热双金属材料特定表面均匀腐蚀全浸试验测量不确定度评定

Uncertainty Evaluation of Laboratory Immersion Test Method of Uniform Corrosion for a Specific Surface on Thermal Bimetallic Material

均匀腐蚀全浸试验是衡量金属腐蚀性能的重要依据,影响其腐蚀速率的因素较多,包括仪器的不确定度和测量重复性等。为了掌握试验数据的准确性,在室温5%硫酸溶液中对热双金属材料特定表面进行了24h均匀腐蚀全浸试验,对其腐蚀速率进行了不确定度评定,结果满意。

Uniform corrosion immersion test is an important basic to measure corrosion performacnce of metallic materials.There are many factors which affect the corrosion rate,such as instrumental uncertainty and measurement reproducibility.To grasp the accuracy of experimental data,uniform corrosion immersion test was carried out on a specific surface of thermal bimetallic material at room temperature in 5% sulphuric acid solution for 24 h.The uncertainty of the corrosion rate was evaluated with satisfactory results.