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金属外科植入材料的凹痕或裂隙腐蚀的标准试验方法  
 【英文标准名称】  Standard Test Method for Pitting or Crevice Corrosion of Metallic Surgical Implant Materials
 【原文标准名称】  金属外科植入材料的凹痕或裂隙腐蚀的标准试验方法
 【标准号】  ASTM F746-2004
 【标准状态】  Active
 【国别】  
 【发布日期】  2004
 【实施或试行日期】  
 【发布单位】  美国材料与试验协会(US-ASTM)
 【起草单位】  F04.15
 【标准类型】  (Test Method)
 【标准水平】  ()
 【中文主题词】  试验;侵蚀腐蚀;医学科学;裂纹;腐蚀;外科植入物;磨损;材料;金属;外科学;医疗设备
 【英文主题词】  crevice corrosion; passive metals; pitting corrosion; potentiostatic polarization measurements; surgical implant materials
 【摘要】  

This test method is designed solely for determining comparative laboratory indices of performance. The results may be used for ranking alloys in order of increasing resistance to pitting and crevice corrosion under the specific conditions of this method. It should be noted that the method is intentionally designed to reach conditions that are sufficiently severe to cause breakdown of at least one alloy (Type 316 L stainless steel) currently considered acceptable for surgical implant use, and that those alloys which suffer pitting or crevice corrosion during the more severe portions of the test do not necessarily suffer localized corrosion when placed within the human body as a surgical implant.

1.1 This test method covers the determination of resistance to either pitting or crevice corrosion of metals and alloys from which surgical implants will be produced. It is a modified version of an established test and is used as a screening test to rank surgical implant alloys in order of their resistance to localized corrosion.

1.2 This test method applies only to passive metals and alloys. Nonpassive alloys (other than noble alloys) are susceptible to general corrosion and are not normally suitable for implant use.

1.3 This test method is intended for use as a laboratory screening test of metals and alloys which undergo pitting or crevice corrosion, or both.

1.4 The values stated in SI units are to be regarded as the 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 applicability of regulatory limitations prior to use.

 【中国标准分类号】  C35
 【国际标准分类号】  11_040_40
 【页数】  6P.;A4
 【正文语种】  
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