YY/T 0988.15-2016Coatings of surgical implants - Part 15: Test method for abrasion resistance testing of metallic thermal spray coatings (English PDF)

Foreword

YY/T 0988 "Surgical Implant Coating" is divided into the following sections.

- Part 1. cobalt - 28 chromium - 6 molybdenum powder;

- Part 2. Titanium and titanium - 6 - 4 - vanadium alloy powders;

- Part 3 to Part 10. (reserved);

- Part 11. Test methods for tensile test of calcium phosphate coating and metal coating;

Part 12. Test methods for calcium phosphate coating and metal coating shear test;

- Part 13. Test methods for shear and bending fatigue of calcium phosphate, metal and calcium phosphate/metal composite coatings;

- Part 14. Method for evaluation of porous coating bodies;

Part 15. Test method for abrasion resistance of metallic thermal sprayed coatings. This section is part 15 of YY/T 0988.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part uses the re-drafting method to refer to ASTM F1978-2007 "Taber abrasion method to test the metal thermal spray coating wear resistance" prepared by.

The technical differences between this section and ASTM F1978-2007 are as follows.

- delete chapters 2, 11 and 12 of ASTM F1978-2007;

--- change Appendix X1 to Appendix A, the same;

--- Remove the contents associated with the burner brand.

1 Scope

YY/T 0988 This part is used to quantify the wear resistance of the metal coating on the metal plane by the thermal spray method. This part of the purpose To provide a method of characterization for the coating of surgical implants.

This part of the wear instrument produced by the rolling and friction of the mixing effect of the coating surface wear. Wear through cumulative mass loss Line quantification.

This test method is only used for flat rigid specimens. The sample does not react significantly with water and does not send air between room temperature and 100 ° C Phase transformation and chemical reaction.

This section does not attempt to address all the security issues involved, even those related to their use. Indeed It is the responsibility of this part of the user to establish appropriate safety and health practices, as well as the applicability of regulatory restrictions before application.

2 Terms and definitions

The following terms and definitions apply to this document.

3 Test method

This part uses a wear instrument equipped with H-22 grinding wheel and 250g without weight grinding head. Repeated friction test samples, a series of weeks after the use of super Sound waves for cleaning. The sample is weighed after each cleaning, and the mass loss is the amount of wear.

4 Meaning and application

4.1 This part provides an evaluation method for the anti-particle shedding ability of thermal spray coating. Particle shedding may occur during surgical implantation It may also be caused by micro-implantation after implantation.

4.2 This method can be used for coating quality control analysis, can be used to assess the impact of process parameters, such as pre-spray preparation, surface structure,