腐蚀试验：试样表面粗糙度的要求（举例）
2025-12-08 16:53:16
作者：考拉腐蚀 来源：考拉腐蚀
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【1】JB/T 7901-2023 金属材料实验室均匀腐蚀全浸试验方法4.2.5 试样最终表面应符合GB/T 2481.1规定的粒度不粗于F120的水砂纸进行研磨。【2】GB/T 4334-2020 金属和合金的腐蚀 奥氏体及铁素体-奥氏体（双相）不锈钢晶间腐蚀试验方法方法A试样被检查的表面应抛光；方法B、C、E、F、G试样切取及表面磨制过程应防止表面过热，加工后试样表面粗糙度Ra一般不大于0.8μm。【3】HG/T 3523-2008 冷却水化学处理标准腐蚀试片技术条件
Final surface treatment of the specimens should include finishing with No.120 abrasive paper or cloth or the equivalent, unless the surface is to be used in the mill-finished condition. Wet grinding should be used on alloys thar work harden readily, such as austenitic stainless steels.
【5】GB/T 10125-2021 人造气氛腐蚀试验 盐雾试验参比试样尺寸为150mmx70mm，表面应无缺陷，即无孔隙、划痕及氧化色（Ra=0.8μm±0.3μm）。【6】GB/T 15748-2013 船用金属材料电偶腐蚀腐蚀试验方法试样用机械加工方法制备，表面粗糙度按照GB/T 1031,Ra最大允许值为3.2μm。【GB/T 1031 产品集合技术规范（GPS）表面结构 轮廓法 表面粗糙度参数及其数值】
【7】GB/T 17899-2023 金属和合金的腐蚀 不锈钢在氯化钠溶液中点蚀电位的动电位测量方法试样的制备：试样的最终研磨可以是干磨或湿磨。在测试前，建议用600目（粒度10μm~14μm）的砂纸研磨试样。【旧版本标准GB/T 17899-1999 不锈钢点蚀电位测量方法中，试验面用符合GB/T 2481.1规定粒度的砂纸按顺序进行研磨，一直磨到粒度为W20的砂纸。研磨时要注意避免试样发热。在测试前，用符合GB/T 2481.1规定的粒度为W28号的砂纸对试验面进行仔细打磨】【8】ASTM G28 Standard Test Methods for Detecting Susceptibility to intergranular corrosion in wrought, nickel-rich, chromium-bearing alloys6.4 All surfaces of the specimen, including edges, should be finished using wet No.80-grit or dry No.120-grit abrasive paper. If dry abrasive paper is used, polish slowly to avoid overheading. Sand blasting should not be used.【9】GB/T 4157-2017 金属在硫化氢环境中抗硫化物应力腐蚀开裂和应力腐蚀开裂的实验室试验方法
- A法拉伸试样，对所有材料，试验段的表面粗糙度Ra应不高于GB/T 1031规定的0.25μm。
- B法三点弯曲试验，试样最后的表面粗糙度Ra应不高于GB/T 1031规定的0.8μm。
- C法C环试验，试样加工后试样主表面的粗糙度Ra应不高于GB/T 1031规定的0.8μm。
- D法DCB试验，试样最后的表面粗糙度Ra应不高于GB/T 1031规定的0.8μm。
- E法四点弯曲试验，试样最后的表面粗糙度Ra应不高于GB/T 1031规定的0.8μm。
【10】GB/T 30074-2013 用电化学技术测量金属中氢渗透（吸收和迁移）的方法（ISO 17081:2004 MOD）6.2.4试样的氧化侧应机械研磨和抛光，获得可重现的光滑表面；充氢侧可用类似的方法处理，经供需双方协商，也可使用其他状态的表面。[注：在试样情况下，可用电化学抛光处理试样。]【11】ASTM G148-97（R2011）Standard Practice for evaluation of hydrogen uptake, permeation, and transpaort in metals by an electrochemical technique7.2.7 The oxidation side of the specimen shall be mechanically polished to a repetable finish. A 600 grit surface finish is recommended. The charging side may be similarly treated or used in condition similar to the service condition being modeled. Electropolishing of specimens may also be employed in aprrpopriate cases where surface machining is difficult and may produce excessive cold working damage. However, electropolishing may induce hydrogen into the metal and may require the use of a low temperature heat treatment ro reducen the amount of hydrogen in the metal prior to testing.【12】ISO 17801:2014 Method of measurement of hydorgen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique6.2.5 The oxidation side of the sample shall be mechanically ground or polished to a repeateble finish. The charging side may be similarly treated or used as for an intended service application. NOTE-Electropolishing of samples may also be employed in appropriate cases.【13】GB/T 34543.2-2018 氢气储存输送系统 第2部分：金属材料与氢环境相容性试验方法【14】ASTM G142-98（R2016）Standard test method for determination of susceptibility of metals to embrittlement in Hydrogen containing environments at high pressure, high temperature, or both
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