摘要
采用不同热处理工艺(热处理温度、热处理时间和冷却方式)对含镁铝新型建筑结构材料进行了热处理,并进行了电化学腐蚀试验。结果表明:在热处理时间4h时,随热处理温度从600℃升高至800℃或在热处理温度675℃时,热处理时间从2h延长至5h,材料的耐腐蚀性能均先提高后下降。在热处理时间4h时,675℃热处理比600℃热处理的腐蚀电位正移116mV、腐蚀电流密度减小56%;在热处理温度675℃时,4h热处理比2h热处理的腐蚀电位正移81mV、腐蚀电流密度减小41%;在热处理675℃×4h时,炉冷比水冷的腐蚀电位正移157mV、腐蚀电流密度减小50%。
The heat treatment of new building structural material containing magnesium and aluminum was carried out by using different heat treatment processes （heat treatment temperature, time and cooling mode）. And the electrochemical corrosion experiments were carried out. The results indicate that, when the heat treatment time is 4 h, with increase of heat treatment temperature from 600 ℃ to 800 ℃, or when the heat treatment temperature is 675 ℃, and with the prolongation of heat treatment time from 2 h to 5 h, the corrosion resistance of the material firstly increases and then decreases. When the heat treatment time is 4 h, compared with heat treatment at 600℃, the corrosion potential positive shift is 116 mV and the corrosion current density decreases by 56% when heat treatment temperature is 675℃ ; when the heat treatment temperature is 675℃, compared with the heat treatment time of 2 h, corrosion potential positive shift for heat treatment time of 4 h is 81 mV, and the corrosion current density decreases by 39%; when the heat treatment is 675 ℃ ×4 h, compared with water cooling, the positive shift of corrosion potential is 157 mV, and the corrosion current density decreases by 50% under the furnace cooling.
出处
《热加工工艺》
CSCD
北大核心
2017年第18期242-245,共4页
Hot Working Technology
基金
江苏省高等教育教改重点课题(200940)
关键词
热处理工艺
冷却方式
耐腐蚀性能
新型建筑结构材料
heat treatment process
cooling mode
corrosion resistance
new building structural materials
