CN111610145A - Method and device for testing rotary target - Google Patents

Abstract

The invention provides a method and a device for testing a rotary target, relates to the technical field of targets, can truly and effectively represent a weak area of the rotary target, and solves the problem that the rotary target lacks an effective testing method and device. The rotary target testing method comprises sampling, sample preparation and testing. Sampling: intercepting a rotary target material with a preset length to obtain a sample to be tested, wherein the sample to be tested comprises a part of backing tube and a coating on the part of backing tube, or forming the coating on the backing tube according to a preparation process of the coating of the rotary target material, so as to obtain the sample to be tested, and the backing tube is used for simulating the backing tube of the rotary target material. Preparing a sample: the strip test panel was adhered to the outside surface coating of the test specimen. And (3) testing: the sample with the elongated test plate was fixed, and then a tensile force for separating the elongated test plate from the sample was applied to one end of the elongated test plate to test the adhesive strength of the coating of the sample.

Description

Method and device for testing rotary target

Technical Field

The disclosure relates to the technical field of targets, and in particular relates to a method and a device for testing a rotary target.

Background

The existing thin-film solar cell chip usually adopts a magnetron sputtering mode to form a window layer, an absorption layer and other functional film layers on a substrate, and a target material is a target material bombarded by high-speed charged particles in magnetron sputtering, namely a sputtering source. The thin film solar cell chip is usually prepared by using a rotary target material, which usually comprises a backing tube and a coating layer, such as an alloy powder coating, coated on the outer peripheral surface of the backing tube.

The rotary target material often has the undesirable phenomena of target cracking and the like in the use process because the binding force of the coating is insufficient. The current method of characterizing coating adhesion is: the coating is made into a flat cylindrical sample of a thin plate, the flat cylindrical sample is bonded on one end face of a substrate block, then a loading block is bonded with the other surface of the flat cylindrical sample, and then a mating part formed by the substrate block, the coating sample and the loading block is fixed on a tool to be stretched (see a cylindrical flat plate tensile test, GB8642-2002), and the tensile bonding strength is tested. However, the method cannot truly and effectively represent the real weak area of the rotating target material, and lacks practical guiding significance.

Disclosure of Invention

The embodiment of the disclosure provides a method and a device for testing a rotary target, which can truly and effectively represent a weak area of the rotary target and solve the problem that the rotary target lacks an effective testing method and device.

In order to solve the problem that the rotating target lacks an effective testing method and device, the embodiment of the disclosure provides the following technical scheme:

a method of testing a rotary target comprising a backing tube and a coating formed on an outer peripheral surface of the backing tube, the method comprising:

sampling: intercepting a preset length of the rotary target material to obtain a sample to be tested, wherein the sample to be tested comprises a part of the backing pipe and a coating on the part of the backing pipe, or,

forming a coating on a liner tube according to the preparation process of the coating of the rotary target material so as to obtain a sample to be tested, wherein the liner tube is used for simulating a backing tube of the rotary target material;

preparing a sample: adhering a strip-shaped test plate to the outer side surface coating of the test sample;

and (3) testing: the sample with the elongated test plate was fixed and then a pulling force was applied to one end of the elongated test plate to separate the elongated test plate from the sample and test the adhesion strength of the sample coating.

In some embodiments, the sample preparation step further comprises, before the step of adhering the strip-shaped test board to the outer side surface coating of the test sample: and separating the part of the coating to be tested from the rest of the coating on the outer side surface of the sample.

In some embodiments, the sample preparation step further comprises, before the step of adhering the strip-shaped test board to the outer side surface coating of the test sample: the outside coating of the sample was divided into multiple sections, one for each sample coating.

In some embodiments, the segmentation of the outer side coating of the test specimen is achieved by notching the coating.

In some embodiments, the specimen is cylindrical; in the sample preparation step, before the strip-shaped test board is pasted on the outer side surface coating of the sample, the method further comprises the following steps:

grooving at two ends of the sample along the cylindrical outer side surface of the sample to separate a part of coating to be tested from the coatings at two ends of the sample;

grooving is carried out on the cylindrical outer side coating of the sample along the length direction of the sample, and the cylindrical outer side coating of the sample is divided into a plurality of parts.

In some embodiments, in the sample preparation step, the strip-shaped test plate is pasted on the outer side surface coating of the test sample through an adhesive; and the fracture strength of the binder is larger than that between the coating of the target material and the backing tube.

In some embodiments, prior to affixing the elongated test plate to the coating on the exterior side of the test specimen, further comprising: the coated surface of the test specimen and the working surface of the test plate were subjected to roughening treatment.

In some embodiments, in the testing step, one end of the test sample is fixed on a base of a universal tensile testing machine, and then the end of the elongated test plate corresponding to the other end of the test sample is tightly connected with a stretching mechanism of the universal tensile testing machine.

Some embodiments of the present disclosure also provide a rotary target testing apparatus, comprising:

the fixing device is used for fixing the sample prepared in the rotary target testing method on the base;

the test device comprises an elongated test plate and a stretching device, wherein the elongated test plate is used for being bonded on the outer side coating of the test sample; the tensile device is used for applying a tensile force for separating the test plate from the coating of the sample to one end of the strip-shaped test plate so as to test the adhesive strength of the coating of the sample.

In some embodiments, the testing device further comprises a tooling platform, and the fixing device is arranged on the tooling platform and used for fixing the test sample on the tooling platform; the tooling platform is used for being fixed on the base.

In some embodiments, the stretching device is a stretching mechanism of a universal tensile testing machine, and the base is a base of the universal tensile testing machine;

the testing device also comprises a connecting piece which is used for tightly connecting one end of the strip-shaped testing plate with the stretching mechanism of the universal tensile testing machine.

In some embodiments, the fixture comprises:

a U-shaped bolt and a nut matched with the U-shaped bolt, wherein the U-shaped bolt is used for fixing the first end of the sample, both ends of the U-shaped bolt are provided with threads,

the mounting block is used for fixing the second end of the test sample, the mounting block is provided with a notch matched with the test sample, the edge of the notch is provided with an avoidance port corresponding to the strip-shaped test plate on the test sample, and two sides of the notch of the mounting block are respectively provided with a threaded hole for mounting the screw;

the tool platform is provided with first through holes corresponding to two ends of the U-shaped bolt, and the tool platform is provided with second through holes corresponding to the threaded holes.

In some embodiments, a fixing hole is disposed at one end of the strip-shaped test plate to which a tensile force is applied;

the connecting piece comprises a pull rod and two bolts, one end of the pull rod is inserted into the fixing hole of the strip-shaped test plate, and the other end of the pull rod is clamped in a clamp of the universal tensile testing machine; the two ends of the pull rod are respectively provided with a first plug pin hole, and the position of the strip-shaped test board, which corresponds to the first plug pin hole of the pull rod accommodated in the fixing hole, is provided with a second plug pin hole; one of the two pins is used for passing through the second pin hole of the strip-shaped test board and the first pin hole of the first end of the pull rod to fix the strip-shaped test board and the first end of the pull rod, and the other of the two pins passes through the first pin hole of the second end of the pull rod to be clamped on the clamp during testing.

According to the rotating target material testing method provided by the embodiment of the disclosure, a coating is formed on a liner tube according to a preparation process of the coating of the rotating target material, or a preset length is directly cut from the rotating target material to be used as a sample, then a testing plate is bonded on the coating of the sample, a pulling force for separating the strip-shaped testing plate from the sample is applied to one end of the strip-shaped testing plate, and the bonding strength of the coating of the sample is tested. In the test method, if the preset length is directly intercepted from the rotary target to be used as the sample, the obtained sample comprises the backing tube and the coating positioned on the backing tube, and the distribution condition of the coating of the rotary target on the backing tube can be really and effectively represented. Or, the test method forms a coating on the liner tube for simulating the backing tube according to the preparation process of the coating of the rotary target material to prepare the sample, and the sample obtained in this way comprises the liner tube and the coating on the liner tube. In addition, when the testing method is used for testing, a pulling force for separating the testing plate from the sample is applied to one end of the strip-shaped testing plate, the situation that the coating is torn from the backing tube or the liner tube for simulating the backing tube is simulated, the actual application situation of the rotary target material is closer, the bonding strength of the coating and the backing tube (or the liner tube) can be tested, and the method has guiding significance for optimizing the technological parameters for manufacturing the target material and screening and evaluating the performance of the target material.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments of the present disclosure will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments used in the description of the present disclosure, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a flow chart of a method of rotating target testing provided by some embodiments of the present disclosure;

fig. 2 is a flow chart of another method of rotary target testing provided by some embodiments of the present disclosure;

FIG. 3 is a schematic illustration of a sample obtained according to some embodiments of the present disclosure;

FIG. 4 is a schematic developed view of the cylindrical outer side of the test specimen according to FIG. 3;

FIG. 5 is a schematic cross-sectional view of the specimen shown in FIG. 3;

FIG. 6 is an enlarged schematic view of detail B from FIG. 5;

FIG. 7 is a first schematic structural view of an elongated test plate according to some embodiments of the present disclosure;

FIG. 8 is a second structural schematic view of an elongated test plate according to some embodiments of the present disclosure;

FIG. 9 is a schematic diagram of a structure of an elongated test plate according to some embodiments of the present disclosure;

FIG. 10 is a schematic structural view of a mounting platform with a test specimen secured thereto provided in accordance with some embodiments of the present disclosure;

FIG. 11 is a schematic illustration of the non-tension end side of a mounting platform with a test specimen secured thereto, provided in accordance with some embodiments of the present disclosure; and

figure 12 is a schematic view of a bayonet card above a clamp in experiments performed according to some embodiments of the present disclosure.

Description of reference numerals:

1-an elongated test plate; 101-a fixing hole, 102-a second bolt hole and 2-a pull rod; 3, inserting a pin; 4-testing the sample; 41-a liner tube; 42-sample coating; 43-grooves; 431-a first groove, 432-a second groove, 5-a tooling platform; 6-pipe inner diameter supporting block; 7-U-shaped bolt; 8, mounting a block; 81-notch; 82-avoidance port; 9-a clamp; 10-a screw; 11-a nut; 12-a butterfly washer; 13-a gasket; 14-a nut; 15-axis.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The inventor finds that the target material body and the backing tube have too low adhesion force, which often causes target cracking and other undesirable phenomena during the use process of the target material. At present, the method for characterizing the spraying adhesion is as described in the background section, the coating is made into a flat cylindrical sample, and then the cylindrical sample is adhered on a tool to be stretched, and the tensile bonding strength is tested. For the rotary target material manufactured by adopting the spraying method, if the method is adopted for testing, the following defects are often existed: 1) the method is characterized in that the bonding force inside a flat cylindrical sample is the bonding force inside a coating, and the real bonding strength of the coating on the curved surface of the rotating target cannot be really characterized; 2) for targets, failure often occurs between the coating and the backing tube, with less occurrence of failure occurring inside the target. That is, the bonding weak link is between the backing tube and the bonding layer, and the method cannot characterize the real weak area of the rotating target material.

Some embodiments of the present disclosure provide a method for testing a rotary target comprising a backing tube and a coating formed on an outer circumferential surface of the backing tube, as shown in fig. 1, the method comprising:

101. sampling: forming a coating on a liner tube according to the preparation process of the coating of the rotary target material so as to obtain a sample to be tested, wherein the liner tube is used for simulating a backing tube of the rotary target material, or directly intercepting the rotary target material with a preset length so as to obtain the sample to be tested, and the sample to be tested, namely the intercepted rotary target material with the preset length, comprises a part of the backing tube and the coating positioned on the part of the backing tube;

102. preparing a sample: adhering a test board to the outside surface coating of the test specimen;

103. and (3) testing: the samples with test panels were fixed and then the cohesive strength of the sample coating was tested by applying a pulling force at one end of the test panel that caused the test panel to separate from the sample. The test board is, for example, an elongated test board.

In the sampling step, the goal is to obtain a sample that is consistent with the rotating target. The rotary target generally comprises a backing tube and a coating formed on the backing tube, and therefore the sample also needs to comprise a corresponding structure. For example, a preset length can be directly cut from the rotary target material to be used as a sample to be tested; of course, the whole rotary target can be directly selected as the sample to be tested. The sample obtained by sectioning comprised a portion of the backing tube and a coating on top of this portion of the backing tube. The length of the specimen is generally such that the length of the specimen is compatible with the equipment used in the testing phase.

Of course, the sample can be obtained in conformity with the rotating target in other ways. For example, a test sample of the rotary target is obtained by preparing a backing tube and then forming a coating on the backing tube according to a preparation process of the coating of the rotary target to be tested. The liner tube is used to simulate the backing tube of the rotary target, so the outer side of the liner tube is consistent with the outer side of the backing tube of the rotary target except for the length of the liner tube, including but not limited to the material, curvature, roughness and the like of the outer side of the liner tube. Taking a cylindrical liner as an example, the outside surface of the liner refers to the cylindrical outer surface of the liner.

In some embodiments, a cylindrical backing tube is prepared for simulating the backing tube of a rotary target, and a target coating is then formed on the cylindrical backing tube according to a preparation process consistent with the process for preparing the coating of the rotary target to be tested. The samples thus produced included a cylindrical backing tube (backing tube used to simulate a rotating target) and a target coating on the cylindrical backing tube.

For some rotary targets, especially ceramic targets, the target itself is relatively brittle, so that the target cannot be directly intercepted and sampled from the target, and in such a scene, a method for forming a target coating on a liner tube can be adopted to obtain a sample.

In the sample preparation step, the test board is pasted on the outer side surface coating of the sample. The outer side coating of the sample refers to the coating that is distributed over the cylindrical outer periphery of the liner. If the liner presents an end face, the exterior side coating of the sample does not include a coating disposed on the end face of the liner. For example, using a cylindrical liner as an example, the test strip can be coated onto the cylindrical outside surface of the test specimen by applying an adhesive to the coating on the cylindrical outside surface of the test specimen and then adhering the test strip to the coating on the cylindrical outside surface of the test specimen. Alternatively, the adhesive may be applied to both the coating layer on the cylindrical outer side surface of the sample and the strip-shaped test plate, and the strip-shaped test plate may be adhered to the coating layer.

In the testing step, a tensile force is applied to one end of the test plate to separate the test plate from the sample, and the adhesive strength of the sample coating is tested. For example, the application of tensile force during the testing step can be accomplished by a universal tensile testing machine. In some embodiments, a universal tensile tester is used to apply tension to one end of an elongated test plate, using a tensile mode test, until the test specimen breaks. The measured result is the breaking strength of the sample.

The rotating target testing method provided by the embodiment of the disclosure is closer to the practical application occasion of the cylindrical rotating target, can accurately test the breaking strength of the cylindrical target, has guiding significance for optimizing the technological parameters for manufacturing the target and screening and evaluating the performance of the target, and can also be used for guiding the optimization of the technological parameters in the spraying process.

In some embodiments, the partial coating to be tested is separated from the rest of the coating on the outer side of the sample after sampling and before the strip test board is adhered to the coating on the outer side of the sample, so that the rest of the coating can be prevented from having adverse effects on the test result of the partial coating to be tested. The specific segmentation mode is not limited, and only the partial coating to be tested is not connected with the adjacent non-test partial coating, so that the partial coating to be tested is not influenced during testing. The partial coating to be tested can be separated from the rest of the coating on the outer side, for example by grooving the coating. The partial coating to be tested means the portion of the coating to be bonded to the elongated test panel, and the area of the partial coating to be tested is equal to or less than the area of the elongated test panel.

In some embodiments, after sampling, the elongated test plate is divided into a plurality of portions, one for each specimen coating, before being affixed to the outer side coating of the specimen. Each sample coating can be used for carrying out a bonding strength test, and a plurality of testable sample coatings can be formed by sampling once, so that material waste is avoided, and the test efficiency is improved. The method is used for specifically dividing the coating on the outer side surface of the sample into a plurality of parts, and the specific dividing mode is not limited, and the sample coatings formed after division are only required to be free from mutual influence in the test. For example, a plurality of dividing grooves (e.g., grooves 43) can be formed by cutting the coating on the outer side of the sample, and the depth and width of the dividing grooves are determined so that the adjacent sample coatings do not affect each other during the test. In some embodiments, milling is used to perform grooving, so as to achieve independence or separation of different tensile sample coatings, i.e. different sample coatings do not interfere with or affect each other.

In some embodiments, the sample is processed after sampling and prior to applying the strip test plate to the outer side coating of the sample, including: dividing the outer side coating of the sample into a plurality of parts, wherein each part corresponds to a sample coating; then, for each sample coating, determining the part of the coating for testing on the sample coating according to the size of the test board, and separating the part of the coating to be tested from the rest of the coating on the outer side surface of the sample.

As shown in fig. 3 and 4, in some embodiments, the test piece 4 is cylindrical; as shown in fig. 2, after sampling, before adhering an elongated test plate to the outer side surface coating of the test specimen, the test method further comprises:

102A, grooving (such as a first groove 431 in fig. 4) along the cylindrical outer side surface of the sample at two ends of the sample, and separating the partial coating to be tested from the coatings at two ends of the sample;

102B, the coating on the cylindrical outer side of the sample is grooved (e.g., second grooves 432 in fig. 4) along the length of the sample to divide the coating on the cylindrical outer side into a plurality of sections.

In some embodiments, for the convenience of testing, the partial coatings at the two ends of the sample are removed, but the coatings at the two ends of the sample may not be completely removed or completely removed along the edges of the partial coatings to be tested, which may affect the testing effect of the partial coatings to be tested, and for this reason, the two ends of the sample are grooved along the outer side of the cylindrical shape, such as the first grooves 431, to separate the partial coatings to be tested from the coatings at the two ends of the sample.

In some embodiments, the elongated test panel is adhered to the outer coating of the test specimen by an adhesive, which itself has a greater breaking strength than the coating of the target material and the backing tube, to ensure that failure does not occur between the adhesive and the test panel.

In some embodiments, the preparing step further comprises, prior to applying the adhesive: the coating of the part to be tested of the sample is processed to ensure that the coating of the part to be tested is matched with the strip-shaped test plate, so that the adhesion area of the coating of the part to be tested and the strip-shaped test plate can be increased. Taking a cylindrical liner tube as an example, because the coating to be tested is distributed on the cylindrical outer side surface of the sample, the outer surface of the coating has a certain curvature, and the strip-shaped test board is flat and has a limited contact surface with the coating, so that the bonding strength of the existing bonding agent is not enough, the strip-shaped test board cannot be well bonded on the coating, and particularly under the situation that the radius of the rotary target material to be tested is small and the requirement on the coating bonding strength of the rotary target material is high. The existing adhesive has insufficient adhesive strength, which means that when the strip-shaped test board is adhered to the coating, the adhesive part is broken and fails first during testing, and the testing purpose cannot be realized. At this time, the coating of the part to be tested of the sample is processed, so that the coating of the part to be tested is matched with the strip-shaped test board, and a large gap is not generated during bonding. In addition, the coated surface of the test specimens and the working surface of the test plate were roughened.

For ease of understanding, the following description is made in connection with an exemplary embodiment, which provides a test method, as shown in fig. 3-12, comprising:

sampling: spraying a corresponding target coating on the cylindrical liner tube 41 or directly cutting a sample 4 with a preset length from the target.

Preparing a sample:

a sample preparation step I, sample treatment: after sample 4 treatment, the dimensions of sample 4 and the effective target coating sample size (in inches) are shown in fig. 3-6, with a total sample length of 11.5 inches, with the cylindrical outer side of sample 4 having 9 effective test sample coatings 42 formed thereon, independent of each other, and an effective sample coating 42 having a length of 6 inches. The sample processing process comprises:

(1) the coating was removed from both ends of sample 4.

(2) The sample 4 is grooved along its cylindrical outer circumference at both ends, for example, the first grooves 431, to such a depth that the coating possibly present at both ends does not affect the coating to be tested.

(3) On the cylindrical outer circumferential surface of the sample 4, grooves, such as second grooves 432, are engraved along the length direction of the sample 4 (i.e., parallel to the central axis direction of the cylindrical sample 4), with a depth such as to split the coating or remove the in-groove coating, dividing the cylindrical outer surface of the sample 4 into a plurality of sample coatings 42. As shown in fig. 2-5, the cylindrical outer side coating of sample 4 was divided into 9 sample coatings 42. The grooving of the sample can be carried out, for example, by milling.

The groove 43 formed after notching was 0.25 inches wide. To ensure that adjacent sample coatings 42 are not affected during testing, the embodiment shown in the drawings employs a double scoring, i.e., two grooves 43 are present between adjacent sample coatings 42. Other dimensions of the sample are shown in fig. 4-6, and since the specific dimensions are only examples, the implementation effect of the embodiment of the disclosure is not affected, and will not be described in detail herein.

A second sample preparation step: one of the samples 4 is uniformly coated with a two-component adhesive and then a strip of test board 1 of uniform width, such as a strip of stainless steel plate, is bonded in registration with the surface of its adhesive-coated sample coating 42. The selected binder generally requires that the fracture strength of the binder is larger than that of the target material, so that the fracture is avoided at the junction of the binder and the target material. Meanwhile, the binder can be selected from room temperature curing binders. Such as an elandite binder.

To ensure that failure does not occur between the adhesive and the strip 1, the sample 4 and the strip 1 are roughened with sandpaper before the adhesive is applied. Meanwhile, the adhesive is coated on the coating surfaces of the strip test plate 1 and the sample 4, the surfaces of the strip test plate 1 and the sample 4 are matched, and no gap can be formed in the middle.

As shown in fig. 7, the end of the strip test board 1 to which a tensile force is applied is provided with a fixing hole 101. Second plug holes 102 are also provided on the side surfaces of the end, i.e., on both side surfaces that are in contact with the surface on which the fixing holes 101 are provided. Exemplary dimensions of the strip test board 1 are shown in fig. 7-9, and since the specific dimensions can be designed according to actual requirements, the implementation effect of the technical solution of the present disclosure is not affected, and will not be described in detail herein.

And (3) testing: after the adhesive is cured, the sample 4 is loaded on a specific tooling platform 5. The tooling platform 5 is structurally shown in fig. 9 and 10.

In this step, the rotary target testing apparatus provided in some embodiments of the present disclosure is used, including: frock platform 5, fixing device, universal tensile testing machine and connecting piece. In this example, a universal tensile tester is used to apply a tensile force to one end of the strip 1. The fixing device is arranged on the tooling platform 5 and used for fixing the test sample 4 on the tooling platform 5; the tooling platform 5 is fixed on the base of the universal tensile testing machine. The connecting piece is used for connecting one end of the strip-shaped test plate 1 with a stretching mechanism of the universal tensile testing machine in a fastening manner. For example, the connector fastens one end of the elongated test board 1 to a jig of a universal tensile testing machine.

Fig. 9 and 10 are schematic structural views of the tool table 5 to which the test specimen 4 is fixed. The fixing device includes: u-shaped bolt 7 and with the supporting nut 11 of U-shaped bolt 7, U-shaped bolt 7 is used for the first end of fixed sample 4, U-shaped bolt 7 both ends are provided with the screw thread. The fixing device further includes: the mounting block 8 and the screw 10, the mounting block 8 is used for fixing the second end of the sample 4, the mounting block 8 has a notch 81 matched with the sample 4, the edge of the notch 81 is provided with an avoiding opening 82 corresponding to the strip-shaped test board 1 on the sample 4, and two sides of the notch 81 of the mounting block 8 are respectively provided with a threaded hole (not shown) for mounting the screw 10. The tool platform 5 is provided with first through holes corresponding to two ends of the U-shaped bolt 7, and the tool platform 5 is further provided with second through holes corresponding to the screws 10. The second through hole may also be provided as a through hole with an internal thread.

The mounting block 8 fixes the sample 4 through the notch 81, but the edge of the avoiding opening 82 has a certain distance with the strip-shaped test board 1, so that a space required for the strip-shaped test board 1 to be torn from the sample coating 42 in the testing process is reserved. In some embodiments, spacers of different thicknesses may also be designed between the notch 81 and the test sample 4 to accommodate test samples 4 of different diameter sizes.

In some embodiments, the test device further comprises an in-tube support structure for placement in a backing tube of a test specimen or a backing tube for simulating a backing tube during testing. For example, the pipe inner support structure may include two pipe inner support blocks 6, a shaft 15 connecting the two pipe inner support blocks 6, and a nut 14. The shaft 15 and nut 14 may adjust the spacing between the two tube inner diameter support blocks 6. The pipe inner diameter supporting block 6, the shaft 15 and the nut 14 form a pipe inner diameter supporting structure, so that a liner pipe 41 of the liner pipe or a simulation liner pipe is prevented from being extruded and deformed under the fixing action of the mounting block 8, the U-shaped bolt 7 and the tooling platform 5, and test distortion caused by extrusion deformation is avoided.

When the nut 11 is installed to fix the U-bolt 7, the washer 13 may be installed first. In some embodiments, the butterfly washer 12 may be installed first when the installation screw 10 is used to fix the installation block 8.

And one end of the tooling platform 5 fixed with the sample 4 is fixed on a base of the universal testing machine, and the other end of the tooling platform is tightly connected with a clamp 9 of the universal testing machine. When the sample is loaded, a level bar is needed to ensure that the sample and the tooling platform 5 are placed horizontally.

And fixing the tooling platform 5 on a base of the universal testing machine by using screws. The other end pull rod is clamped with a universal tester clamp 9, and meanwhile, two ends of the plug pin 3 are fixed on two sides of the universal tester clamp 9. In the tensile mode, the tensile speed can be generally selected to be 1mm/min, and the test is carried out until the test piece is broken. The measured result is the breaking strength of the sample.

In a similar manner, the breaking strength of 8 other test specimens in the circumferential direction of the specimen 4 can be measured

The present example also provides a newly designed connector for fastening one end of the elongated test board 1 to the jig of the universal tensile testing machine. The connecting piece comprises a pull rod 2 and two bolts 3, one end of the pull rod 2 is used for being inserted into the fixing hole 101 of the strip-shaped test plate 1, and the other end of the pull rod 2 is used for being clamped in a clamp of the universal tensile testing machine; the two ends of the pull rod 2 are respectively provided with a first bolt hole 201, and the position of the strip-shaped test board 1, which corresponds to the first bolt hole 201 of the pull rod 2 accommodated in the fixing hole 101, is provided with a second bolt hole 102; one of the two pins 3 is used to pass through a first pin hole 201 at a first end (lower end in fig. 10) of the tie bar 2 and a second pin hole 102 of the elongated test plate 1 to fix the elongated test plate 1 to the tie bar 2, and the other of the two pins 3 passes through the first pin hole 201 at a second end (upper end in fig. 10) of the tie bar 2 to be caught on the jig at the time of testing, as shown in fig. 12.

The above-described rotary target testing apparatus is only an exemplary embodiment, and a universal tensile testing machine may not be used.

In some embodiments of the present disclosure, there is also provided a rotary target testing apparatus comprising:

a base and a fixing device for fixing the sample 4 prepared in the above-described rotary target testing method to the base; the base is used for fixing the sample 4, and those skilled in the art can design the base by referring to the structure of the tooling platform, which is not limited herein.

The test device comprises a strip-shaped test plate and a stretching device, wherein the strip-shaped test plate is used for being stuck on the coating layer on the outer side of the test sample 4; the tensile device is used for applying a tensile force for separating the test plate from the coating of the sample to one end of the strip-shaped test plate so as to test the adhesive strength of the coating of the sample.

The embodiment of the present disclosure does not limit the specific structures of the base, the fixing device, and the stretching device, as long as the corresponding functions can be realized.

Optionally, in some embodiments, the testing device further includes a tooling platform, and the fixing device is disposed on the tooling platform and is used for fixing the test sample to the tooling platform; the tooling platform is used for being fixed on the base.

Embodiments of the present disclosure are manufactured by spraying powder onto a backing tube or cutting a specified length directly from a target material and then machining into a sample of a particular shape. On the circumference of a test specimen, a plurality of test specimen coatings effective for testing the breaking strength can be prepared by dividing. The embodiment of the disclosure also provides a testing device, which comprises a set of base and a set of testing clamp for fixing the sample, so that the fracture strength of the cylindrical target material is represented.

The embodiment of the disclosure provides a characterization method and a device for characterizing the breaking strength of a rotary target, and the method can truly characterize the actual bonding force of the interior of the rotary target, such as a cylindrical target, and the target and a liner tube, and is closer to the actual application occasion. The test result has practical guiding significance for optimizing the actual spraying process parameters and screening the target material.

In some embodiments, an in-tube support structure is further included for placement in a backing tube of the test specimen (4) or a liner tube (41) for simulating a backing tube during testing, to avoid compressive deformation of the backing tube or the liner tube (41).

The pipe inside support structure includes two pipe inside support blocks 6, a shaft 15 connecting the two pipe inside support blocks 6, and a nut 14. The shaft 15 and the nut 14 are used for adjusting the distance between the two pipe inner diameter supporting blocks 6, and therefore the situation that a liner pipe 41 of the liner pipe or a simulation liner pipe is extruded and deformed under the fixing action of the mounting block 8, the U-shaped bolt 7 and the tool platform 5 is avoided, and test distortion caused by extrusion deformation is avoided.

The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and shall be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (13)

1. A test method of a rotary target, the rotary target comprising a backing tube and a coating formed on the outer peripheral surface of the backing tube, the test method comprising:

sampling: intercepting a preset length of the rotary target material to obtain a sample (4) to be tested, wherein the sample (4) to be tested comprises a part of a backing pipe and a coating on the part of the backing pipe, or,

forming a coating on a liner tube (41) according to a preparation process of the coating of the rotary target material, thereby obtaining a test sample (4) to be tested, wherein the liner tube (41) is used for simulating a backing tube of the rotary target material;

preparing a sample: sticking a strip-shaped test plate (1) to the outer side surface coating of the test sample (4);

and (3) testing: the test specimen (4) with the elongated test plate (1) was fixed, and then a tensile force for separating the elongated test plate (1) from the test specimen (4) was applied to one end of the elongated test plate (1) to test the adhesive strength of the coating of the test specimen (4).

2. The test method according to claim 1, wherein in the sample preparation step, before the application of the strip-shaped test board (1) to the outer side surface coating of the test sample (4), further comprising:

the part of the coating (42) to be tested is separated from the rest of the coating on the outer side of the test specimen.

3. The method of testing according to claim 1, wherein in said sample preparation step, before adhering the strip-shaped test board to the outer side surface coating of the test sample, further comprising:

the outer side coating of the sample is divided into a plurality of portions, one for each sample coating (42).

4. The test method according to claim 2 or 3,

and cutting the outer side coating of the sample by grooving the coating.

5. The test method according to claim 1, characterized in that the test specimen (4) is cylindrical; in the sample preparation step, before the strip-shaped test board is pasted on the outer side surface coating of the sample, the method further comprises the following steps:

grooving at two ends of the sample along the cylindrical outer side surface of the sample to separate a part of coating to be tested from the coatings at two ends of the sample;

grooving is carried out on the cylindrical outer side coating of the sample along the length direction of the sample, and the cylindrical outer side coating of the sample is divided into a plurality of parts.

6. A test method according to claim 1, wherein in the sample preparation step, an elongated test board (1) is pasted to the outer side face coating of the test sample (4) by an adhesive; and the number of the first and second electrodes,

the fracture strength of the bonding agent is larger than that between the coating of the target material and the backing tube.

7. The method of testing according to claim 1, further comprising, prior to applying the strip test plate to the outer side coating of the test specimen: the coated (42) surface of the test piece and the working surface of the elongated test plate (1) were subjected to roughening treatment.

8. The method according to claim 1, wherein in the testing step, one end of the test specimen is fixed to a base of a universal tensile testing machine, and then the end of the elongated test plate corresponding to the other end of the test specimen is fastened to a tensile mechanism of the universal tensile testing machine.

9. A rotary target testing device, comprising:

-a base and-a fixture for fixing a specimen (4) produced in the rotary target testing method according to any of claims 1-8 to the base;

the test device comprises a strip-shaped test plate (1) and a stretching device, wherein the strip-shaped test plate (1) is used for being stuck on an outer side surface coating (42) of the test sample (4); the tensile device is used for applying a tensile force for separating the strip-shaped test plate (1) from the coating (42) of the sample to one end of the strip-shaped test plate (1) so as to test the adhesive force strength of the coating of the sample.

10. The testing device according to claim 9, further comprising a tooling platform (5), wherein the fixing device is arranged on the tooling platform (5) for fixing the test specimen (4) to the tooling platform (5); the tooling platform (5) is used for being fixed on the base.

11. The test apparatus of claim 10, wherein the tensile apparatus is a tensile mechanism of a universal tensile testing machine, and the base is a base of the universal tensile testing machine;

the testing device also comprises a connecting piece used for fixedly connecting one end of the strip-shaped testing plate (1) with a stretching mechanism of the universal tensile testing machine.

12. The testing device of claim 10, wherein the fixture comprises:

a U-shaped bolt (7) and a nut matched with the U-shaped bolt, wherein the U-shaped bolt (7) is used for fixing the first end of the sample (4), threads are arranged at two ends of the U-shaped bolt (7),

the mounting block (8) is used for fixing a second end of the test sample (4), the mounting block (8) is provided with a notch matched with the test sample (4), an avoiding opening (82) corresponding to the strip-shaped test plate (1) on the test sample (4) is formed in the edge of the notch (81), and threaded holes for mounting the screws are formed in two sides of the notch (81) of the mounting block (8) respectively;

the tool platform (5) is provided with first through holes corresponding to two ends of the U-shaped bolt (7), and the tool platform (5) is provided with second through holes corresponding to the threaded holes.

13. The test apparatus according to claim 11, wherein a fixing hole (101) is provided at an end of said elongated test plate (1) to which a tensile force is to be applied;

the connecting piece comprises a pull rod (2) and two bolts (3), one end of the pull rod (2) is used for being inserted into the fixing hole (101) of the strip-shaped test plate (1), and the other end of the pull rod is used for being clamped in a clamp (9) of the universal tensile testing machine; the two ends of the pull rod are respectively provided with a first plug hole (201), and the position of the strip-shaped test board (1) corresponding to the first plug hole (201) of the pull rod (2) accommodated in the fixing hole (101) is provided with a second plug hole (102); one of the two pins (3) is used for passing through a second pin hole (102) of the long strip-shaped test plate (1) and a first pin hole (201) of the first end of the pull rod (2) to fix the long strip-shaped test plate (1) and the first end of the pull rod (2), and the other of the two pins (3) passes through the first pin hole (201) of the second end of the pull rod (2) to be clamped on the clamp (9) during testing.

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