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Significance and Use
This test method provides a means to evaluate the resistance to particle shedding of a thermal spray coating. Such particle shedding might occur during surgical insertion of an implant or as the result of micromotion of the implant after insertion.
This abrasion test method may be useful for quality control analysis of a coating, and it can be used to evaluate the effects of processing variables, such as substrate preparation before coating, surface texture, coating technique variables, or postcoating treatments, any of which may influence the susceptibility of the coating to particle shedding.
This abrasion test method is for flat plate-shaped specimens of a size sufficient that the wheels of the abrader do not leave the surface of the specimen. It is not recommended, however, for devices with other shapes or sizes.
1.1 This test method quantifies the abrasion resistance of metallic coatings produced by thermal spray processes on flat metallic surfaces. It is intended as a means of characterizing coatings used on surgical implants.
1.2 This test uses the Taber Abraser, which generates a combination of rolling and rubbing to cause wear to the coating surface. Wear is quantified as cumulative mass loss.
1.3 This test method is limited to flat, rigid specimens that do not react significantly with water and do not undergo a phase transformation or chemical reaction between room temperature and 100°C in air.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicable regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
G195 Guide for Conducting Wear Tests Using a Rotary Platform, Double-Head Abraser
ICS Number Code 25.220.40 (Metallic coatings)
UNSPSC Code 42295500(Surgical implants and expanders and extenders and surgical wires and related products)