ASTM G32-16
使用振动装置的空隙腐蚀的标准试验方法
Standard Test Method for Cavitation Erosion Using Vibratory Apparatus
ASTM G32-16 发布历史
ASTM G32-16由美国材料与试验协会 US-ASTM 发布于 2016。
ASTM G32-16在国际标准分类中归属于: 77.060 金属的腐蚀。
ASTM G32-16 发布之时，引用了标准
- ASTM A276 不锈钢棒和形状的标准规格
- ASTM B160 镍条和镍棒标准规范
- ASTM B211 铝和铝合金轧制或冷加工棒材杆材金属丝标准规格(公制)
- ASTM D1193 试剂水(联邦试验方法No.7916)
- ASTM E177 进行室外噪声测量的测量方案的拟定用标准指南
- ASTM E691 为测定试验方法精密度开展的实验室间的研究
- ASTM E960 实验室玻璃烧杯的标准规格
- ASTM G117 使用实验室间磨损和浸蚀试验数据的精密度的计算与报告
- ASTM G119 确定磨损与腐蚀之间协同作用的标准指南
- ASTM G134 用气蚀喷液法测试固体材料腐蚀性的标准试验方法
- ASTM G40 有关侵蚀和磨损的标准术语
- ASTM G73 液体冲击冲蚀试验的标准实施规程
ASTM G32-16的历代版本如下：
- 2021年 ASTM G32-16(2021)e1 用振动装置测定气蚀的标准试验方法
- 2016年 ASTM G32-16 使用振动装置的空隙腐蚀的标准试验方法
- 2010年 ASTM G32-10 使用振动装置检测气蚀侵蚀的标准试验方法
- 2009年 ASTM G32-09 使用振动装置对气蚀侵蚀的试验方法
- 2006年 ASTM G32-06 使用振动装置对气泡浸蚀的标准试验方法
- 2003年 ASTM G32-03 使用振动装置对气蚀的试验方法
- 1998年 ASTM G32-98 使用振动装置对气蚀的试验方法
5.1 This test method may be used to estimate the relative resistance of materials to cavitation erosion as may be encountered, for instance, in pumps, hydraulic turbines, hydraulic dynamometers, valves, bearings, diesel engine cylinder liners, ship propellers, hydrofoils, and in internal flow passages with obstructions. An alternative method for similar purposes is Test Method G134, which employs a cavitating liquid jet to produce erosion on a stationary specimen. The latter may be more suitable for materials not readily formed into a precisely shaped specimen. The results of either, or any, cavitation erosion test should be used with caution; see 5.8.
5.2 Some investigators have also used this test method as a screening test for materials subjected to liquid impingement erosion as encountered, for instance, in low-pressure steam turbines and in aircraft, missiles or spacecraft flying through rainstorms. Test Method G73 describes another testing approach specifically intended for that type of environment.
5.3 This test method is not recommended for evaluating elastomeric or compliant coatings, some of which have been successfully used for protection against cavitation or liquid impingement of moderate intensity. This is because the compliance of the coating on the specimen may reduce the severity of the liquid cavitation induced by its vibratory motion. The result would not be representative of a field application, where the hydrodynamic generation of cavitation is independent of the coating.
Note 1: An alternative approach that uses the same basic apparatus, and is deemed suitable for compliant coatings, is the “stationary specimen” method. In that method, the specimen is fixed within the liquid container, and the vibrating tip of the horn is placed in close proximity to it. The cavitation “bubbles” induced by the horn (usually fitted with a highly resistant replaceable tip) act on the specimen. While several investigators have used this approach (see X4.2.3), they have differed with regard to standoff distances and other arrangements. The stationary specimen approach can also be used for brittle materials which can not be formed into a threaded specimen nor into a disc that can be cemented to a threaded specimen, as required for this test method (see 7.6).
5.4 This test method should not be directly used to rank materials for applications where electrochemical corrosion or solid particle impingement plays a major role. However, adaptations of the basic method and apparatus have been used for such purposes (see 9.2.5, 9.2.6, and X4.2). Guide G119 may be followed in order to determine the synergism between the mechanical and electrochemical effects.
5.5 Those who are engaged in basic research, or concerned with very specialized applications, may need to vary some of the test parameters to suit their purpose......
- 标准号
- ASTM G32-16
- 发布
- 2016年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM G32-16(2021)e1
- 当前最新
- ASTM G32-16(2021)e1
- 引用标准
- ASTM A276 ASTM B160 ASTM B211 ASTM D1193 ASTM E177 ASTM E691 ASTM E960 ASTM G117 ASTM G119 ASTM G134 ASTM G40 ASTM G73