the cutting edge be ingood condition.10.1.2 Cutting GuideIf cuts are made manually (as op-posed to a mechanical apparatus) a steel or other hard metalstraight edge or template should be used to ensure straight cuts.10.1.3 RuleA tempered steel rule graduated in 0.5 mmunits is required for measuring individual cuts.10.1.4 IlluminationA light source is recommended fordetermining whether the cuts have been made through the filmto the substrate.10.1.5 Magnifying GlassAn illuminated magnifier to beused while making i
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